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Note: This page contains sample records for the topic "thin-film solar cell" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

Modeling and control of thin film surface morphology: application to thin film solar cells  

E-Print Network (OSTI)

materials, thin film solar cell technology stands to benefitThin-film solar cells: Review of materials, technologies and

Huang, Jianqiao

2012-01-01T23:59:59.000Z

2

Plasmonic Thin-Film Solar Cells  

Science Journals Connector (OSTI)

A combined computational-experimental study optimizing plasmon-enhanced absorption in thin film solar cells presented. We investigate the effect of different geometries where...

Pala, Ragip; White, Justin; Brongersma, Mark

3

Nanoarrays for Light Management in Thin Film Solar Cells  

Science Journals Connector (OSTI)

We report the use of plasmonic and photonic nanoarray to achieve light management in thin film solar cells. Theoretical and experimental data will be presented.

Ji, Jin; Nasr, Magued B; McCutcheon, Murray W; Herring, Cy

4

Metal Nanoparticles Enhanced Optical Absorption in Thin Film Solar Cells  

Science Journals Connector (OSTI)

The plasmonic enhanced absorption for thin film solar cells with silver nanoparticles (NPs) deposited on top of the amorphous silicon film (a-Si:H) solar cells and embedded inside the...

Xie, Wanlu; Liu, Fang; Qu, Di; Xu, Qi; Huang, Yidong

5

A Review of Thin Film Silicon for Solar Cell Applications  

E-Print Network (OSTI)

A Review of Thin Film Silicon for Solar Cell Applications May 99 Contents 1 Introduction 3 2 Low 2.2.3 Deposition onto foreign substrates with the intention of improving crystallographic nature Field Cells . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 11

6

DISSERTATION DEVICE PHYSICS OF Cu(In,Ga)Se2 THIN-FILM SOLAR CELLS  

E-Print Network (OSTI)

DISSERTATION DEVICE PHYSICS OF Cu(In,Ga)Se2 THIN-FILM SOLAR CELLS Submitted by Markus Gloeckler PHYSICS OF Cu(In,Ga)Se2 THIN-FILM SOLAR CELLS BE ACCEPTED AS FULFILLING IN PART REQUIREMENTS OF Cu(In,Ga)Se2 THIN-FILM SOLAR CELLS Thin-film solar cells have the potential to be an important

Sites, James R.

7

Laser scribing of CIGS based thin films solar cells  

Science Journals Connector (OSTI)

Laser scribing tests on CIGS based thin films solar cells have been performed. The obtained high quality incisions show that laser scribing is a valuable tool for producing low-cost...

Sozzi, Michele; Menossi, Daniele; Bosio, Alessio; Cucinotta, Annamaria; Romeo, Nicola; Selleri, Stefano

8

Efficient light trapping structure in thin film silicon solar cells  

E-Print Network (OSTI)

Thin film silicon solar cells are believed to be promising candidates for continuing cost reduction in photovoltaic panels because silicon usage could be greatly reduced. Since silicon is an indirect bandgap semiconductor, ...

Sheng, Xing

9

Fully Solution-Processed Copper Chalcopyrite Thin Film Solar Cells: Materials Chemistry, Processing, and Device Physics  

E-Print Network (OSTI)

nanowire networks as window layers in thin film solar cells.window layer for fully solution-deposited thin filmITO) thin films by silver nanowire composite window layers

Chung, Choong-Heui

2012-01-01T23:59:59.000Z

10

Focused ion beam specimen preparation for electron holography of electrically biased thin film solar cells  

E-Print Network (OSTI)

, biased TEM specimen, thin film solar cell, FIB Thin films of hydrogenated Si (Si:H) can be used as active for electron holography of a thin film solar cell using conventional lift-out specimen preparation and a homeFocused ion beam specimen preparation for electron holography of electrically biased thin film

Dunin-Borkowski, Rafal E.

11

Mode Splitting for Efficient Plasmoinc Thin-film Solar Cell  

E-Print Network (OSTI)

We propose an efficient plasmonic structure consisting of metal strips and thin-film silicon for solar energy absorption. We numerically demonstrate the absorption enhancement in symmetrical structure based on the mode coupling between the localized plasmonic mode in Ag strip pair and the excited waveguide mode in silicon slab. Then we explore the method of symmetry-breaking to excite the dark modes that can further enhance the absorption ability. We compare our structure with bare thin-film Si solar cell, and results show that the integrated quantum efficiency is improved by nearly 90% in such thin geometry. It is a promising way for the solar cell.

Li, Tong; Jiang, Chun

2010-01-01T23:59:59.000Z

12

DISSERTATION ELECTRON-REFLECTOR STRATEGY FOR CdTe THIN-FILM SOLAR CELLS  

E-Print Network (OSTI)

DISSERTATION ELECTRON-REFLECTOR STRATEGY FOR CdTe THIN-FILM SOLAR CELLS Submitted by Kuo-Jui Hsiao ELECTRON- REFLECTOR STRATEGY FOR CdTe THIN-FILM SOLAR CELLS BE ACCEPTED AS FULFILLING IN PART REQUIREMENTS SOLAR CELLS The CdTe thin-film solar cell has a large absorption coefficient and high theoretical

Sites, James R.

13

Photon Management in Thin Film Solar Cells  

Science Journals Connector (OSTI)

We analyze the absorption enhancement in single and tandem solar-cells comprising nanostructures that increase the path of the photons inside the solar cell. For this purpose we...

Rockstuhl, Carsten; Fahr, Stephan; Paul, Thomas; Menzel, Christoph; Bittkau, Karsten; Beckers, Thomas; Carius, Reinhard; Lederer, Falk

14

Mechanics of thin-film transistors and solar cells on flexible substrates Helena Gleskova*  

E-Print Network (OSTI)

1 Mechanics of thin-film transistors and solar cells on flexible substrates Helena Gleskova* , I be minimized throughout the fabrication process. Amorphous silicon thin-film transistors and solar cells, thin-film transistor, solar cell, flexible electronics Phone: (609) 258-4626, Fax: (609) 258-3585, E

15

Plasmonic enhancement of thin-film solar cells using gold-black C.J. Fredricksena  

E-Print Network (OSTI)

Plasmonic enhancement of thin-film solar cells using gold-black coatings C.J. Fredricksena , D. R thin-film amorphous-silicon solar cells enhance the short-circuit current by 20% over a broad spectrum and locally enhance the field strength. Keywords: plasmonics, thin-film, solar cell, metallic nanoparticles

Peale, Robert E.

16

Optimization of the absorption efficiency of an amorphous-silicon thin-film tandem solar cell  

E-Print Network (OSTI)

Optimization of the absorption efficiency of an amorphous-silicon thin-film tandem solar cell-wave approach was used to compute the plane-wave absorptance of a thin-film tandem solar cell with a metallic­4]. In this context, a basic idea is to periodically texture the metallic back reflector of a thin-film solar cell

17

Metal-black scattering centers to enhance light harvesting by thin-film solar cells  

E-Print Network (OSTI)

Metal-black scattering centers to enhance light harvesting by thin-film solar cells Deep Panjwania as scattering centers to increase the effective optical thickness of thin-film solar cells. The particular type. Gold-black was deposited on commercial thin-film solar cells using a thermal evaporator in nitrogen

Peale, Robert E.

18

Trend Detection on Thin-Film Solar Cell Technology Using Cluster Analysis and Modified Data Crystallization  

Science Journals Connector (OSTI)

Thin-film solar cell, one of green energies, is growing ... . To detect the potential trends of this technology is essential for companies and relevant industries ... patterns, the potential trends of thin-film solar

Tzu-Fu Chiu; Chao-Fu Hong; Yu-Ting Chiu

2010-01-01T23:59:59.000Z

19

Accounting for Localized Defects in the Optoelectronic Design of Thin-Film Solar Cells  

E-Print Network (OSTI)

Thin-film silicon solar cell technology," Progress insolar cells: modeling, materials and device technology.technologies competitive with traditional wafer based solar cells,

Deceglie, Michael G.

2014-01-01T23:59:59.000Z

20

EARTH ABUNDANT MATERIALS FOR HIGH EFFICIENCY HETEROJUNCTION THIN FILM SOLAR CELLS  

E-Print Network (OSTI)

EARTH ABUNDANT MATERIALS FOR HIGH EFFICIENCY HETEROJUNCTION THIN FILM SOLAR CELLS Yun Seog Lee 1; * Corresponding author: buonassisi@mit.edu; ABSTRACT We investigate earth abundant materials for thin- film solar cuprous oxide (Cu2O) as a prototype candidate for investigation as an absorber layer in thin film solar

Ceder, Gerbrand

Note: This page contains sample records for the topic "thin-film solar cell" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

LBIC ANALYSIS OF THIN-FILM POLYCRYSTALLINE SOLAR CELLS James R. Sites and Timothy J. Nagle  

E-Print Network (OSTI)

LBIC ANALYSIS OF THIN-FILM POLYCRYSTALLINE SOLAR CELLS James R. Sites and Timothy J. Nagle Physics response map, was developed and used to map defects in thin-film solar cells [4]. Improvements to the two) measurements are providing a direct link between the spatial non-uniformities inherent in thin-film

Sites, James R.

22

High efficiency thin film silicon solar cells with novel light trapping : principle, design and processing  

E-Print Network (OSTI)

One major efficiency limiting factor in thin film solar cells is weak absorption of long wavelength photons due to the limited optical path length imposed by the thin film thickness. This is especially severe in Si because ...

Zeng, Lirong, Ph. D. Massachusetts Institute of Technology

2008-01-01T23:59:59.000Z

23

Junction Evolution During Fabrication of CdS/CdTe Thin-film PV Solar Cells (Presentation)  

SciTech Connect

Discussion of the formation of CdTe thin-film PV junctions and optimization of CdTe thin-film PV solar cells.

Gessert, T. A.

2010-09-01T23:59:59.000Z

24

Configuration Optimization of a Nanosphere Array on Top of a Thin Film Solar Cell  

E-Print Network (OSTI)

Configuration Optimization of a Nanosphere Array on Top of a Thin Film Solar Cell J. Grandidier on top of a solar cell can enhance light absorption and therefore increase its efficiency. Freely photocurrent of the solar cell. On a typical thin film amorphous silicon solar cell, a parametric analysis

Atwater, Harry

25

Thin film solar cell including a spatially modulated intrinsic layer  

DOE Patents (OSTI)

One or more thin film solar cells in which the intrinsic layer of substantially amorphous semiconductor alloy material thereof includes at least a first band gap portion and a narrower band gap portion. The band gap of the intrinsic layer is spatially graded through a portion of the bulk thickness, said graded portion including a region removed from the intrinsic layer-dopant layer interfaces. The band gap of the intrinsic layer is always less than the band gap of the doped layers. The gradation of the intrinsic layer is effected such that the open circuit voltage and/or the fill factor of the one or plural solar cell structure is enhanced.

Guha, Subhendu (Troy, MI); Yang, Chi-Chung (Troy, MI); Ovshinsky, Stanford R. (Bloomfield Hills, MI)

1989-03-28T23:59:59.000Z

26

INCREASED CELL EFFICIENCY IN InGaAs THIN FILM SOLAR CELLS WITH DIELECTRIC AND METAL BACK REFLECTORS  

E-Print Network (OSTI)

INCREASED CELL EFFICIENCY IN InGaAs THIN FILM SOLAR CELLS WITH DIELECTRIC AND METAL BACK REFLECTORS solar cells using back reflectors. We studied absorption enhancement in InGaAs and InGaAsP thin film and metal, on InGaAs thin film solar cell performance by device modeling and nu- merical simulations. DEVICE

Atwater, Harry

27

Technological assessment of light-trapping technology for thin-film Si solar cell.  

E-Print Network (OSTI)

??The proposed light trapping technology of Distributed Bragg Reflector (DBR) with Diffraction Grating (DG) and Anti-Reflection Coating (ARC) for thin film Si solar cell was… (more)

Susantyoko, Rahmat Agung

2009-01-01T23:59:59.000Z

28

Using Localized Plasmon Resonances to Enhance Absorption Efficiency in Thin-film Organic Solar Cells  

Science Journals Connector (OSTI)

We propose the use of localized surface plasmon modes excited by square metallic gratings to enhance the optical absorption of thin-film organic solar cells. Broadband absorption...

Le, Khai Q; Abass, Aimi; Maes, Bjorn; Bienstman, Peter; Alu, Andrea

29

Dielectric back scattering patterns for light trapping in thin-film Si solar cells  

E-Print Network (OSTI)

Dielectric back scattering patterns for light trapping in thin-film Si solar cells M. van Lare,1 of dielectric and metallic backscattering patterns in thin-film a-Si:H solar cells. We compare devices. Zhu, C.-M. Hsu, Z. Yu, S. Fan, and Y. Cui, "Nanodome solar cells with efficient light management

Polman, Albert

30

Extended light scattering model incorporating coherence for thin-film silicon solar cells  

E-Print Network (OSTI)

Extended light scattering model incorporating coherence for thin-film silicon solar cells Thomas film solar cells. The model integrates coherent light propagation in thin layers with a direct, non potential for light trapping in textured thin film silicon solar cells. VC 2011 American Institute

Lenstra, Arjen K.

31

Enhanced quantum efficiency of amorphous silicon thin film solar cells with the inclusion of a rear-reflector thin film  

SciTech Connect

We investigated the growth mechanism of amorphous silicon thin films by implementing hot-wire chemical vapor deposition and fabricated thin film solar cell devices. The fabricated cells showed efficiencies of 7.5 and 8.6% for the samples without and with the rear-reflector decomposed by sputtering, respectively. The rear-reflector enhances the quantum efficiency in the infrared spectral region from 550 to 750?nm. The more stable quantum efficiency of the sample with the inclusion of a rear-reflector than the sample without the rear-reflector due to the bias effect is related to the enhancement of the short circuit current.

Park, Seungil [Department of Mechanical Engineering, Chonbuk National University, Jeonju 561-756 (Korea, Republic of); Energy Conversions Technology Center, Korea Institute of Industrial Technology, Cheonan 331-825 (Korea, Republic of); Yong Ji, Hyung; Jun Kim, Myeong; Hyeon Peck, Jong [Energy Conversions Technology Center, Korea Institute of Industrial Technology, Cheonan 331-825 (Korea, Republic of); Kim, Keunjoo, E-mail: kimk@chonbuk.ac.kr [Department of Mechanical Engineering, Chonbuk National University, Jeonju 561-756 (Korea, Republic of)

2014-02-17T23:59:59.000Z

32

Universality of non-Ohmic shunt leakage in thin-film solar cells S. Dongaonkar,1,a  

E-Print Network (OSTI)

Universality of non-Ohmic shunt leakage in thin-film solar cells S. Dongaonkar,1,a J. D. Servaites thin-film solar cell types: hydrogenated amorphous silicon a-Si:H p-i-n cells, organic bulk understanding of thin film solar cell device physics, including important module performance variability issues

Alam, Muhammad A.

33

Comparison of Ag and SiO2 Nanoparticles for Light Trapping Applications in Silicon Thin Film Solar Cells  

Science Journals Connector (OSTI)

Comparison of Ag and SiO2 Nanoparticles for Light Trapping Applications in Silicon Thin Film Solar Cells ... † Department

Martin Theuring; Peng Hui Wang; Martin Vehse; Volker Steenhoff; Karsten von Maydell; Carsten Agert; Alexandre G. Brolo

2014-09-10T23:59:59.000Z

34

Impurity and back contact effects on CdTe/CdS thin film solar cells.  

E-Print Network (OSTI)

??CdTe/CdS thin film solar cells are the most promising cost-effective solar cells. The goal of this project is to improve the performance for CdS/CdTe devices… (more)

Zhao, Hehong

2008-01-01T23:59:59.000Z

35

Diffusion of indium and gallium in Cu(In,Ga)Se2 thin film solar cells  

E-Print Network (OSTI)

Diffusion of indium and gallium in Cu(In,Ga)Se2 thin film solar cells O. Lundberga,*, J. Lua , A. Rockettb , M. Edoffa , L. Stolta a A°ngstro¨m Solar Center, Uppsala University, P.O. Box 534, SE-751 21 Abstract The diffusion of indium and gallium in polycrystalline thin film Cu(In,Ga)Se2 layers has been

Rockett, Angus

36

THE PERFORMANCE OF THIN FILM SOLAR CELLS EMPLOYING PHOTOVOLTAIC Cu22014x Te-CdTe HETEROJUNCTIONS (1)  

E-Print Network (OSTI)

195 THE PERFORMANCE OF THIN FILM SOLAR CELLS EMPLOYING PHOTOVOLTAIC Cu22014x Te This paper is a short status report on the continuing development of Cu22014xTe-CdTe thin film solar cells Company has had a conti- nuous effort on thin film solar cells for the past four and a half years

Paris-Sud XI, Université de

37

Hole-conductor-free perovskite organic lead iodide heterojunction thin-film solar cells: High efficiency and junction property  

E-Print Network (OSTI)

Hole-conductor-free perovskite organic lead iodide heterojunction thin-film solar cells: High-conductor-free organic lead iodide thin film solar cells have been fabricated with a sequential deposition method are comparable to that of the high-efficiency thin-film solar cells. VC 2014 AIP Publishing LLC. [http

Wang, Wei Hua

38

Enhancement of optical absorption in thin-film organic solar cells through the excitation of plasmonic modes in metallic gratings  

E-Print Network (OSTI)

Enhancement of optical absorption in thin-film organic solar cells through the excitation 2010 We theoretically investigate the enhancement of optical absorption in thin-film organic solar.1063/1.3377791 Thin-film organic solar cells OSCs are a promising candidate for low-cost energy conversion.1­6 However

Veronis, Georgios

39

HIGH EFFICIENCY CdTe/CdS THIN FILM SOLAR CELLS WITH A NOVEL BACK-CONTACT Nicola Romeoa  

E-Print Network (OSTI)

HIGH EFFICIENCY CdTe/CdS THIN FILM SOLAR CELLS WITH A NOVEL BACK-CONTACT Nicola Romeoa , Alessio in the fabrication of high efficiency CdTe/CdS thin film solar cells. Usually, it is done first by etching the Cd: Back Contact, CdTe, Thin Film 1 INTRODUCTION The back contact in the CdTe/CdS thin film solar cell

Romeo, Alessandro

40

Plasmonic Back Structures Designed for Efficiency Enhancement of Thin Film Solar Cells  

Science Journals Connector (OSTI)

Metallic back structures with one-dimensional periodic nanoridges attached to thin-film amorphous silicon (a-Si) solar cell are proposed to enhance the cell efficiency in a wide...

Bai, Wenli; Gan, Qiaoqiang; Bartoli, Filbert; Song, Guofeng

Note: This page contains sample records for the topic "thin-film solar cell" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Thin Film Solar Cells with Light Trapping Transparent Conducting Oxide Layer  

E-Print Network (OSTI)

Thin film solar cells, if film thickness is thinner than the optical absorption length, typically give lower cell performance. For the thinner structure, electric current loss due to light penetration can offset the electric current gain obtained...

Lu, Tianlin

2012-07-16T23:59:59.000Z

42

Design of plasmonic back structures for efficiency enhancement of thin-film amorphous Si solar cells  

Science Journals Connector (OSTI)

Metallic back structures with one-dimensional periodic nanoridges attached to a thin-film amorphous Si (a-Si) solar cell are numerically studied. At the interfaces between a-Si and...

Bai, Wenli; Gan, Qiaoqiang; Bartoli, Filbert; Zhang, Jing; Cai, Likang; Huang, Yidong; Song, Guofeng

2009-01-01T23:59:59.000Z

43

Nanoscale Materials for Thin Film Cu(In,Ga)Se2 Solar Cells  

Science Journals Connector (OSTI)

Cu(In,Ga)Se2 solar cells show the highest efficiencies of all thin film technologies. Nano-particulate precursor materials could have the potential to lead this technology to...

Ahlswede, Erik

44

Electron-reflector strategy for CdTe thin-film solar cells.  

E-Print Network (OSTI)

??The CdTe thin-film solar cell has a large absorption coefficient and high theoretical efficiency. Moreover, large-area photovoltaic panels can be economically fabricated. These features potentially… (more)

Hsiao, Kuo-Jui

2010-01-01T23:59:59.000Z

45

Earth-Abundant Materials for High-Efficiency Heterojunction Thin Film Solar Cells  

Science Journals Connector (OSTI)

We investigate materials for thin film solar cells that can meet tens of terawatts level deployment potential. As one of the candidates, cuprous oxide (Cu2O) is synthesized and...

Lee, Yun Seog; Bertoni, Mariana; Buonassisi, Tonio

46

Polycrystalline silicon thin-film solar cells on glass by ion-assisted deposition.  

E-Print Network (OSTI)

??Polycrystalline silicon (pc-Si, grain size > 1??m, no amorphous tissue) on glass is an interesting material for thin-film solar cells due to the low costs,… (more)

Straub, Axel

2005-01-01T23:59:59.000Z

47

Technological assessment of light-trapping technology for thin-film Si solar cell  

E-Print Network (OSTI)

The proposed light trapping technology of Distributed Bragg Reflector (DBR) with Diffraction Grating (DG) and Anti-Reflection Coating (ARC) for thin film Si solar cell was analyzed from the technology, market, and ...

Susantyoko, Rahmat Agung

2009-01-01T23:59:59.000Z

48

Integrated photonic structures for light trapping in thin-film Si solar cells  

E-Print Network (OSTI)

We explore the mechanisms for an efficient light trapping structure for thin-film silicon solar cells. The design combines a distributed Bragg reflector (DBR) and periodic gratings. Using photonic band theories and numerical ...

Sheng, Xing

49

CARRIER COLLECTION IN THIN-FILM CDTE SOLAR CELLS: THEORY AND EXPERIMENT  

E-Print Network (OSTI)

-n junction solar cell theory predicts that the total solar cell current in the light, JLCARRIER COLLECTION IN THIN-FILM CDTE SOLAR CELLS: THEORY AND EXPERIMENT A.E. Delahoy, Z. Cheng and K.K. Chin Department of Physics, Apollo Solar Energy Research Center, New Jersey Institute

50

1. INTRODUCTION Polycrystalline CdTe thin films solar cells have shown long  

E-Print Network (OSTI)

to the solar panel that can be adapted to any kind of shape and is easy to deploy in space. We have developed1. INTRODUCTION Polycrystalline CdTe thin films solar cells have shown long term stable performance for the solar cell, therefore high specific power (ratio of out- put power to the weight) solar cells

Romeo, Alessandro

51

Enhanced Efficiency of Light-Trapping Nanoantenna Arrays for Thin Film Solar Cells  

E-Print Network (OSTI)

We suggest a novel concept of efficient light-trapping structures for thin-film solar cells based on arrays of planar nanoantennas operating far from plasmonic resonances. The operation principle of our structures relies on the excitation of chessboard-like collective modes of the nanoantenna arrays with the field localized between the neighboring metal elements. We demonstrated theoretically substantial enhancement of solar-cell short-circuit current by the designed light-trapping structure in the whole spectrum range of the solar-cell operation compared to conventional structures employing anti-reflecting coating. Our approach provides a general background for a design of different types of efficient broadband light-trapping structures for thin-film solar-cell technologically compatible with large-area thin-film fabrication techniques.

Simovski, Constantin R; Voroshilov, Pavel M; Guzhva, Michael E; Belov, Pavel A; Kivshar, Yuri S

2013-01-01T23:59:59.000Z

52

DISSERTATION ANALYSIS OF IMPACT OF NON-UNIFORMITIES ON THIN-FILM SOLAR CELLS  

E-Print Network (OSTI)

-scale problems such as energy demand, pollution, and environment safety. The cost ($/kWh) is the primaryDISSERTATION ANALYSIS OF IMPACT OF NON-UNIFORMITIES ON THIN-FILM SOLAR CELLS AND MODULES WITH 2-D-FILM SOLAR CELLS AND MODULES WITH 2-D SIMULATIONS BE ACCEPTED AS FULFILLING IN PART REQUIREMENTS

Sites, James R.

53

Transfer Printing Methods for Flexible Thin Film Solar Cells: Basic Concepts and Working Principles  

Science Journals Connector (OSTI)

Thin film solar cells (TFSCs) that are fabricated on flexible substrates, such as plastics, paper, and fabrics, will significantly broaden the applications of solar cells, ranging from wearable solar chargers for portable electronics, building-integrated photovoltaics on sidewalls and curved rooftops, to lightweight solar cells for aerospace and space applications. ... Our study shows that photovoltaic tiles can combine energy generation with architectural aesthetics leading to significant implications for advancement in building integrated photovoltaics. ...

Chi Hwan Lee; Dong Rip Kim; Xiaolin Zheng

2014-09-03T23:59:59.000Z

54

NREL Produces Highly Efficient, Wide-Bandgap, Thin-Film Solar Cells (Fact Sheet)  

SciTech Connect

Researchers at the National Renewable Energy Laboratory (NREL) are finding new ways to manufacture thin-film solar cells made from copper, indium, gallium, and selenium - called CIGS cells - that are different than conventional CIGS solar cells. Their use of high-temperature glass, designed by SCHOTT AG, allows higher fabrication temperatures, opening the door to new CIGS solar cells employing light-absorbing materials with wide 'bandgaps.'

Not Available

2012-09-01T23:59:59.000Z

55

STRUCTURAL AND CHEMICAL STUDIES ON CdTe/CdS THIN FILM SOLAR CELLS WITH ANALYTICAL TRANSMISSION ELECTRON MICROSCOPY  

E-Print Network (OSTI)

STRUCTURAL AND CHEMICAL STUDIES ON CdTe/CdS THIN FILM SOLAR CELLS WITH ANALYTICAL TRANSMISSION, A. N. Tiwari Thin Film Physics Group, Laboratory for Solid State Physics, Technopark ETH-Building, Technoparkstr. 1, CH-8005 Zurich, Switzerland ABSTRACT: CdTe/CdS thin £lm solar cells have been grown by closed

Romeo, Alessandro

56

Structural and chemical investigations of CBD-and PVD-CdS buffer layers and interfaces in Cu(In,Ga)Se2-based thin film solar cells  

E-Print Network (OSTI)

(In,Ga)Se2-based thin film solar cells D. Abou-Rasa,b,*, G. Kostorza , A. Romeob,1 , D. Rudmannb , A Available online 8 December 2004 Abstract It is known that high-efficiency thin film solar cells based on Cu; Chemical bath deposition; CdS buffer 1. Introduction The highest efficiencies for thin film solar cells

Romeo, Alessandro

57

Parallel FDTD Simulation of Photonic Crystals and Thin-Film Solar Cells  

Science Journals Connector (OSTI)

Finite difference time domain (FDTD) method is a robust and accurate algorithm which is widely used in computational electromagnetic field and the simulation of optical phenomenon. In this paper, parallel FDTD based on overlapped domain decomposition ... Keywords: finite difference time domain method, parallel, photonic crystal, thin-film solar cell, quantum efficiency

Wu Wang; Xuebin Chi; Yangde Feng; Yonghua Zhao

2012-12-01T23:59:59.000Z

58

Disorder improves nanophotonic light trapping in thin-film solar cells  

SciTech Connect

We present a systematic experimental study on the impact of disorder in advanced nanophotonic light-trapping concepts of thin-film solar cells. Thin-film solar cells made of hydrogenated amorphous silicon were prepared on imprint-textured glass superstrates. For periodically textured superstrates of periods below 500?nm, the nanophotonic light-trapping effect is already superior to state-of-the-art randomly textured front contacts. The nanophotonic light-trapping effect can be associated to light coupling to leaky waveguide modes causing resonances in the external quantum efficiency of only a few nanometer widths for wavelengths longer than 500?nm. With increasing disorder of the nanotextured front contact, these resonances broaden and their relative altitude decreases. Moreover, overall the external quantum efficiency, i.e., the light-trapping effect, increases incrementally with increasing disorder. Thereby, our study is a systematic experimental proof that disorder is conceptually an advantage for nanophotonic light-trapping concepts employing grating couplers in thin-film solar cells. The result is relevant for the large field of research on nanophotonic light trapping in thin-film solar cells which currently investigates and prototypes a number of new concepts including disordered periodic and quasi periodic textures.

Paetzold, U. W., E-mail: u.paetzold@fz-juelich.de; Smeets, M.; Meier, M.; Bittkau, K.; Merdzhanova, T.; Smirnov, V.; Carius, R.; Rau, U. [IEK5—Photovoltaik, Forschungszentrum Jülich GmbH, 52425 Jülich (Germany); Michaelis, D.; Waechter, C. [Fraunhofer Institut für Angewandte Optik und Feinmechanik, Albert Einstein Str. 7, D-07745 Jena (Germany)

2014-03-31T23:59:59.000Z

59

Novel wide band gap materials for highly efficient thin film tandem solar cells  

SciTech Connect

Tandem solar cells (TSCs), which use two or more materials to absorb sunlight, have achieved power conversion efficiencies of >25% versus 11-20% for commercialized single junction solar cell modules. The key to widespread commercialization of TSCs is to develop the wide-band, top solar cell that is both cheap to fabricate and has a high open-circuit voltage (i.e. >1V). Previous work in TSCs has generally focused on using expensive processing techniques with slow growth rates resulting in costs that are two orders of magnitude too expensive to be used in conventional solar cell modules. The objective of the PLANT PV proposal was to investigate the feasibility of using Ag(In,Ga)Se2 (AIGS) as the wide-bandgap absorber in the top cell of a thin film tandem solar cell (TSC). Despite being studied by very few in the solar community, AIGS solar cells have achieved one of the highest open-circuit voltages within the chalcogenide material family with a Voc of 949mV when grown with an expensive processing technique (i.e. Molecular Beam Epitaxy). PLANT PV�s goal in Phase I of the DOE SBIR was to 1) develop the chemistry to grow AIGS thin films via solution processing techniques to reduce costs and 2) fabricate new device architectures with high open-circuit voltage to produce full tandem solar cells in Phase II. PLANT PV attempted to translate solution processing chemistries that were successful in producing >12% efficient Cu(In,Ga)Se2 solar cells by replacing copper compounds with silver. The main thrust of the research was to determine if it was possible to make high quality AIGS thin films using solution processing and to fully characterize the materials properties. PLANT PV developed several different types of silver compounds in an attempt to fabricate high quality thin films from solution. We found that silver compounds that were similar to the copper based system did not result in high quality thin films. PLANT PV was able to deposit AIGS thin films using a mixture of solution and physical vapor deposition processing, but these films lacked the p-type doping levels that are required to make decent solar cells. Over the course of the project PLANT PV was able to fabricate efficient CIGS solar cells (8.7%) but could not achieve equivalent performance using AIGS. During the nine-month grant PLANT PV set up a variety of thin film characterization tools (e.g. drive-level capacitance profiling) at the Molecular Foundry, a Department of Energy User Facility, that are now available to both industrial and academic researchers via the grant process. PLANT PV was also able to develop the back end processing of thin film solar cells at Lawrence Berkeley National Labs to achieve 8.7% efficient CIGS solar cells. This processing development will be applied to other types of thin film PV cells at the Lawrence Berkeley National Labs. While PLANT PV was able to study AIGS film growth and optoelectronic properties we concluded that AIGS produced using these methods would have a limited efficiency and would not be commercially feasible. PLANT PV did not apply for the Phase II of this grant.

Brian E. Hardin, Stephen T. Connor, Craig H. Peters

2012-06-11T23:59:59.000Z

60

Modeling and control of thin film surface morphology: application to thin film solar cells  

E-Print Network (OSTI)

Conference on Photovoltaic Energy Conversion. Conference17th European Photovoltaic Solar Energy Conference, 0:11,

Huang, Jianqiao

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "thin-film solar cell" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Holographic Thin Film System for Multijunction Solar Cells  

Science Journals Connector (OSTI)

The efficiency of photovoltaic generators based on different semiconductor materials with optimized band gaps can achieve considerably higher values than those obtained with single junction solar cells. For th...

W. H. Bloss; M. Griesinger; E. R. Reinhardt

1983-01-01T23:59:59.000Z

62

The Roles of Cu Impurity States in CdTe Thin Film Solar Cells Ken K. Chin1  

E-Print Network (OSTI)

1 The Roles of Cu Impurity States in CdTe Thin Film Solar Cells Ken K. Chin1 , T.A. Gessert2 of Cu impurity inclusion in CdTe thin film solar cells, such as degradation caused by Cu diffusion , and Su-Huai Wei2 1 Department of Physics and Apollo CdTe Solar Energy Research Center, NJIT, Newark, NJ

63

Angular behavior of the absorption limit in thin film silicon solar cells  

E-Print Network (OSTI)

We investigate the angular behavior of the upper bound of absorption provided by the guided modes in thin film solar cells. We show that the 4n^2 limit can be potentially exceeded in a wide angular and wavelength range using two-dimensional periodic thin film structures. Two models are used to estimate the absorption enhancement; in the first one, we apply the periodicity condition along the thickness of the thin film structure but in the second one, we consider imperfect confinement of the wave to the device. To extract the guided modes, we use an automatized procedure which is established in this work. Through examples, we show that from the optical point of view, thin film structures have a high potential to be improved by changing their shape. Also, we discuss the nature of different optical resonances which can be potentially used to enhance light trapping in the solar cell. We investigate the two different polarization directions for one-dimensional gratings and we show that the transverse magnetic pola...

Naqavi, Ali; Söderström, Karin; Battaglia, Corsin; Paeder, Vincent; Scharf, Toralf; Herzig, Hans Peter; Ballif, Christophe

2013-01-01T23:59:59.000Z

64

Thin Film Solar Technologies | Open Energy Information  

Open Energy Info (EERE)

Jump to: navigation, search Name: Thin Film Solar Technologies Place: South Africa Product: Producers of thin-film copper, indium, gallium, sulphur, selenium modules....

65

Advanced polycrystalline silicon thin film solar cells using high rate plasma enhanced chemical vapour deposited amorphous silicon on textured glass.  

E-Print Network (OSTI)

??Solid phase crystallized polycrystalline silicon (poly-Si) thin-film solar cell on glass is an emerging Photovoltaics (PV) technology combining the robustness of crystalline Si material with… (more)

Jin, Guangyao

2010-01-01T23:59:59.000Z

66

Low-cost, deterministic quasi-periodic photonic structures for light trapping in thin film silicon solar cells  

E-Print Network (OSTI)

Light trapping has been an important issue for thin film silicon solar cells because of the low absorption coefficient in the near infrared range. In this paper, we present a photonic structure which combines anodic aluminum ...

Sheng, Xing

67

Thin film photovoltaic cell  

DOE Patents (OSTI)

A thin film photovoltaic cell having a transparent electrical contact and an opaque electrical contact with a pair of semiconductors therebetween includes utilizing one of the electrical contacts as a substrate and wherein the inner surface thereof is modified by microroughening while being macro-planar.

Meakin, John D. (Newark, DE); Bragagnolo, Julio (Newark, DE)

1982-01-01T23:59:59.000Z

68

Performance and Loss Analyses of High-Efficiency CBD-ZnS/Cu(In1-xGax)Se2 Thin-Film Solar Cells  

E-Print Network (OSTI)

1 Performance and Loss Analyses of High-Efficiency CBD-ZnS/Cu(In1-xGax)Se2 Thin-Film Solar Cells, Setagaya-ku, Tokyo 157-8572, Japan (Received ) KEYWORDS: ZnS buffer, Cu(In,Ga)Se2, thin-film solar cells alternative to CdS in polycrystalline thin-film Cu(In1-xGax)Se2 (CIGS) solar cells. Cells with efficiency

Sites, James R.

69

First-Principles Study of Back Contact Effects on CdTe Thin Film Solar Cells  

SciTech Connect

Forming a chemically stable low-resistance back contact for CdTe thin-film solar cells is critically important to the cell performance. This paper reports theoretical study of the effects of the back-contact material, Sb{sub 2}Te{sub 3}, on the performance of the CdTe solar cells. First-principles calculations show that Sb impurities in p-type CdTe are donors and can diffuse with low diffusion barrier. There properties are clearly detrimental to the solar-cell performance. The Sb segregation into the grain boundaries may be required to explain the good efficiencies for the CdTe solar cells with Sb{sub 2}Te{sub 3} back contacts.

Du, Mao-Hua [ORNL

2009-01-01T23:59:59.000Z

70

Thermal Evaporation and Characterization of Sb2Se3 Thin Film for Substrate Sb2Se3/CdS Solar Cells  

Science Journals Connector (OSTI)

Thermal Evaporation and Characterization of Sb2Se3 Thin Film for Substrate Sb2Se3/CdS Solar Cells ... Here we report Sb2Se3 solar cells fabricated from thermal evaporation. ... Sb2Se3; thermal evaporation; thin film; solar cells ...

Xinsheng Liu; Jie Chen; Miao Luo; Meiying Leng; Zhe Xia; Ying Zhou; Sikai Qin; Ding-Jiang Xue; Lu Lv; Han Huang; Dongmei Niu; Jiang Tang

2014-06-12T23:59:59.000Z

71

Thin-film silicon triple-junction solar cell with 12.5% stable efficiency on innovative flat light-scattering substrate  

E-Print Network (OSTI)

Thin-film silicon triple-junction solar cell with 12.5% stable efficiency on innovative flat light://jap.aip.org/about/rights_and_permissions #12;Thin-film silicon triple-junction solar cell with 12.5% stable efficiency on innovative flat light require light-trapping schemes that are predominantly based on depositing the solar cells on rough

Psaltis, Demetri

72

Microcrystalline SiGe Absorber Layers in Thin-film Silicon Solar Cells  

Science Journals Connector (OSTI)

Abstract We report on physical properties of microcrystalline silicon-germanium (?c-SiGe:H) absorber layers for the use as a bottom structure in silicon based multijunction thin-film solar cells. Due to incorporation of Ge the absorption of the film is enhanced compared to pure ?c-Si:H films. This provides the opportunity to significantly reduce the absorber layer thickness. The experiments were carried out in a 13.56 MHz PECVD reactor using germane, silane and hydrogen as process gases. Single layers were characterized for their optical and electrical properties. Results from single and multijunction solar cells using a ?c- SiGe:H absorbers will be shown. In tandem solar cells a reduction of about 60% of the absorber layer thickness could be reached by using SiGe alloys compared to pristine silicon tandem cells.

K.V. Maydell; K. Grunewald; M. Kellermann; O. Sergeev; P. Klement; N. Reininghaus; T. Kilper

2014-01-01T23:59:59.000Z

73

Back contact buffer layer for thin-film solar cells  

DOE Patents (OSTI)

A photovoltaic cell structure is disclosed that includes a buffer/passivation layer at a CdTe/Back contact interface. The buffer/passivation layer is formed from the same material that forms the n-type semiconductor active layer. In one embodiment, the buffer layer and the n-type semiconductor active layer are formed from cadmium sulfide (CdS). A method of forming a photovoltaic cell includes the step of forming the semiconductor active layers and the buffer/passivation layer within the same deposition chamber and using the same material source.

Compaan, Alvin D.; Plotnikov, Victor V.

2014-09-09T23:59:59.000Z

74

Non-Uniformities in Thin-Film Cadmium Telluride Solar Cells Using Electroluminescence and Photoluminescence  

SciTech Connect

It is the purpose of this research to develop specific imaging techniques that have the potential to be fast, inline tools for quality control in thin-film CdTe solar cells. Electroluminescence (EL) and photoluminescence (PL) are two techniques that are currently under investigation on CdTe small area devices made at Colorado State University. It is our hope to significantly advance the understanding of EL and PL measurements as applied to CdTe. Qualitative analysis of defects and non-uniformities is underway on CdTe using EL, PL, and other imaging techniques.

Zaunbrecher, K.; Johnston, S.; Yan, F.; Sites, J.

2011-01-01T23:59:59.000Z

75

Non-Uniformities in Thin-Film Cadmium Telluride Solar Cells Using Electroluminescence and Photoluminescence: Preprint  

SciTech Connect

It is the purpose of this research to develop specific imaging techniques that have the potential to be fast, in-line tools for quality control in thin-film CdTe solar cells. Electroluminescence (EL) and photoluminescence (PL) are two techniques that are currently under investigation on CdTe small area devices made at Colorado State University. It is our hope to significantly advance the understanding of EL and PL measurements as applied to CdTe. Qualitative analysis of defects and non-uniformities is underway on CdTe using EL, PL, and other imaging techniques.

Zaunbrecher, K.; Johnston, S.; Yan, F.; Sites, J.

2011-07-01T23:59:59.000Z

76

Controlling the Texture and Crystallinity of Evaporated Lead Phthalocyanine Thin Films for Near-Infrared Sensitive Solar Cells  

E-Print Network (OSTI)

Controlling the Texture and Crystallinity of Evaporated Lead Phthalocyanine Thin Films for Near-Infrared Sensitive Solar Cells Karolien Vasseur,, Katharina Broch,§ Alexander L. Ayzner, Barry P. Rand, David Cheyns: To achieve organic solar cells with a broadened spectral absorption, we aim to promote the growth of the near

Schreiber, Frank

77

Copper and Transparent-Conductor Reflectarray Elements on Thin-Film Solar Cell Panels  

E-Print Network (OSTI)

This work addresses the integration of reflectarray antennas (RA) on thin film Solar Cell (SC) panels, as a mean to save real estate, weight, or cost in platforms such as satellites or transportable autonomous antenna systems. Our goal is to design a good RA unit cell in terms of phase response and bandwidth, while simultaneously achieving high optical transparency and low microwave loss, to preserve good SC and RA energy efficiencies, respectively. Since there is a trade-off between the optical transparency and microwave surface conductivity of a conductor, here both standard copper and transparent conductors are considered. The results obtained at the unit cell level demonstrates the feasibility of integrating RA on a thin-film SC, preserving for the first time good performance in terms of both SC and RA efficiency. For instance, measurement at X-band demonstrate families of cells providing a phase range larger than 270{\\deg} with average microwave loss of -2.45dB (resp. -0.25dB) and average optical transpa...

Dreyer, Philippe; Nicolay, Sylvain; Ballif, Christophe; Perruisseau-Carrier, Julien

2013-01-01T23:59:59.000Z

78

QUANTIFICATION OF LOSSES IN THIN-FILM CdS/CdTe SOLAR CELLS S.H. Demtsu and J.R. Sites  

E-Print Network (OSTI)

QUANTIFICATION OF LOSSES IN THIN-FILM CdS/CdTe SOLAR CELLS S.H. Demtsu and J.R. Sites Department of Physics, Colorado State University, Fort Collins, CO 80523, USA ABSTRACT Quantification of solar cell Thin-film CdS/CdTe devices have been studied extensively, but some basic underlying properties

Sites, James R.

79

Ion beam assisted sputter deposition of ZnO for silicon thin-film solar cells  

Science Journals Connector (OSTI)

Ion beam assisted deposition (IBAD) is a promising technique for improving the material quality of ZnO-based thin films. The operation of an auxiliary Ar+ ion source during deposition of ZnO?:?Ga thin films by dc magnetron sputtering led to an improvement in crystalline texture, especially at low temperatures due to momentum transfer from the ions to the growing film. Etching of IBAD-ZnO?:?Ga films in diluted HCl revealed crater-like surface structures with crater diameters of up to 600 nm. These structures are usually achieved after deposition at high substrate temperatures. This is an indication that the grain structure was remarkably changed by bombarding these films during deposition in terms of increasing the compactness of the ZnO?:?Ga films. Subsequent annealing procedures led to an improvement in the electrical and optical properties. Hydrogenated microcrystalline silicon (µc-Si?:?H) solar cells exhibited enhanced efficiency as compared to cells on other low-temperature sputtered reference ZnO films. This improvement was ascribed to light trapping by the modified etching behaviour of the IBAD-ZnO?:?Ga films as well as improved transparency after the vacuum annealing step.

M Warzecha; D Köhl; M Wuttig; J Hüpkes

2014-01-01T23:59:59.000Z

80

CIGS Thin-Film Solar Cell Research at NREL: FY04 Results and Accomplishments  

Office of Scientific and Technical Information (OSTI)

National Renewable Energy Laboratory National Renewable Energy Laboratory Innovation for Our Energy Future A national laboratory of the U.S. Department of Energy Office of Energy Efficiency & Renewable Energy NREL is operated by Midwest Research Institute ● Battelle Contract No. DE-AC36-99-GO10337 Conference Paper NREL/CP-520-37020 January 2005 CIGS Thin-Film Solar Cell Research at NREL: FY04 Results and Accomplishments K. Ramanathan, R.N. Bhattacharya, M.A. Contreras, F.S. Hasoon, J. Abushama, and R. Noufi Presented at the 2004 DOE Solar Energy Technologies Program Review Meeting October 25-28, 2004 Denver, Colorado NOTICE The submitted manuscript has been offered by an employee of the Midwest Research Institute (MRI), a contractor of the US Government under Contract No. DE-AC36-99GO10337. Accordingly, the US

Note: This page contains sample records for the topic "thin-film solar cell" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Thin Film Solar Cells Derived from Sintered Semiconductor Quantum Dots: Cooperative Research and Development Final Report, CRADA number CRD-07-00226  

SciTech Connect

The NREL/Evident team will develop techniques to fabricate thin film solar cells where the absorption layers comprising the solar cells are derived from sintered semiconductor quantum dots.

Ginley, D. S.

2010-07-01T23:59:59.000Z

82

Thin film solar energy collector  

DOE Patents (OSTI)

A multi-layer solar energy collector of improved stability comprising: (1) a substrate of quartz, silicate glass, stainless steel or aluminum-containing ferritic alloy; (2) a solar absorptive layer comprising silver, copper oxide, rhodium/rhodium oxide and 0-15% by weight of platinum; (3) an interlayer comprising silver or silver/platinum; and (4) an optional external anti-reflective coating, plus a method for preparing a thermally stable multi-layered solar collector, in which the absorptive layer is undercoated with a thin film of silver or silver/platinum to obtain an improved conductor-dielectric tandem.

Aykan, Kamran (Monmouth Beach, NJ); Farrauto, Robert J. (Westfield, NJ); Jefferson, Clinton F. (Millburn, NJ); Lanam, Richard D. (Westfield, NJ)

1983-11-22T23:59:59.000Z

83

CRYSTALLINE SILICON THIN-FILM SOLAR CELLS FROM THE POROUS SILICON PROCESS APPLYING CONVECTION ASSISTED CHEMICAL VAPOR DEPOSITION  

E-Print Network (OSTI)

CRYSTALLINE SILICON THIN-FILM SOLAR CELLS FROM THE POROUS SILICON PROCESS APPLYING CONVECTION ASSISTED CHEMICAL VAPOR DEPOSITION Barbara Terheiden,1* Thomas Kunz,2 Ingo Burkert2 , Renate Horbelt,1, D-91058 Erlangen, Germany ABSTRACT: Convection assisted chemical vapor deposition (CoCVD) is applied

84

Spin Coated Plasmonic Nanoparticle Interfaces for Photocurrent Enhancement in Thin Film Si Solar Cells  

E-Print Network (OSTI)

Nanoparticle (NP) arrays of noble metals strongly absorb light in the visible to infrared wavelengths through resonant interactions between the incident electromagnetic field and the metal's free electron plasma. Such plasmonic interfaces enhance light absorption and photocurrent in solar cells. We report a cost effective and scalable room temperature/pressure spin-coating route to fabricate broadband plasmonic interfaces consisting of silver NPs. The NP interface yields photocurrent enhancement (PE) in thin film silicon devices by up to 200% which is significantly greater than previously reported values. For coatings produced from Ag nanoink containing particles with average diameter of 40 nm, an optimal NP surface coverage of 7% was observed. Scanning electron microscopy of interface morphologies revealed that for low surface coverage, particles are well-separated, resulting in broadband PE. At higher surface coverage, formation of particle strings and clusters caused red-shifting of the PE peak and a narro...

Israelowitz, Miriam; Cong, Tao; Sureshkumar, Radhakrishna

2013-01-01T23:59:59.000Z

85

Resonant cavity enhanced light harvesting in flexible thin-film organic solar cells  

E-Print Network (OSTI)

of solar energy conversion be- cause they use thin films of photoactive material and can be manufactured achieving complete optical absorption and good carrier transport. A photoactive film thickness of 200 nm charge transport to allow for complete carrier extraction. To address this trade-off, absorption en

Fan, Shanhui

86

Light trapping in thin-film solar cells measured by Raman spectroscopy  

SciTech Connect

In this study, Raman spectroscopy is used as a tool to determine the light-trapping capability of textured ZnO front electrodes implemented in microcrystalline silicon (?c-Si:H) solar cells. Microcrystalline silicon films deposited on superstrates of various roughnesses are characterized by Raman micro-spectroscopy at excitation wavelengths of 442?nm, 514?nm, 633?nm, and 785?nm, respectively. The way to measure quantitatively and with a high level of reproducibility the Raman intensity is described in details. By varying the superstrate texture and with it the light trapping in the ?c-Si:H absorber layer, we find significant differences in the absolute Raman intensity measured in the near infrared wavelength region (where light trapping is relevant). A good agreement between the absolute Raman intensity and the external quantum efficiency of the ?c-Si:H solar cells is obtained, demonstrating the validity of the introduced method. Applications to thin-film solar cells, in general, and other optoelectronic devices are discussed.

Ledinský, M., E-mail: ledinsky@fzu.cz [Laboratory of Nanostructures and Nanomaterials, Institute of Physics, Academy of Sciences of the Czech Republic, v. v. i., Cukrovarnická 10, 162 00 Prague (Czech Republic); Photovoltaics and Thin Film Electronics Laboratory, Institute of Microengineering (IMT), École Polytechnique Fédérale de Lausanne (EPFL), Rue de la Maladière 71b, CH-2000 Neuchâtel (Switzerland); Moulin, E.; Bugnon, G.; Meillaud, F.; Ballif, C. [Photovoltaics and Thin Film Electronics Laboratory, Institute of Microengineering (IMT), École Polytechnique Fédérale de Lausanne (EPFL), Rue de la Maladière 71b, CH-2000 Neuchâtel (Switzerland); Ganzerová, K.; Vetushka, A.; Fejfar, A. [Laboratory of Nanostructures and Nanomaterials, Institute of Physics, Academy of Sciences of the Czech Republic, v. v. i., Cukrovarnická 10, 162 00 Prague (Czech Republic)

2014-09-15T23:59:59.000Z

87

Dyadic Green’s functions of thin films: Applications within plasmonic solar cells  

Science Journals Connector (OSTI)

Optimization and design of silicon solar cells by exploiting light scattering from metal nanoparticles to increase the efficiency is addressed in the small particle limit from a fundamental point of view via the dyadic Green’s function formulation. Based on the dyadic Green’s function (Green’s tensor) of a three-layer geometry, light scattering from electric point dipoles (representing small metal scatterers) located within a thin layer sandwiched between a substrate and a superstrate is analyzed. Starting from the full dyadic Green’s function we derive analytical near- and far-field approximations. The far-field approximations enable efficient, exact, and separate evaluation of light scattering into waves that propagate in the substrate or the superstrate. Based on the near-field approximation we present a semianalytical expression for the total near-field absorption in the substrate. The theoretical approach is used to analyze realistic configurations for plasmon-assisted silicon solar cells. We show that by embedding metal nanoscatterers in a thin film with a high refractive index (rutile TiO2 with n?2.5) on top of the silicon, the fraction of scattered light that couples into the solar cell can become larger than 96%, and an optical path length enhancement of more than 100 can be achieved.

Jesper Jung; Thomas Søndergaard; Thomas Garm Pedersen; Kjeld Pedersen; Arne Nylandsted Larsen; Brian Bech Nielsen

2011-02-23T23:59:59.000Z

88

DEVELOPMENT OF A NOVEL PRECURSOR FOR THE PREPARATION BY SELENIZATION OF HIGH EFFICIENCY CuInGaSe2/CdS THIN FILM SOLAR CELLS  

E-Print Network (OSTI)

/CdS THIN FILM SOLAR CELLS N. Romeo1 , A. Bosio1 , V. Canevari2 , R. Tedeschi1 , S. Sivelli1 , A. Solar cells prepared by depositing in sequence on top of the CuInGaSe2 film 60 nm of CdS, 100 nm of pure(InGa)Se2, Thin Films, Selenization 1 INTRODUCTION CuInGaSe2 based solar cells exhibit the highest

Romeo, Alessandro

89

Optical and recombination losses in thin-film Cu(In,Ga)Se2 solar cells  

Science Journals Connector (OSTI)

Abstract Optical and recombination losses in thin-film solar cells based on CuInxGa1-xSe2 with the bandgaps 1.14–1.16 and 1.36–1.38 eV have been evaluated. Parameters used for the analysis and calculations were verified by comparing the measured quantum efficiency spectra with the results of calculations. Optical losses due to reflections from the interfaces and absorption in the ZnO and CdS layers are found using the optical constants of materials taking into account anti-reflection coating on the ZnO surface. It is shown that for typical parameters of solar cells studied the optical losses amount to 16–18%. Losses due to the recombination of charge carriers at the front and back surfaces of the absorbing layer and in the space charge region (SCR) are calculated based on their dependences on the carrier lifetime, the concentration of uncompensated acceptors (determined the width of the SCR) and other parameters of the absorber. Total recombination losses in solar cells with the bandgaps of CuIn(Ga,In)Se2 1.14 and 1.36 eV are equal to 7.0% and 4.5%, respectively. It is also shown that for solar cell with the bandgap of absorber 1.14 eV, an incomplete charge collection is caused also due to non-optimal width of the SCR. An improvement of charge collection in this cell can be achieved by varying the concentration of uncompensated acceptors in the absorber. However, it is impossible to achieve such improvement for solar cells with the bandgap of 1.36 eV due to shorter carrier lifetime in the material.

L.A. Kosyachenko; X. Mathew; P.D. Paulson; V.Ya. Lytvynenko; O.L. Maslyanchuk

2014-01-01T23:59:59.000Z

90

Theoretical study of the efficiency of CdS/PbS thin film solar cells  

Science Journals Connector (OSTI)

Abstract This work represents a theoretical analysis of a new type of thin film solar cells with structure glass/ITO/CdS/PbS/AL. The transmission spectrum was calculated based on the multi-reflections effect from all cell layers as well as absorption effect in both ITO and CdS layers. The calculations of spectral internal quantum efficiency were carried out based on the front and back surface recombination of PbS layer. The recombination losses in space-charge region were studied. The effect of thickness of the absorber layer on the calculations of short-circuit current density was studied under illumination condition of AM1.5 solar irradiation. The data of open circuit voltage, maximum voltage, maximum current density, fill factor, output power density and efficiency of CdS/PbS solar cell were estimated from the J–V characteristics curve under illumination effect. This study ignored the effect of metallic back contact and thus the incomplete absorption losses (transmission losses) take place at thin absorber layer. The obtained results showed that the 2 ?m thickness of the absorber layer is not sufficient to absorb all the transmitted photons from the window layer (CdS) and the selection of theses thin thicknesses of PbS in order to correspond with experimental implementations of these devices. Both the optical and recombination losses lead to decrease the current density by 82% (JSC = 7.28 mA/cm2) at thickness 0.5 ?m of PbS and these losses decreased to 67% (JSC = 16 mA/cm2) at thickness 2 ?m. The output power density and the cell efficiency increased with increasing the thickness of effective layer. The maximum cell efficiency of 4.13% was obtained at thickness of 2 ?m which is considered greater than those obtained experimentally.

H.A. Mohamed

2014-01-01T23:59:59.000Z

91

New strategy to promote conversion efficiency using high-index nanostructures in thin-film solar cells  

E-Print Network (OSTI)

Nano-scaled metallic or dielectric structures may provide various ways to trap light into thin-film solar cells for improving the conversion efficiency. In most schemes, the textured active layers are involved into light trapping structures that can provide perfect optical benefits but also bring undesirable degradation of electrical performance. Here we propose a novel approach to design high-performance thin-film solar cells. In our strategy, a flat active layer is adopted for avoiding electrical degradation, and an optimization algorithm is applied to seek for an optimized light trapping structure for the best optical benefit. As an example, we show that the efficiency of a flat a-Si:H thin-film solar cell can be promoted close to the certified highest value. It is also pointed out that, by choosing appropriate dielectric materials with high refractive index (>3) and high transmissivity in wavelength region of 350nm-800nm, the conversion efficiency of solar cells can be further enhanced.

Wang, DongLin

2014-01-01T23:59:59.000Z

92

Doping profiles in CdTe/CdS thin film solar cells  

Science Journals Connector (OSTI)

CdS/CdTe thin film solar cells showing comparable properties as commercial cells have been prepared by close space sublimation (CSS) in our own laboratory. We characterised the cells by capacitance–voltage profiling (C–V), thermal admittance spectroscopy (TAS), and thermally stimulated capacitance measurements (TSCAP). The doping profiles of the CdTe layer obtained by C–V measurements confirm the well known rise in dopant concentration with increasing depth if the usual evaluation procedure is employed. However, the TAS and TSCAP measurements reveal deep acceptors in the CdTe layer with a large concentration exceeding that of the shallow dopants. Under these conditions, C–V measurements are shown to yield an apparently rising dopant concentration even for homogeneous doping. A combined simulation of doping profiles measured at different temperatures using a fixed and uniform shallow and deep doping fits well to measured doping concentration. These results indicate how to get reliable information on the shallow dopant concentration.

U. Reislöhner; M. Hädrich; N. Lorenz; H. Metzner; W. Witthuhn

2007-01-01T23:59:59.000Z

93

Remarkable progress in thin-film silicon solar cells using high-efficiency triple-junction technology  

Science Journals Connector (OSTI)

Abstract Despite the many advantages of thin-film silicon (Si) solar cells, their low efficiencies remain a challenge that must be overcome. Efficient light utilization across the solar spectrum is required to achieve efficiencies over 15%, allowing them to be competitive with other solar cell technologies. To produce high-efficiency thin-film Si solar cells, we have developed triple-junction solar cell structures to enhance solar spectrum utilization. To maximize the light management, in-house ZnO:Al layers with high haze ratios and high transmittances were developed. In addition, novel doping layers, such as n-type microcrystalline silicon oxide (µc-SiOx:H), which has a very low refractive index, and p-type microcrystalline silicon oxide (µc-SiOx:H), which has a wide bandgap, were successfully applied to the optical reflector and the window layer, respectively. Thin-film quality control techniques for the deposition of hydrogenated amorphous silicon (a-Si:H) in the top cell, hydrogenated amorphous silicon-germanium (a-SiGe:H) or hydrogenated microcrystalline silicon (?c-Si:H) in the middle cell, and hydrogenated microcrystalline silicon (?c-Si:H) in the bottom cell were also important factors leading to the production of high-efficiency triple-junction solar cells. As a result of this work, an initial efficiency of 16.1% (in-house measurement) in the a-Si:H/a-SiGe:H/?c-Si:H stack and a stabilized efficiency of 13.4% (confirmed by NREL) in the a-Si:H/?c-Si:H/?c-Si:H stack were successfully achieved in a small-area triple-junction solar cell with dimensions of 1 cm×1 cm.

Soohyun Kim; Jin-Won Chung; Hyun Lee; Jinhee Park; Younho Heo; Heon-Min Lee

2013-01-01T23:59:59.000Z

94

Thin film photovoltaic cells  

DOE Patents (OSTI)

A solar cell has as its transparent electrical contact a grid made from a non-noble metal by providing a layer of copper oxide between the transparent electrical contact and the absorber-generator.

Rothwarf, Allen (Philadelphia, PA)

1981-01-01T23:59:59.000Z

95

Methods for forming thin-film heterojunction solar cells from I-III-VI{sub 2}  

DOE Patents (OSTI)

An improved thin-film, large area solar cell, and methods for forming the same are disclosed, having a relatively high light-to-electrical energy conversion efficiency and characterized in that the cell comprises a p-n type heterojunction formed of: (i) a first semiconductor layer comprising a photovoltaic active material selected from the class of I-III-VI{sub 2} chalcopyrite ternary materials which is vacuum deposited in a thin ``composition-graded`` layer ranging from on the order of about 2.5 microns to about 5.0 microns ({approx_equal}2.5 {mu}m to {approx_equal}5.0 {mu}m) and wherein the lower region of the photovoltaic active material preferably comprises a low resistivity region of p-type semiconductor material having a superimposed region of relatively high resistivity, transient n-type semiconductor material defining a transient p-n homojunction; and (ii) a second semiconductor layer comprising a low resistivity n-type semiconductor material; wherein interdiffusion occurs (a) between the elemental constituents of the two discrete juxtaposed regions of the first semiconductor layer defining a transient p-n homojunction layer, and (b) between the transient n-type material in the first semiconductor layer and the second n-type semiconductor layer. 16 figs.

Mickelsen, R.A.; Chen, W.S.

1985-08-13T23:59:59.000Z

96

Methods for forming thin-film heterojunction solar cells from I-III-VI.sub. 2  

DOE Patents (OSTI)

An improved thin-film, large area solar cell, and methods for forming the same, having a relatively high light-to-electrical energy conversion efficiency and characterized in that the cell comprises a p-n type heterojunction formed of: (i) a first semiconductor layer comprising a photovoltaic active material selected from the class of I-III-VI.sub.2 chalcopyrite ternary materials which is vacuum deposited in a thin "composition-graded" layer ranging from on the order ot about 2.5 microns to about 5.0 microns (.congruent.2.5 .mu.m to .congruent.5.0 .mu.m) and wherein the lower region of the photovoltaic active material preferably comprises a low resistivity region of p-type semiconductor material having a superimposed region of relatively high resistivity, transient n-type semiconductor material defining a transient p-n homojunction; and (ii), a second semiconductor layer comprising a low resistivity n-type semiconductor material; wherein interdiffusion (a) between the elemental constituents of the two discrete juxtaposed regions of the first semiconductor layer defining a transient p-n homojunction layer, and (b) between the transient n-type material in the first semiconductor layer and the second n-type semiconductor layer, causes the The Government has rights in this invention pursuant to Contract No. EG-77-C-01-4042, Subcontract No. XJ-9-8021-1 awarded by the U.S. Department of Energy.

Mickelsen, Reid A. (Bellevue, WA) [Bellevue, WA; Chen, Wen S. (Seattle, WA) [Seattle, WA

1985-08-13T23:59:59.000Z

97

Development of Commercial Technology for Thin Film Silicon Solar Cells on Glass: Cooperative Research and Development Final Report, CRADA Number CRD-07-209  

SciTech Connect

NREL has conducted basic research relating to high efficiency, low cost, thin film silicon solar cell design and the method of making solar cells. Two patents have been issued to NREL in the above field. In addition, specific process and metrology tools have been developed by NREL. Applied Optical Sciences Corp. (AOS) has expertise in the manufacture of solar cells and has developed its own unique concentrator technology. AOS wants to complement its solar cell expertise and its concentrator technology by manufacturing flat panel thin film silicon solar cell panels. AOS wants to take NREL's research to the next level, using it to develop commercially viable flat pane, thin film silicon solar cell panels. Such a development in equipment, process, and metrology will likely produce the lowest cost solar cell technology for both commercial and residential use. NREL's fundamental research capability and AOS's technology and industrial background are complementary to achieve this product development.

Sopori, B.

2013-03-01T23:59:59.000Z

98

Effect of Ag doping on opto-electrical properties of CdS thin films for solar cell applications  

Science Journals Connector (OSTI)

Abstract Cadmium sulfide (CdS) polycrystalline thin films of different thicknesses (ranging from 370 nm to 750 nm) were fabricated on corning glass substrates using Close Spaced Sublimation (CSS) technique. Optical and electrical investigation revealed that CdS thin films show an appreciable transparency (50–70% transmission) in visible range and a highly resistive behavior (106 ? cm). Samples were doped by silver (Ag) at different concentrations, using ion exchange technique, in order to reduce the resistivity of CdS thin films and to improve their efficiency as a window layer for solar cell application. The doping of Ag in pure CdS thin films resulted into an increase of surface roughness and a decrease both in electrical resistivity and in transparency. By optimizing annealing parameters, we were able to properly control the optical properties of the present system. In fact, the Ag doping of pure CdS films has led to a decrease of the sample resistivity by three orders of magnitude (103 ? cm) against a 20% cut in optical transmission.

Adnan Nazir; Andrea Toma; Nazar Abbas Shah; Simone Panaro; Sajid Butt; Rizwan ur Rehman Sagar; Waseem Raja; Kamran Rasool; Asghari Maqsood

2014-01-01T23:59:59.000Z

99

An Unconventional Route to High-Efficiency Dye-Sensitized Solar Cells via Embedding Graphitic Thin Films into TiO2 Nanoparticle  

E-Print Network (OSTI)

and impedance spectroscopy. KEYWORDS: Carbon/TiO2 thin film, dye-sensitized solar cells, block copolymer-treated single-wall carbon nanotubes (a-SWCNs) in TiO2 film.37 The a-SWCNs modified solar cell indicated a 25An Unconventional Route to High-Efficiency Dye-Sensitized Solar Cells via Embedding Graphitic Thin

Lin, Zhiqun

100

Thin-film solar cells: review of materials, technologies and commercial status  

Science Journals Connector (OSTI)

As apparent from Table 1..., showing the production volume for different manufacturers of these thin-film technologies over the past 3 years, rapidly-growing ... are also increasing rapidly, the thin-film technologies

Martin A. Green

2007-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "thin-film solar cell" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

High Efficiency CdTe/CdS Thin Film solar Cells by a Process Suitable for Large Scale Production. N. Romeo, A. Bosio, A. Romeo, M. Bianucci, L. Bonci, C. Lenti  

E-Print Network (OSTI)

High Efficiency CdTe/CdS Thin Film solar Cells by a Process Suitable for Large Scale Production. N-mail:Nicola.Romeo@fis.unipr.it ABSTRACT: It has been demonstrated that CdTe/CdS thin film solar cells can exhibit an efficiency around 16 Film. 1 INTRODUCTION CdTe/CdS thin film solar cells have a good possibility to be produced on large

Romeo, Alessandro

102

Design and fabrication of photonic crystal thin film photovoltaic cells Guillaume Gomarda,b  

E-Print Network (OSTI)

Design and fabrication of photonic crystal thin film photovoltaic cells Guillaume Gomarda,b , Ounsi of an absorbing planar photonic crystal within a thin film photovoltaic cell. The devices are based on a stack with large areas. Keywords: Photonic crystal, Photovoltaic solar cell, Thin film solar cell, Hydrogenated

Paris-Sud XI, Université de

103

Thin films for solar control applications  

Science Journals Connector (OSTI)

...properly cited. Thin films for solar control applications Sapna Shrestha...performance of vacuum glazing. Solar Energy 81, 8. ( doi:10...mirrors produced by plasma ion assisted deposition. J. Non-Cryst...and cost of vacuum glazing. Solar Energy 55, 151. ( doi:10...

2010-01-01T23:59:59.000Z

104

Absorber processing issues in high-efficiency, thin-film Cu(In,Ga)Se{sub 2}-based solar cells  

SciTech Connect

Three approaches to thin-film Cu(In,Ga)Se{sub 2} absorber fabrication are considered. They are generically described in terms of the sequential or concurrent nature of source material delivery, selenium delivery, and compound formation. A two-stage evaporation process successfully produced the absorber component of a world-record, 17.1{percent} efficient solar cell. Alternative approaches that reduce the requirements for high substrate temperatures are considered. The relationship between absorber process parameters, band gap profile, and device performance are examined. Engineering the [Ga]/([Ga]+[In]) profile in the absorber has led to the reported advances. {copyright} {ital 1996 American Institute of Physics.}

Tuttle, J.R.; Gabor, A.M.; Contreras, M.A.; Tennant, A.L.; Ramanathan, K.R.; Franz, A.; Matson, R.; Noufi, R. [National Renewable Energy Laboratory, Golden, Colorado 80401 (United States)

1996-01-01T23:59:59.000Z

105

Simulation of nanostructure-based and ultra-thin film solar cell devices beyond the classical picture  

E-Print Network (OSTI)

In this paper, an optoelectronic device simulation framework valid for arbitrary spatial variation of electronic potentials and optical modes, and for transport regimes ranging from ballistic to diffusive, is used to study non-local photon absorption, photocurrent generation and carrier extraction in ultra-thin film and nanostructure-based solar cell devices at the radiative limit. Among the effects that are revealed by the microscopic approach and which are inaccessible to macroscopic models is the impact of structure, doping or bias induced nanoscale potential variations on the local photogeneration rate and the photocarrier transport regime.

Aeberhard, Urs

2014-01-01T23:59:59.000Z

106

ITO, Si3N4 and ZnO: Al -- Simulation of Different Anti-reflection Coatings (ARC) for Thin Film a-Si:H Solar Cells  

Science Journals Connector (OSTI)

For thin film solar cells incorporating amorphous silicon (a-Si:H) as absorber materials, minimizing reflection from the top surface i.e. maximizing transmittance of the incoming light into the absorber for higher absorption plays an important role for ... Keywords: ARC, TCO, ITO, Si3N4, ZnO:Al, Solar cell

Kazi Islam; Aaesha Alnuaimi; Helmy Ally; Ammar Nayfeh

2013-11-01T23:59:59.000Z

107

Advanced Light-Trapping in Thin-Film Silicon Solar Cells  

Science Journals Connector (OSTI)

Light-trapping schemes are essential for high efficiency thin-film Silicon devices. Implementation of various light-trapping/scattering elements will be discussed. An optimum textured...

Wyrsch, Nicolas

108

Design, fabrication and optical characterization of photonic crystal assisted thin film monocrystalline-silicon solar cells  

Science Journals Connector (OSTI)

In this paper, we present the integration of an absorbing photonic crystal within a monocrystalline silicon thin film photovoltaic stack fabricated without epitaxy. Finite difference...

Meng, Xianqin; Depauw, Valérie; Gomard, Guillaume; El Daif, Ounsi; Trompoukis, Christos; Drouard, Emmanuel; Jamois, Cécile; Fave, Alain; Dross, Frédéric; Gordon, Ivan; Seassal, Christian

2012-01-01T23:59:59.000Z

109

Alta Devices Develops World Record Setting Thin-Film Solar Cell  

Office of Energy Efficiency and Renewable Energy (EERE)

EERE supported the development of Alta Devices' thin film Gallium Arsenide photovoltaic technology that set a world record for conversion efficiency.

110

Fully Solution-Processed Copper Chalcopyrite Thin Film Solar Cells: Materials Chemistry, Processing, and Device Physics  

E-Print Network (OSTI)

energy sources, the potential of solar energy is the mostuse of solar cells as an energy source [2]. Therefore, thinspread use of solar cells as a renewable energy source [2].

Chung, Choong-Heui

2012-01-01T23:59:59.000Z

111

Thin film absorber for a solar collector  

DOE Patents (OSTI)

This invention pertains to energy absorbers for solar collectors, and more particularly to high performance thin film absorbers. The solar collectors comprising the absorber of this invention overcome several problems seen in current systems, such as excessive hardware, high cost and unreliability. In the preferred form, the apparatus features a substantially rigid planar frame with a thin film window bonded to one planar side of the frame. An absorber in accordance with the present invention is comprised of two thin film layers that are sealed perimetrically. In a preferred embodiment, thin film layers are formed from a metal/plastic laminate. The layers define a fluid-tight planar envelope of large surface area to volume through which a heat transfer fluid flows. The absorber is bonded to the other planar side of the frame. The thin film construction of the absorber assures substantially full envelope wetting and thus good efficiency. The window and absorber films stress the frame adding to the overall strength of the collector.

Wilhelm, William G. (Cutchogue, NY)

1985-01-01T23:59:59.000Z

112

Designing Randomness - The Impact of Textured Surfaces on the Efficiency of Thin-Film Solar Cells  

Science Journals Connector (OSTI)

We analyze experimentally and theoretically light localization at randomly textured ZnO surfaces and light absorption in thin-film amorphous Si deposited conformal on it. Guidance is...

Beckers, Thomas; Bittkau, Karsten; Carius, Reinhard; Fahr, Stephan; Rockstuhl, Carsten; Lederer, Falk

113

Optimization-based design of surface textures for thin-film Si solar cells  

E-Print Network (OSTI)

We numerically investigate the light-absorption behavior of thin-film silicon for normal-incident light, using surface textures to enhance absorption. We consider a variety of texture designs, such as simple periodic ...

Sheng, Xing

114

Development of CdTe thin film solar cells on flexible foil substrates.  

E-Print Network (OSTI)

??Cadmium telluride (CdTe) is a leading thin film photovoltaic (PV) material due to its near ideal band gap of 1.45 eV, its high optical absorption… (more)

Hodges, Deidra Ranel

2009-01-01T23:59:59.000Z

115

CdTe/CdS Thin Film Solar Cells Fabricated on Flexible Substrates.  

E-Print Network (OSTI)

??Cadmium Telluride (CdTe) is a leading thin film photovoltaic (PV) material due to its near ideal bandgap of 1.45 eV and its high optical absorption… (more)

Palekis, Vasilios

2011-01-01T23:59:59.000Z

116

Polycrystalline?thin?film thermophotovoltaic cells  

Science Journals Connector (OSTI)

Thermophotovoltaic (TPV) cells convert thermal energy to electricity. Modularity portability silent operation absence of moving parts reduced air pollution rapid start?up high power densities potentially high conversion efficiencies choice of a wide range of heat sources employing fossil fuels biomass and even solar radiation are key advantages of TPV cells in comparison with fuel cells thermionic and thermoelectric convertors and heat engines. The potential applications of TPV systems include: remote electricity supplies transportation co?generation electric?grid independent appliances and space aerospace and military power applications. The range of bandgaps for achieving high conversion efficiencies using low temperature (1000–2000 K) black?body or selective radiators is in the 0.5–0.75 eV range. Present high efficiency convertors are based on single crystalline materials such as In1?x Ga x As GaSb and Ga1?x In x Sb. Several polycrystalline thin films such as Hg1?x Cd x Te Sn1?x Cd2x Te2 and Pb1?x Cd x Te etc. have great potential for economic large?scale applications. A small fraction of the high concentration of charge carriers generated at high fluences effectively saturates the large density of defects in polycrystalline thin films. Photovoltaic conversion efficiencies of polycrystalline thin films and PV solar cells are comparable to single crystalline Si solar cells e.g. 17.1% for CuIn1?x Ga x Se2 and 15.8% for CdTe. The best recombination?state density N t is in the range of 10?15–10?16 cm?3 acceptable for TPV applications. Higher efficiencies may be achieved because of the higher fluences possibility of bandgap tailoring and use of selective emitters such as rare earth oxides (erbia holmia yttria) and rare earth?yttrium aluminium garnets. As compared to higher bandgap semiconductors such as CdTe it is easier to dope the lower bandgap semiconductors. TPV cell development can benefit from the more mature PV solar cell and opto?electronic (infrared detectors lasers and optical communications) technologies. Low bandgaps and larger fluences employed in TPV cells result in very high current densities which make it difficult to collect the current effectively. Techniques for laser and mechanical scribing integral interconnection and multi?junction tandem structures which have been fairly well developed for thin?film PV solar cells could be further refined for enhancing the voltages from TPV modules. Thin?film TPV cells may be deposited on metals or back?surface reflectors. Spectral control elements such as indium?tin oxide or tin oxide may be deposited directly on the TPV convertor. It would be possible to reduce the cost of TPV technologies based on single?crystal materials being developed at present to the range of US$ 2–5 per watt so as to be competitive in small to medium size commercial applications. However a further cost reduction to the range of US ¢ 35–$ 1 per watt to reach the more competitive large?scale residential consumer and hybrid?electric car markets would be possible only with the polycrystalline?thin film TPV cells.

Neelkanth G. Dhere

1996-01-01T23:59:59.000Z

117

High efficiency thin-film crystalline Si/Ge tandem solar cell  

Science Journals Connector (OSTI)

We propose and simulate a photovoltaic solar cell comprised of Si and Ge pn junctions in tandem. With an anti-reflection film at the front surface, we have shown that optimal solar...

Sun, G; Chang, F; Soref, R A

2010-01-01T23:59:59.000Z

118

CuIn1-xGaxS2 thin film solar cells with ZnxCd1-xS as heterojunction partner Bhaskar Kumar  

E-Print Network (OSTI)

CuIn1-xGaxS2 thin film solar cells with ZnxCd1-xS as heterojunction partner Bhaskar Kumar 1 , Parag). i:ZnO/Al:ZnO transparent and conducting window bilayer was deposited by RF magnetron sputtering

Sites, James R.

119

Plasmonic gratings for enhanced light-trapping in thin-film organic solar cells  

Science Journals Connector (OSTI)

We discuss optimized silver gratings to enhance absorption in organic solar cells. The enhancement is attributed to generated surface plasmon (SP) polaritons and localized SP...

Le, Khai Q; Alù, Andrea

120

Resonant cavity enhanced light harvesting in flexible thin-film organic solar cells  

Science Journals Connector (OSTI)

Dielectric/metal/dielectric (DMD) electrodes have the potential to significantly increase the absorption efficiency and photocurrent in flexible organic solar cells. We demonstrate...

Sergeant, Nicholas P; Niesen, Bjoern; Liu, Albert S; Boman, Lee; Stoessel, Chris; Heremans, Paul; Peumans, Peter; Rand, Barry P; Fan, Shanhui

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "thin-film solar cell" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Processing and modeling issues for thin-film solar cell devices. Annual subcontract report, January 16, 1994--January 15, 1995  

SciTech Connect

This report describes results achieved during the second phase of a four year subcontract to develop and understand thin film solar cell technology related to a-Si and its alloys, CuIn{sub 1{minus}x}Ga{sub x}Se{sub 2}, and CdTe. Accomplishments during this phase include, development of equations and reaction rates for the formation of CuIn{sub 1{minus}x}Ga{sub x}Se{sub 2} films by selenization, fabrication of a 15% efficient CuIn{sub 1{minus}x}Ga{sub x}Se{sub 2} cell, development of a reproducible, reliable Cu-diffused contact to CdTe, investigation of the role of CdTe-CdS interdiffusion on device operation, investigation of the substitution of HCl for CdCl{sub 2} in the post-deposition heat treatment of CdTe/CdS, demonstration of an improved reactor design for deposition of a-Si films, demonstration of improved process control in the fabrication of a ten set series of runs producing {approximately}8% efficient a-Si devices, demonstration of the utility of a simplified optical model for determining quantity and effect of current generation in each layer of a triple stacked a-Si cell, presentation of analytical and modeling procedures adapted to devices produced with each material system, presentation of baseline parameters for devices produced with each material system, and various investigations of the roles played by other layers in thin film devices including the Mo underlayer, CdS and ZnO in CuIn{sub 1{minus}x}Ga{sub x}Se{sub 2} devices, the CdS in CdTe devices, and the ZnO as window layer and as part of the back surface reflector in a-Si devices. In addition, collaborations with over ten research groups are briefly described. 73 refs., 54 figs., 34 tabs.

Birkmire, R.W.; Phillips, J.E.; Buchanan, W.A.; Hegedus, S.S.; McCandless, B.E.; Shafarman, W.N. [Delaware Univ., Newark, DE (United States). Inst. of Energy Conversion

1995-06-01T23:59:59.000Z

122

Towards high efficiency thin-film crystalline silicon solar cells: The roles of light trapping and non-radiative recombinations  

SciTech Connect

Thin-film solar cells based on silicon have emerged as an alternative to standard thick wafers technology, but they are less efficient, because of incomplete absorption of sunlight, and non-radiative recombinations. In this paper, we focus on the case of crystalline silicon (c-Si) devices, and we present a full analytic electro-optical model for p-n junction solar cells with Lambertian light trapping. This model is validated against numerical solutions of the drift-diffusion equations. We use this model to investigate the interplay between light trapping, and bulk and surface recombination. Special attention is paid to surface recombination processes, which become more important in thinner devices. These effects are further amplified due to the textures required for light trapping, which lead to increased surface area. We show that c-Si solar cells with thickness of a few microns can overcome 20% efficiency and outperform bulk ones when light trapping is implemented. The optimal device thickness in presence of light trapping, bulk and surface recombination, is quantified to be in the range of 10–80??m, depending on the bulk quality. These results hold, provided the effective surface recombination is kept below a critical level of the order of 100?cm/s. We discuss the possibility of meeting this requirement, in the context of state-of-the-art techniques for light trapping and surface passivation. We show that our predictions are within the capability of present day silicon technologies.

Bozzola, A., E-mail: angelo.bozzola@unipv.it; Kowalczewski, P.; Andreani, L. C. [Physics Department, University of Pavia and CNISM, via Bassi 6, I-27100 Pavia (Italy)

2014-03-07T23:59:59.000Z

123

High Efficiency CdTe/CdS Thin Film Solar Cells Prepared by Treating CdTe Films with a Freon Gas in Substitution of CdCl2  

E-Print Network (OSTI)

High Efficiency CdTe/CdS Thin Film Solar Cells Prepared by Treating CdTe Films with a Freon Gas delle Scienze, 37/A-43010 Fontanini, Parma, Italy ABSTRACT: CdTe/CdS thin film solar cells have reached in the preparation of high efficiency CdTe/CdS solar cells is the activation treatment of CdTe film. Most research

Romeo, Alessandro

124

Barrier Coatings for Thin Film Solar Cells: Final Subcontract Report, September 1, 2002 -- January 30, 2008  

SciTech Connect

This program has involved investigations of the stability of CdTe and copper-indium-gallium-diselenide (CIGS) solar cells under damp heat conditions and effects of barrier coatings.

Olsen, L. C.

2010-03-01T23:59:59.000Z

125

Fully Solution-Processed Copper Chalcopyrite Thin Film Solar Cells: Materials Chemistry, Processing, and Device Physics  

E-Print Network (OSTI)

CuIn(Se,S) 2 solar cell with a PCE of 11.1% under dark andpower conversion efficiency (PCE) of around 20% among thinAchievement of such high PCE can be largely ascribed to the

Chung, Choong-Heui

2012-01-01T23:59:59.000Z

126

Novel textured glass substrate with high light trapping capacity for thin film Si solar cells application  

Science Journals Connector (OSTI)

A novel large feature size crater like glass substrate was proposed in this paper. P-i-n type microcrystalline silicon film solar cell with higher external quantum efficiency was...

Wang, Yanfeng; Zhang, xiaodan; Bai, Lisha; Huang, Qian; Wei, Changchun; Zhao, Ying

127

Light trapping in thin film solar cells using textured photonic crystal  

DOE Patents (OSTI)

A solar cell includes a photoactive region that receives light. A photonic crystal is coupled to the photoactive region, wherein the photonic crystal comprises a distributed Bragg reflector (DBR) for trapping the light.

Yi, Yasha (Somerville, MA); Kimerling, Lionel C. (Concord, MA); Duan, Xiaoman (Amesbury, MA); Zeng, Lirong (Cambridge, MA)

2009-01-27T23:59:59.000Z

128

Nano-photonic Light Trapping In Thin Film Solar Dennis M. Callahan Jr.  

E-Print Network (OSTI)

Nano-photonic Light Trapping In Thin Film Solar Cells Thesis by Dennis M. Callahan Jr. In Partial. Jeremy Munday for helping me get started on the thin-film GaAs project and for all the time we spent to thank Dr. Jonathan Grandidier for working closely with me for a couple years on the nano sphere solar

Winfree, Erik

129

Electrodeposition of Antimony Selenide Thin Films and Application in Semiconductor Sensitized Solar Cells  

Science Journals Connector (OSTI)

The current–voltage characteristic of the cells were measured using a xenon arc lamp simulator (Sun 2000, ABET Technologies) with an AM 1.5 G spectral filter, and the intensity was adjusted to provide 1 sun (100 mW/cm2) using a calibrated silicon solar cell. ... In selenosulfate electrolyte, the cathodic current detected for V production of Se2– by means of SeSO32– + 2 e– = Se2– + SO2–. ... Indeed, the Jsc is similar to values reported for the state of the art of the inorganic semiconductor sensitized solar cells based on liquid(36) and organic(7) hole conductors. ...

T. Tuyen Ngo; Sudam Chavhan; Ivet Kosta; Oscar Miguel; Hans-Jurgen Grande; Ramón Tena-Zaera

2014-01-17T23:59:59.000Z

130

Low-Cost Light Weigh Thin Film Solar Concentrators  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Light Weight Thin Film Solar Concentrators PI: Gani B. Ganapathi (JPLCaltech) Other Contributors: L'Garde: Art Palisoc, Gyula Greschik, Koorosh Gidanian JPL: Bill Nesmith,...

131

Photovoltaics, solar energy materials & thin films-IMRC 2006, Cancun, Mexico: Selected papers  

Science Journals Connector (OSTI)

The International symposium “Photovoltaics, Solar Energy Materials & Thin Films” was held in Cancun, Mexico from 20 to 24 August 2006. More...2 solar cells; and material characterization. A good...2 and the devic...

Xavier Mathew

2007-11-01T23:59:59.000Z

132

Semiconductor Nanocrystals as Luminescent Down-Shifting Layers To Enhance the Efficiency of Thin-Film CdTe/CdS and Crystalline Si Solar Cells  

Science Journals Connector (OSTI)

A commonly used thin-film CdTe/CdS solar cell is transparent to photons with energies below the bandgap energy, and an additional portion of sunlight is lost because of absorption of high-energy UV photons in the CdS buffer layer. ... Wu, S.; Dou, J.; Zhang, J.; Zhang, S.A Simple and Economical One-Pot Method to Synthesize High-Quality Water Soluble CdTe QDs J. Mater. ...

Sergii Kalytchuk; Shuchi Gupta; Olga Zhovtiuk; Aleksandar Vaneski; Stephen V. Kershaw; Huiying Fu; Zhiyong Fan; Eric C. H. Kwok; Chiou-Fu Wang; Wey Yang Teoh; Andrey L. Rogach

2014-01-17T23:59:59.000Z

133

Processing and analysis of polycrystalline thin-film solar cells made from uniform single phase materials  

SciTech Connect

This paper presents processes for producing uniform single phase polycrystalline films of Cu(InGa)Se{sub 2} and CdTe and the analysis of the resulting films and solar cell devices. The first two sections discuss Cu(InGa)Se{sub 2} cells prepared by the selenization of Cu-In-Ga films and of elemental evaporation. The third section describes a CdCl{sub 2} vapor treatment of CdTe that results in uniform large grain films with reduced {ital S} diffusion and reproducible performance. {copyright} {ital 1996 American Institute of Physics.}

Birkmire, R.W.; Hichri, H.; Klenk, R.; Marudachalam, M.; McCandless, B.E.; Phillips, J.E.; Schultz, J.M.; Shafarman, W.N. [Institute of Energy Conversion, Department of Energy, University Center of Excellence for Photovoltaic, Research and Education (National Renewable Energy Laboratory), University of Delaware, Newark, Delaware 19716 (United States)

1996-01-01T23:59:59.000Z

134

(Sr,Ba)(Si,Ge){sub 2} for thin-film solar-cell applications: First-principles study  

SciTech Connect

In order to meet the increasing demand for electric power generation from solar energy conversion, the development of efficient light absorber materials has been awaited. To this end, the electronic and optical properties of advanced alkaline-earth-metals disilicides and digermanides (SrSi{sub 2}, BaSi{sub 2}, SrGe{sub 2}, and BaGe{sub 2}) are studied by means of the density functional theory using HSE06 exchange-correlation energy functional. Our calculations show that all these orthorhombic structured compounds have fundamental indirect band gaps in the range E{sub g} ? 0.89–1.25 eV, which is suitable for solar cell applications. The estimated lattice parameters and band gaps are in good agreement with experiments. Our calculations show that the electronic band structures of all four compounds are very similar except in the vicinity of the ?-point. The valence band of these compounds is made up by Si(Ge)-p states, whereas the conduction band is composed of Sr(Ba)-d states. Their band alignments are carefully determined by estimating the work function of each compound using slab model. The optical properties are discussed in terms of the complex dielectric function ?(?)?=??{sub 1}(?)?+?i?{sub 2}(?). The static and high-frequency dielectric constants are calculated, taking into account the ionic contribution. The absorption coefficient ?(?) demonstrates that a low energy dispersion of the conduction band, which results in a flat conduction band minimum, leads to large optical activity in these compounds. Therefore, alkaline-earth-metals disilicides and digermanides possess great potential as light absorbers for applications in thin-film solar cell technologies.

Kumar, Mukesh, E-mail: Kumar.Mukesh@nims.go.jp, E-mail: mkgarg79@gmail.com [Environmental Remediation Materials Unit, National Institute for Materials Science, Ibaraki 305-0044 (Japan); Umezawa, Naoto [Environmental Remediation Materials Unit, National Institute for Materials Science, Ibaraki 305-0044 (Japan); PRESTO, Japan Science and Technology Agency (JST), 4-1-8 Honcho Kawaguchi, Saitama 332-0012 (Japan); TU-NIMS Joint Research Center, School of Materials Science and Engineering, Tianjin University, 92 Weijin Road, Nankai District, Tianjin (China); Imai, Motoharu [Superconducting Properties Unit, National Institute for Materials Science, Ibaraki 305-0047 (Japan)

2014-05-28T23:59:59.000Z

135

Nanocauliflower like structure of CdS thin film for solar cell photovoltaic applications: In situ tin doping by chemical bath deposition technique  

Science Journals Connector (OSTI)

Abstract We report on surface morphology changes of in situ tin (Sn) doped cadmium sulphide (CdS) thin film nanostructures prepared on a glass substrate using the chemical bath deposition (CBD) technique. Sn-doping in the presence of triethanolammine (TEOA) as complexing agent resulted in the formation of nanocauliflower like structure of CdS thin film. X-ray diffraction (XRD) results indicated that Sn-doped CdS thin films show a hexagonal structure with a preferential orientation growth along the c-axis (0 0 2). The Sn4+ doping markedly influenced on the evolution of the CdS nanostructures, resulting in the formation of nanocracks due to the substitution of Cd2+ ions by larger-than-host Sn4+ ions as well as a drastic increase in electrical conductivity. An improved optical transmittance property was also achieved by the Sn-doping with no considerable change in the energy band gap. Moreover, a large improvement in both electrical conductivity and photosensitivity observed in the Sn-doped CdS thin films suggests that Sn-doping is highly effective for applications as window/buffer layers in future solar cell applications. Structural evolution of cauliflower like nanostructures are also discussed in this paper.

K.C. Wilson; E. Manikandan; M. Basheer Ahamed; B.W. Mwakikunga

2014-01-01T23:59:59.000Z

136

The effect of impurities on the doping and VOC of CdTe/CdS thin film solar cells  

Science Journals Connector (OSTI)

The effect of introducing impurities in CdTe, namely antimony (Sb) and oxygen (O), on the net carrier concentration in CdS/CdTe solar cells and on their open-circuit voltage (VOC) has been investigated. Oxygen was introduced in the CdTe films during the deposition of this layer by the close-spaced sublimation process. The total pressure was held constant at 1330 Pa (N2 and O2). The amount of oxygen was varied by varying its partial pressure. Antimony was introduced into CdTe using a post-deposition diffusion process. Following the deposition of CdTe a thin film (a few nm) of Sb was deposited onto the CdTe surface and subsequently heat-treated to cause in-diffusion of Sb. The temperature and time during the diffusion process were varied in the range of 300–525 °C and 20–160 min respectively. In both instances it was possible to vary (increase) the doping concentration in CdTe. The increase in doping was accompanied by an increase in VOC. However, in all instances the doping in CdTe reached a maximum value, beyond which further increases were not possible leading to saturation in VOC. The highest VOC measured was similar to state-of-the-art values in the range of 800–830 mV, and the highest doping concentration measured was in the 1016 cm? 3 range.

H. Zhao; Alvi Farah; D. Morel; C.S. Ferekides

2009-01-01T23:59:59.000Z

137

NANOCOMPOSITE ENABLED SENSITIZED SOLAR CELL  

E-Print Network (OSTI)

is mostly thin- film solar technology, such as CdTe and CuInimportant. Thin film solar technology such as CIGS (Copper,in all thin-film solar cell technologies is that absorbance

Phuyal, Dibya

2012-01-01T23:59:59.000Z

138

Polycrystalline thin-film cadmium telluride solar cells fabricated by electrodeposition. Annual technical report  

SciTech Connect

During the past year, Colorado School of Mines (CSM) researchers performed systematic studies of the growth and properties of electrodeposition CdS and back-contact formation using Cu-doped ZnTe, with an emphasis on low Cu concentrations. CSM also started to explore the stability of its ZnTe-Cu contacted CdTe solar cells. Researchers investigated the electrodeposition of CdS and its application in fabricating CdTe/CdS solar cells. The experimental conditions they explored in this study were pH from 2.0 to 3.0; temperatures of 80 and 90 C; CdCl{sub 2} concentration of 0.2 M; deposition potential from {minus}550 to {minus}600 mV vs. Ag/AgCl electrode; [Na{sub 2}S{sub 2}O{sub 4}] concentration between 0.005 and 0.05 M. The deposition rate increases with increase of the thiosulfate concentration and decrease of solution pH. Researchers also extended their previous research of ZnTe:Cu films by investigating films doped with low Cu concentrations (< 5 at. %). The low Cu concentration enabled them to increase the ZnTe:Cu post-annealing temperature without causing excessive Cu diffusion into CdTe or formation of secondary phases. The effects of Cu doping concentration and post-deposition annealing temperature on the structural, compositional, and electrical properties of ZnTe were studied systematically using X-ray diffraction, atomic force microscopy, electron microprobe, Hall effect, and conductivity measurements.

Trefny, J.U.; Mao, D. [Colorado School of Mines, Golden, CO (United States). Dept. of Physics

1998-01-01T23:59:59.000Z

139

Polymer and organic solar cells viewed as thin film technologies: What it will take for them to become a success outside academia  

Science Journals Connector (OSTI)

Abstract The polymer and organic solar cell technology is critically presented in the context of other thin film technologies with a specific focus on what it will take to make them a commercial success. The academic success of polymer and organic solar cells far outweigh any other solar cell technology when judging by the number of scientific publications whereas the application of polymer and organic solar cells in real products is completely lacking. This aspect is viewed as a sign of the polymer and organic solar cell field as being more complex and less mature and it raises the question of whether an organic analog to a successful inorganic technology is forcibly needed and indeed whether it is at all worth exploring beyond academia.

Frederik C. Krebs; Mikkel Jørgensen

2013-01-01T23:59:59.000Z

140

Modeling of thin-film solar thermoelectric generators  

E-Print Network (OSTI)

Recent advances in solar thermoelectric generator (STEG) performance have raised their prospect as a potential technology to convert solar energy into electricity. This paper presents an analysis of thin-film STEGs. ...

Weinstein, Lee Adragon

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to obtain the most current and comprehensive results.


141

High Efficiency CdTe and CIGS Thin Film Solar Cells: Highlights...  

Office of Scientific and Technical Information (OSTI)

Technologies, NYCA MiaSole, CA HelioVolt, Tx Solyndra, CA SoloPower, CA Wurth Solar, Germany SULFURCELL, Germany CIS Solartechnik, Germany Solarion, Germany Solibro, Sweden...

142

Research on high-efficiency, single-junction, monolithic, thin-film amorphous silicon solar cells: Annual subcontract report, May 1985 - Jul 1986  

SciTech Connect

A study was undertaken of the optoelectronic properties of amorphous silicon-hydrogen thin films deposited from disilane at high deposition rates. The information derived from this study was used to fabricate amorphous silicon solar cells with efficiencies exceeding 7%. The intrinsic layer of these solar cells was deposited at 15 angstroms/second. Material properties investigated included dark conductivity, photoconductivity, minority carrier diffusion length, and density of states. The solar cells properties characterized were absolute quantum yield and simulated global AM 1.5 efficiencies. Investigations were undertaken utilizing optical and infrared spectroscopy to optimize the microstructures of the intrinsic amorphous silicon. That work was sponsored by the New York State Energy Research and Development Authority. The information was used to optimize the intrinsic layer of amorphous silicon solar cells, resulting in AM 1.5 efficiencies exceeding 7%.

Wiesmann, H.; Dolan, J.; Fricano, G.; Danginis, V.

1987-02-01T23:59:59.000Z

143

Morphology-dependent light trapping in thin-film organic solar cells  

Science Journals Connector (OSTI)

The active layer materials used in organic photovoltaic (OPV) cells often self-assemble into highly ordered morphologies, resulting in significant optical anisotropies. However, the...

Grote, Richard R; Brown, Steven J; Driscoll, Jeffrey B; Osgood, Richard M; Schuller, Jon A

2013-01-01T23:59:59.000Z

144

LOSS ANALYSIS OF BACK-CONTACT BACK-JUNCTION THIN-FILM MONOCRYSTALLINE SILICON SOLAR CELLS  

E-Print Network (OSTI)

- dimensional finite element modeling with a resistance network simulation. The simulated and measured current of the best cell with 13.5 % efficiency is the high saturation current density at the metal-silicon interface significance of various loss mechan- isms. This analysis is the purpose of this contribution. Standard

145

Photovoltaic Polycrystalline Thin-Film Cell Basics | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Polycrystalline Thin-Film Cell Basics Polycrystalline Thin-Film Cell Basics Photovoltaic Polycrystalline Thin-Film Cell Basics August 20, 2013 - 2:36pm Addthis Polycrystalline thin-film cells are made of many tiny crystalline grains of semiconductor materials. The materials used in these cells have properties that are different from those of silicon. Thin-film cells have many advantages over their thick-film counterparts. For example, they use much less material. The cell's active area is usually only 1 to 10 micrometers thick, whereas thick films typically are 100 to 300 micrometers thick. Also, thin-film cells can usually be manufactured in a large-area process, which can be an automated, continuous production process. Finally, they can be deposited on flexible substrate materials. The term thin film comes from the method used to deposit the film, not from

146

Manipulating hybrid structures of polymer/a-Si for thin film solar cells  

SciTech Connect

A series of uniform polymer/amorphous silicon hybrid structures have been fabricated by means of solution-casting for polymer and radio frequency excited plasma enhanced chemical vapour deposition for amorphous silicon (a-Si:H). Poly(3,4-ethylene dioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) functioned as a photoactive donor, while the silicon layer acted as an acceptor. It is found that matching the hole mobility of the polymer to the electron mobility of amorphous silicon is critical to improve the photovoltaic performance from hybrid cells. A three-layer p-i-n structure of ITO/PEDOT:PSS(200?nm)/i-Si(450?nm)/n-Si(200?nm)/Al with a power conversion efficiency of 4.78% under a standard test condition was achieved.

Peng, Ying; He, Zhiqun, E-mail: zhqhe@bjtu.edu.cn, E-mail: J.I.B.Wilson@hw.ac.uk; Zhang, Zhi; Liang, Chunjun [Key Laboratory of Luminescence and Optical Information, Ministry of Education, Institute of Optoelectronic Technology, Beijing Jiaotong University, Beijing 100044 (China); Diyaf, Adel; Ivaturi, Aruna; Wilson, John I. B., E-mail: zhqhe@bjtu.edu.cn, E-mail: J.I.B.Wilson@hw.ac.uk [SUPA, School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS (United Kingdom)

2014-03-10T23:59:59.000Z

147

Cadmium-free junction fabrication process for CuInSe.sub.2 thin film solar cells  

DOE Patents (OSTI)

The present invention provides an economical, simple, dry and controllable semiconductor layer junction forming process to make cadmium free high efficiency photovoltaic cells having a first layer comprised primarily of copper indium diselenide having a thin doped copper indium diselenide n-type region, generated by thermal diffusion with a group II(b) element such as zinc, and a halide, such as chlorine, and a second layer comprised of a conventional zinc oxide bilayer. A photovoltaic device according the present invention includes a first thin film layer of semiconductor material formed primarily from copper indium diselenide. Doping of the copper indium diselenide with zinc chloride is accomplished using either a zinc chloride solution or a solid zinc chloride material. Thermal diffusion of zinc chloride into the copper indium diselenide upper region creates the thin n-type copper indium diselenide surface. A second thin film layer of semiconductor material comprising zinc oxide is then applied in two layers. The first layer comprises a thin layer of high resistivity zinc oxide. The second relatively thick layer of zinc oxide is doped to exhibit low resistivity.

Ramanathan, Kannan V. (Lakewood, CA); Contreras, Miguel A. (Golden, CA); Bhattacharya, Raghu N. (Littleton, CA); Keane, James (Lakewood, CA); Noufi, Rommel (Golden, CA)

1999-01-01T23:59:59.000Z

148

CdS quantum dot sensitized nanocrystalline Gd-doped TiO2 thin films for photoelectrochemical solar cells  

Science Journals Connector (OSTI)

CdS quantum dot sensitized Gd-doped TiO2 nanocrystalline thin films have been prepared by chemical method. X-ray diffraction analysis reveals that TiO2 and Gd-doped TiO2...nanocrystalline thin films are of anatas...

A. Ranjitha; N. Muthukumarasamy…

2013-08-01T23:59:59.000Z

149

Theoretical Analysis of Effects of Deep Level, Back Contact, and Absorber Thickness on Capacitance-Voltage Profiling of CdTe Thin-Film Solar Cells  

SciTech Connect

The apparent carrier density profile measured by the capacitance-voltage technique in CdTe thin-film solar cells frequently displays a distinctive U-shape. We show that, even assuming a uniform carrier density, such a U-shape may arise from deep levels, a non-ohmic back-contact, and a thin absorber, which are commonly present in practical CdTe thin-film solar cells. A thin CdTe absorber contributes to the right branch of the U-shape due to a punch-through effect at reverse or zero biases, when the CdTe absorber is nearly fully depleted. A rectifying back-contact contributes to both branches of the U-shape due to voltage sharing with the front junction under a forward bias and early punch-through under a reverse bias. Deep levels contribute to the right branch, but also raise the bottom of the U-shape, leading to an overestimate of carrier density.

Li, J. V.; Halverson, A. F.; Sulima, O. V.; Bansal, S.; Burst, J. M.; Barnes, T. M.; Gessert, T. A.; Levi, D. H.

2012-05-01T23:59:59.000Z

150

Predictive Modeling for Glass-Side Laser Scribing of Thin Film Photovoltaic Cells  

E-Print Network (OSTI)

:F, CdTe, solar cell INTRODUCTION Thin-film solar cell is a promising technology to achieve in a large-area solar cell. Quality of such scribing contributes to the overall quality and efficiency of the solar cell and therefore predictive capabilities of the process are essential. Limited numerical work

Yao, Y. Lawrence

151

Improvement of CIGS thin-film solar cell performance by optimization of Zn(O,S) buffer layer parameters  

Science Journals Connector (OSTI)

The effects of Zn(O,S) buffer layer parameters on CuInGaSe (CIGS) cell performance are investigated using a physically based solar cell model. The key issue for CIGS solar cells is to remove destructive effec...

Samaneh Sharbati; Sayyed Hossein Keshmiri; J. Tyler McGoffin…

2014-10-01T23:59:59.000Z

152

Photovoltaic Single-Crystalline, Thin-Film Cell Basics | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Single-Crystalline, Thin-Film Cell Basics Single-Crystalline, Thin-Film Cell Basics Photovoltaic Single-Crystalline, Thin-Film Cell Basics August 20, 2013 - 2:50pm Addthis Single-crystalline thin films are made from gallium arsenide (GaAs), a compound semiconductor that is a mixture of gallium and arsenic. Gallium arsenide (GaAs) is a compound semiconductor, a mixture of gallium and arsenic. Gallium is a byproduct of the smelting of other metals, notably aluminum and zinc, and it is rarer than gold. Arsenic is not rare, but it is poisonous. Gallium arsenide has been developed for use in solar cells at about the same time that it has been developed for light-emitting diodes, lasers, and other electronic devices that use light. GaAs solar cells offer several benefits: The GaAs bandgap is 1.43 eV-nearly ideal for single-junction solar

153

Optical and electrical properties study of sol-gel derived Cu{sub 2}ZnSnS{sub 4} thin films for solar cells  

SciTech Connect

The fabrication of environmental-friendly Cu{sub 2}ZnSnS{sub 4} (CZTS) thin films with pure kesterite phase is always a challenge to researchers in the field of solar cells. We introduce a simple non-vacuum sol-gel method to fabricate kesterite CZTS films. Ethylenediamine is used as the chelating agent and stabilizer and plays an important role in preparing stable precursor. X-ray diffraction, Raman and scanning electron microscopy studies suggest that the microstructure and optical properties of CZTS films depend strongly on annealing temperatures. The temperature dependence of conductivity of 500?°C annealed CZTS film shows that the Mott law dominates in the low temperature region and thermionic emission is predominant at high temperatures.

Guo, B. L.; Liu, X. J.; Li, A. D., E-mail: wcliu@nju.edu.cn, E-mail: adli@nju.edu.cn [National Laboratory of Solid State Microstructures, College of Engineering and Applied Science, Nanjing University, Nanjing 210093 (China); Chen, Y. H. [National Laboratory of Solid State Microstructures, Photovoltaic Engineering Center, Nanjing University, Nanjing 210093 (China); Liu, W. C., E-mail: wcliu@nju.edu.cn, E-mail: adli@nju.edu.cn [National Laboratory of Solid State Microstructures, College of Engineering and Applied Science, Nanjing University, Nanjing 210093 (China); National Laboratory of Solid State Microstructures, Photovoltaic Engineering Center, Nanjing University, Nanjing 210093 (China)

2014-09-15T23:59:59.000Z

154

Modeling of capacitance transients of thin-film solar cells: A valuable tool to gain information on perturbing layers or interfaces  

SciTech Connect

Thin-film electronic and photovoltaic devices often comprise, in addition to the anticipated p-n junctions, additional non-ideal ohmic contacts between layers. This may give rise to additional signals in capacitance spectroscopy techniques that are not directly related to defects in the structure. In this paper, we present a fitting algorithm for transient signals arising from such an additional junction. The fitting results are in excellent agreement with the diode characteristics extracted from static measurements on individual components. Finally, the algorithm is applied for determining the barriers associated with anomalous signals reported for selected CuIn{sub 1–x}Ga{sub x}Se{sub 2} and CdTe solar cells.

Lauwaert, Johan, E-mail: Johan.Lauwaert@UGent.be; Van Puyvelde, Lisanne; Vrielinck, Henk [Department of Solid State Sciences, Ghent University, Krijgslaan 281-S1, 9000 Gent (Belgium); Lauwaert, Jeroen; Thybaut, Joris W. [Laboratory for Chemical Technology (LCT), Ghent University, Krijgslaan 281-S5, 9000 Gent (Belgium)

2014-02-03T23:59:59.000Z

155

Oxidation of In2S3 films to synthetize In2S3(1-x)O3x thin films as a buffer layer in solar cells  

E-Print Network (OSTI)

Oxidation of In2S3 films to synthetize In2S3(1-x)O3x thin films as a buffer layer in solar cells S layers for solar cells. PACS : 68.55.ag Semiconductors, 68.55.J Morphology of films , 68.55.Nq the oxidation occurs is strongly dependent on the texture of deposited films. As-grown films deposited

Boyer, Edmond

156

Electron and hole drift mobility measurements on thin film CdTe solar cells Qi Long, Steluta A. Dinca, E. A. Schiff, Ming Yu, and Jeremy Theil  

E-Print Network (OSTI)

(2004); 10.1063/1.1645322 Cathodoluminescence of Cu diffusion in CdTe thin films for CdTe/CdS solar://scitation.aip.org/content/aip/journal/apl/105/4?ver=pdfcov Published by the AIP Publishing Articles you may be interested in Copper-doped Cd

Schiff, Eric A.

157

Enhancement of current collection in epitaxial lift-off InAs/GaAs quantum dot thin film solar cell and concentrated photovoltaic study  

SciTech Connect

We report the fabrication of a thin film InAs/GaAs quantum dot solar cell (QD cell) by applying epitaxial lift-off (ELO) approach to the GaAs substrate. We confirmed significant current collection enhancement (?0.91?mA/cm{sup 2}) in the ELO-InAs QD cell within the wavelength range of 700?nm–900?nm when compared to the ELO-GaAs control cell. This is almost six times of the sub-GaAs bandgap current collection (?0.16?mA/cm{sup 2}) from the wavelength range of 900?nm and beyond, we also confirmed the ELO induced resonance cavity effect was able to increase the solar cell efficiency by increasing both the short circuit current and open voltage. The electric field intensity of the resonance cavity formed in the ELO film between the Au back reflector and the GaAs front contact layer was analyzed in detail by finite-differential time-domain (FDTD) simulation. We found that the calculated current collection enhancement within the wavelength range of 700?nm–900?nm was strongly influenced by the size and shape of InAs QD. In addition, we performed concentrated light photovoltaic study and analyzed the effect of intermediate states on the open voltage under varied concentrated light intensity for the ELO-InAs QD cell.

Sogabe, Tomah, E-mail: sogabe@mbe.rcast.u-tokyo.ac.jp; Shoji, Yasushi; Tamayo, Efrain; Okada, Yoshitaka [Research Center for Advanced Science and Technology (RCAST), The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8504 (Japan); Mulder, Peter; Schermer, John [Institute for Molecules and Materials, Radboud University Nijmegen, Heyendaalseweg 135, 6525 AJ Nijmegen (Netherlands)

2014-09-15T23:59:59.000Z

158

Multi-resonant silver nano-disk patterned thin film hydrogenated amorphous silicon solar cells for Staebler-Wronski effect compensation  

E-Print Network (OSTI)

We study polarization independent improved light trapping in commercial thin film hydrogenated amorphous silicon (a-Si:H) solar photovoltaic cells using a three-dimensional silver array of multi-resonant nano-disk structures embedded in a silicon nitride anti-reflection coating (ARC) to enhance optical absorption in the intrinsic layer (i-a-Si:H) for the visible spectrum for any polarization angle. Predicted total optical enhancement (OE) in absorption in the i-a-Si:H for AM-1.5 solar spectrum is 18.51% as compared to the reference, and producing a 19.65% improvement in short-circuit current density (JSC) over 11.7 mA/cm2 for a reference cell. The JSC in the nano-disk patterned solar cell (NDPSC) was found to be higher than the commercial reference structure for any incident angle. The NDPSC has a multi-resonant optical response for the visible spectrum and the associated mechanism for OE in i-a-Si:H layer is excitation of Fabry-Perot resonance facilitated by surface plasmon resonances. The detrimental Staebl...

Vora, Ankit; Pearce, Joshua M; Bergstrom, Paul L; Güney, Durdu Ö

2014-01-01T23:59:59.000Z

159

Impact of environmental conditions on the chemical surface properties of Cu(In,Ga)(S,Se){sub 2} thin-film solar cell absorbers  

SciTech Connect

Environmentally driven aging effects play a crucial role in thin-film solar cells based on Cu(In,Ga)(S,Se){sub 2}, both for long-term stability and short air exposure during production. For a better understanding of such effects, Cu(In,Ga)(S,Se){sub 2} absorber surfaces were investigated by x-ray photoelectron and Auger electron spectroscopy after exposure to different environmental conditions. Identical absorbers were stored in a nitrogen atmosphere, in damp heat, and under ambient conditions for up to 14 days. We find varying degrees of diffusion of sulfur, copper, and sodium towards the surface, with potential impact on the electronic surface structure (band gap) and the properties of the interface to a buffer layer in a solar cell device. Furthermore, we observe an oxidation (in decreasing order) of indium, copper, and selenium (but no oxidation of sulfur). And finally, varying amounts of carbon- and oxygen-containing adsorbates are found. In particular, the findings suggest that, for ambient air exposure, sodium carbonate is formed at the surface.

Hauschild, D., E-mail: dirk.hauschild@physik.uni-wuerzburg.de, E-mail: l.weinhardt@kit.edu; Meyer, F. [Experimental Physics VII, University of Würzburg, Am Hubland, 97074 Würzburg (Germany); Pohlner, S.; Lechner, R.; Dietmüller, R.; Palm, J. [AVANCIS GmbH and Co. KG, Otto-Hahn-Ring 6, 81739 Munich (Germany); Heske, C. [Institute for Photon Science and Synchrotron Radiation, Karlsruhe Institute of Technology (KIT), Hermann-v.-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen (Germany); ANKA Synchrotron Radiation Facility, Karlsruhe Institute of Technology (KIT), Hermann-v.-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen (Germany); Department of Chemistry, University of Nevada, Las Vegas (UNLV), 4505 Maryland Parkway, Las Vegas, Nevada 89154-4003 (United States); Institute for Chemical Technology and Polymer Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstr. 18/20, 76128 Karlsruhe (Germany); Weinhardt, L., E-mail: dirk.hauschild@physik.uni-wuerzburg.de, E-mail: l.weinhardt@kit.edu [Institute for Photon Science and Synchrotron Radiation, Karlsruhe Institute of Technology (KIT), Hermann-v.-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen (Germany); ANKA Synchrotron Radiation Facility, Karlsruhe Institute of Technology (KIT), Hermann-v.-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen (Germany); Department of Chemistry, University of Nevada, Las Vegas (UNLV), 4505 Maryland Parkway, Las Vegas, Nevada 89154-4003 (United States); Reinert, F. [Experimental Physics VII, University of Würzburg, Am Hubland, 97074 Würzburg (Germany); Karlsruhe Institute of Technology (KIT), Gemeinschaftslabor für Nanoanalytik, 76021 Karlsruhe (Germany)

2014-05-14T23:59:59.000Z

160

Flexible Solar-Energy Harvesting System on Plastic with Thin-film LC Oscillators Operating Above ft for  

E-Print Network (OSTI)

Flexible Solar-Energy Harvesting System on Plastic with Thin-film LC Oscillators Operating Above ft- This paper presents an energy-harvesting system consisting of amorphous-silicon (a-Si) solar cells and thin of the energy-harvesting system. The solar module consists of solar cells in series operating at an output

Note: This page contains sample records for the topic "thin-film solar cell" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

NANOCOMPOSITE ENABLED SENSITIZED SOLAR CELL  

E-Print Network (OSTI)

in all thin-film solar cell technologies is that absorbancecells. These emerging solar cell technologies have undergonethe various solar cell technologies and their progress as

Phuyal, Dibya

2012-01-01T23:59:59.000Z

162

Research on high-efficiency, single-junction, monolithic, thin-film amorphous silicon solar cells: Phase II annual subcontract report, 1 January 1985--31 January 1986  

SciTech Connect

This report presents results of the second phase of research on high-efficiency, single-junction, monolithic, thin-film a-Si solar cells. Five glow-discharge deposition systems, including a new in-line, multichamber system, were used to grow both doped and undoped a-Si:H. A large number of silane and disilane gas cylinders were analyzed with a gas chromatography/mass spectroscopy system. Strong correlations were found between the breakdown voltage, the deposition rate, the diffusion length, and the conversion efficiency for varying cathode-anode separations in a DC glow-discharge deposition mode. Tin oxide films were grown by chemical vapor deposition with either tetramethyl tin (TMT) or tin tetrachloride (TTC). The best were grown with TMT, but TTC films had a more controlled texture for light trapping and provided a better contact to the p-layer. The best results were obtained with 7059 glass substrates. Efficiencies as high as 10.86% were obtained in p-i-n cells with superlattice p-layers and as high as 10.74% in cells with both superlattice p- and n-layers. Measurements showed that the boron-doping level in the p-layer can strongly affect transport in the i-layer, which can be minimized by reactive flushing before i-layer deposition. Stability of a-Si:H cells is improved by light doping. 51 refs., 64 figs., 21 tabs.

Carlson, D.E.; Ayra, R.R.; Bennett, M.S.; Catalano, A.; D'Aiello, R.V.; Dickson, C.R.; McVeigh, J.; Newton, J.; O'Dowd, J.; Oswald, R.S.; Rajan, K.

1988-09-01T23:59:59.000Z

163

Solar Energy Materials & Solar Cells 91 (2007) 17261732 Optical and structural properties of Ta2O5CeO2 thin films  

E-Print Network (OSTI)

Solar Energy Materials & Solar Cells 91 (2007) 1726­1732 Optical and structural properties of Ta2O5

Thirumalai, Devarajan

164

Correlations of Capacitance-Voltage Hysteresis with Thin-Film CdTe Solar Cell Performance During Accelerated Lifetime Testing  

SciTech Connect

In this paper we present the correlation of CdTe solar cell performance with capacitance-voltage hysteresis, defined presently as the difference in capacitance measured at zero-volt bias when collecting such data with different pre-measurement bias conditions. These correlations were obtained on CdTe cells stressed under conditions of 1-sun illumination, open-circuit bias, and an acceleration temperature of approximately 100 degrees C.

Albin, D.; del Cueto, J.

2011-03-01T23:59:59.000Z

165

Method of fabricating high-efficiency Cu(In,Ga)(SeS).sub.2 thin films for solar cells  

DOE Patents (OSTI)

A process for producing a slightly Cu-poor thin film of Cu(In,Ga)(Se,S).sub.2 comprises depositing a first layer of (In,Ga).sub.x (Se,S).sub.y followed by depositing just enough Cu+(Se,S) or Cu.sub.x (Se,S) to produce the desired slightly Cu-poor material. In a variation, most, but not all, (about 90 to 99%) of the (In,Ga).sub.x (Se,S).sub.y is deposited first, followed by deposition of all the Cu+(Se,S) or Cu.sub.x (Se,S) to go near stoichiometric, possibly or even preferably slightly Cu-rich, and then in turn followed by deposition of the remainder (about 1 to 10%) of the (In,Ga).sub.x (Se,S).sub.y to end with a slightly Cu-poor composition. In yet another variation, a small portion (about 1 to 10%) of the (In,Ga).sub.x (Se,S).sub.y is first deposited as a seed layer, followed by deposition of all of the Cu+(Se,S) or Cu.sub.x (Se,S) to make a very Cu-rich mixture, and then followed deposition of the remainder of the (In,Ga).sub.x (Se,S).sub.y to go slightly Cu-poor in the final Cu(In,Ga)(Se,S).sub.2 thin film.

Noufi, Rommel (Golden, CO); Gabor, Andrew M. (Boulder, CO); Tuttle, John R. (Denver, CO); Tennant, Andrew L. (Denver, CO); Contreras, Miguel A. (Golden, CO); Albin, David S. (Denver, CO); Carapella, Jeffrey J. (Evergreen, CO)

1995-01-01T23:59:59.000Z

166

Nanostructured thin films for solid oxide fuel cells  

E-Print Network (OSTI)

The goals of this work were to synthesize high performance perovskite based thin film solid oxide fuel cell (TF-SOFC) cathodes by pulsed laser deposition (PLD), to study the structural, electrical and electrochemical properties of these cathodes...

Yoon, Jongsik

2009-05-15T23:59:59.000Z

167

Sputtered Nickel Oxide Thin Film for Efficient Hole Transport Layer in Polymer-Fullerene Bulk-Heterojunction Organic Solar Cell  

SciTech Connect

Bulk-heterojunction (BHJ) organic photovoltaics (OPV) are very promising thin film renewable energy conversion technologies due to low production cost by high-throughput roll-to-roll manufacturing, an expansive list of compatible materials, and flexible device fabrication. An important aspect of OPV device efficiency is good contact engineering. The use of oxide thin films for this application offers increased design flexibility and improved chemical stability. Here we present our investigation of radio frequency magnetron sputtered nickel oxide (NiO{sub x}) deposited from oxide targets as an efficient, easily scalable hole transport layer (HTL) with variable work-function, ranging from 4.8 to 5.8 eV. Differences in HTL work-function were not found to result in statistically significant changes in open circuit voltage (V{sub oc}) for poly(3-hexylthiophene):[6,6]-phenyl-C{sub 61}-butyric acid methyl ester (P3HT:PCBM) BHJ device. Ultraviolet photoemission spectroscopy (UPS) characterization of the NiO{sub x} film and its interface with the polymer shows Fermi level alignment of the polymer with the NiO{sub x} film. UPS of the blend also demonstrates Fermi level alignment of the organic active layer with the HTL, consistent with the lack of correlation between V{sub oc} and HTL work-function. Instead, trends in j{sub sc}, V{sub oc}, and thus overall device performance are related to the surface treatment of the HTL prior to active layer deposition through changes in active layer thickness.

Widjonarko, N. E.; Ratcliff, E. L.; Perkins, C. L.; Sigdel, A. K.; Zakutayev, A.; Ndione, P. F.; Gillaspie, D. T.; Ginley, D. S.; Olson, D. C.; Berry, J. J.

2012-03-01T23:59:59.000Z

168

Integrated All-silicon Thin-film Power Electronics on Flexible Sheets For Ubiquitous Wireless Charging Stations based on Solar-energy Harvesting  

E-Print Network (OSTI)

into wireless charging stations. In this work, we combine the thin-film circuits with flexible solar cellsIntegrated All-silicon Thin-film Power Electronics on Flexible Sheets For Ubiquitous Wireless Charging Stations based on Solar-energy Harvesting Liechao Huang, Warren Rieutort-Louis, Yingzhe Hu, Josue

169

Effect of localized states on the reciprocity between quantum efficiency and electroluminescence in Cu(In,Ga)Se2 and Si thin-film solar cells  

Science Journals Connector (OSTI)

Abstract We present the electroluminescence and quantum efficiency of three different types of thin-film solar cells based on absorbers made from Cu(In,Ga)Se2 as well as from ?c-Si:H and a-Si:H. Simulations of our experimental results show that the main contribution to the electroluminescence spectrum originates from band-to-tail transitions in the case of Cu(In,Ga)Se2, from tail-to-tail transitions in ?c-Si:H, and from tail-to-tail as well as from band-to-midgap-defect transitions in a-Si:H. By comparing the electroluminescence with the quantum efficiency, we analyze the effect of localized states on the optoelectronic reciprocity relation in the three material systems. The relatively steep band–tail density of states in Cu(In,Ga)Se2 is compatible with the reciprocity relation at room temperature while the shallower band–tail density of states in ?c-Si:H and the deep mid-gap defect states in a-Si:H lead to substantial deviations from the reciprocity.

Thomas Christian Mathias Müller; Bart Elger Pieters; Thomas Kirchartz; Reinhard Carius; Uwe Rau

2014-01-01T23:59:59.000Z

170

Microcrystalline silicon germanium: An attractive bottom-cell material for thin-film silicon-based tandem-solar-cells  

SciTech Connect

The authors have prepared hydrogenated microcrystalline silicon germanium by plasma enhanced CVD of a mixture of silane and germane gas diluted with hydrogen. The growth conditions have been systematically controlled to obtain large ({approximately}400{angstrom}) crystallites of silicon-germanium as observed using Raman scattering and x-ray diffraction. The dangling bond (germanium) density has been reduced to <5 x 10{sup 16} cm{sup {minus}3} at low substrate temperatures ({approximately}150 C). The optical absorption spectra of the 50% Ge containing material is red-shifted compared to microcrystalline silicon, consistent with a reduction of the indirect optical gap to 0.9 eV. Schottky type cells fabricated using Au on an n{sup +} crystalline silicon substrate confirm that the long wavelength response is remarkably enhanced in this material.

Ganguly, Gautam; Ikeda, Toru; Kajiwara, Kei; Matduda, Akihisa

1997-07-01T23:59:59.000Z

171

Use of 2nd and 3rd Level Correlation Analysis for Studying Degradation in Polycrystalline Thin-Film Solar Cells  

SciTech Connect

The correlation of stress-induced changes in the performance of laboratory-made CdTe solar cells with various 2nd and 3rd level metrics is discussed. The overall behavior of aggregated data showing how cell efficiency changes as a function of open-circuit voltage (Voc), short-circuit current density (Jsc), and fill factor (FF) is explained using a two-diode, PSpice model in which degradation is simulated by systematically changing model parameters. FF shows the highest correlation with performance during stress, and is subsequently shown to be most affected by shunt resistance, recombination and in some cases voltage-dependent collection. Large decreases in Jsc as well as increasing rates of Voc degradation are related to voltage-dependent collection effects and catastrophic shunting respectively. Large decreases in Voc in the absence of catastrophic shunting are attributed to increased recombination. The relevance of capacitance-derived data correlated with both Voc and FF is discussed.

Albin, D. S.; del Cueto, J. A.; Demtsu, S. H.; Bansal, S.

2011-03-01T23:59:59.000Z

172

Method for producing textured substrates for thin-film photovoltaic cells  

DOE Patents (OSTI)

The invention pertains to the production of ceramic substrates used in the manufacture of thin-film photovoltaic cells used for directly converting solar energy to electrical energy. Elongated ribbon-like sheets of substrate precursor containing a mixture of ceramic particulates, a binder, and a plasticizer are formed and then while green provided with a mechanically textured surface region used for supporting the thin film semiconductor of the photovoltaic cell when the sheets of the substrate precursor are subsequently cut into substrate-sized shapes and then sintered. The textured surface pattern on the substrate provides enhanced light trapping and collection for substantially increasing the solar energy conversion efficiency of thin-film photovoltaic cells.

Lauf, Robert J. (Oak Ridge, TN)

1994-01-01T23:59:59.000Z

173

Method for producing textured substrates for thin-film photovoltaic cells  

DOE Patents (OSTI)

The invention pertains to the production of ceramic substrates used in the manufacture of thin-film photovoltaic cells used for directly converting solar energy to electrical energy. Elongated ribbon-like sheets of substrate precursor containing a mixture of ceramic particulates, a binder, and a plasticizer are formed and then while green provided with a mechanically textured surface region used for supporting the thin film semiconductor of the photovoltaic cell when the sheets of the substrate precursor are subsequently cut into substrate-sized shapes and then sintered. The textured surface pattern on the substrate provides enhanced light trapping and collection for substantially increasing the, solar energy conversion efficiency of thin-film photovoltaic cells.

Lauf, Robert J. (Oak Ridge, TN)

1996-01-01T23:59:59.000Z

174

Method for producing textured substrates for thin-film photovoltaic cells  

DOE Patents (OSTI)

The invention pertains to the production of ceramic substrates used in the manufacture of thin-film photovoltaic cells used for directly converting solar energy to electrical energy. Elongated ribbon-like sheets of substrate precursor containing a mixture of ceramic particulates, a binder, and a plasticizer are formed and then while green provided with a mechanically textured surface region used for supporting the thin film semiconductor of the photovoltaic cell when the sheets of the substrate precursor are subsequently cut into substrate-sized shapes and then sintered. The textured surface pattern on the substrate provides enhanced light trapping and collection for substantially increasing the solar energy conversion efficiency of thin-film photovoltaic cells. 4 figures.

Lauf, R.J.

1994-04-26T23:59:59.000Z

175

Method for producing textured substrates for thin-film photovoltaic cells  

DOE Patents (OSTI)

The invention pertains to the production of ceramic substrates used in the manufacture of thin-film photovoltaic cells used for directly converting solar energy to electrical energy. Elongated ribbon-like sheets of substrate precursor containing a mixture of ceramic particulates, a binder, and a plasticizer are formed and then while green provided with a mechanically textured surface region used for supporting the thin film semiconductor of the photovoltaic cell when the sheets of the substrate precursor are subsequently cut into substrate-sized shapes and then sintered. The textured surface pattern on the substrate provides enhanced light trapping and collection for substantially increasing the, solar energy conversion efficiency of thin-film photovoltaic cells. 4 figs.

Lauf, R.J.

1996-04-02T23:59:59.000Z

176

Amorphous thin films for solar-cell applications. Technical progress report, 11 October 1980 to 15 January 1981  

SciTech Connect

Progress has been ahead of planned expectations in three instances: (a) achievement of 4 mA/cm/sup 2/, short circuit current density in a MIS structure solar cell under AM1 illumination; (b) fabrication of large area (4 cm/sup 2/) MIS cells with external J/sub sc/ > 3 mA/cm/sup 2/; and (c) deposition of p/sup +/ layers by B/sub 2/H/sub 6/ gas phase doping. A program status table is included. Reproducible n layers are now routinely deposited by sputtering in Ar, H/sub 2/, and PH/sub 3/ gases. The major remaining obstacle to the goal of a 3.5% cell is the deposition of a quality i-layer. Although information deduced from infrared absorption and Raman data indicates that most of the hydrogen is bonded in the SiH configuration, the photoconductivity of the intrinsic material requires marked improvement. Two forms of magnetron sputtering, planar and cylindrical, are being exploited. The planar deposition system has the advantage that experimental costs are low; the cylindrical system is easily scalable to large product throughput. Schematic illustrations of the two systems and descriptions of apparatus modifications incorporated are included.

Jonath, A.D.; Anderson, W.W.; Crowley, J.L.; MacMillan H.F. Jr.; Thornton, J.A.

1981-02-20T23:59:59.000Z

177

Solar Thin Films Inc formerly American United Global Inc | Open Energy  

Open Energy Info (EERE)

Films Inc formerly American United Global Inc Films Inc formerly American United Global Inc Jump to: navigation, search Name Solar Thin Films Inc (formerly American United Global Inc) Place New York, New York Zip 10038 Sector Solar Product A US-based solar manufacturing equipment supplier. References Solar Thin Films Inc (formerly American United Global Inc)[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Solar Thin Films Inc (formerly American United Global Inc) is a company located in New York, New York . References ↑ "Solar Thin Films Inc (formerly American United Global Inc)" Retrieved from "http://en.openei.org/w/index.php?title=Solar_Thin_Films_Inc_formerly_American_United_Global_Inc&oldid=351338

178

Solar Energy Materials & Solar Cells 92 (2008) 821829 Modeling the optical properties of WO3 and WO3SiO2 thin films  

E-Print Network (OSTI)

Solar Energy Materials & Solar Cells 92 (2008) 821­829 Modeling the optical properties of WO3 the optical response of the films in the near-UV and visible region: two interband transitions for energies E

Thirumalai, Devarajan

179

SunShot Initiative: Thin Film Photovoltaics Research  

NLE Websites -- All DOE Office Websites (Extended Search)

Thin Film Photovoltaics Research Thin Film Photovoltaics Research to someone by E-mail Share SunShot Initiative: Thin Film Photovoltaics Research on Facebook Tweet about SunShot Initiative: Thin Film Photovoltaics Research on Twitter Bookmark SunShot Initiative: Thin Film Photovoltaics Research on Google Bookmark SunShot Initiative: Thin Film Photovoltaics Research on Delicious Rank SunShot Initiative: Thin Film Photovoltaics Research on Digg Find More places to share SunShot Initiative: Thin Film Photovoltaics Research on AddThis.com... Concentrating Solar Power Photovoltaics Research & Development Crystalline Silicon Thin Films Multijunctions Organic Photovoltaics Dye-Sensitized Solar Cells Competitive Awards Systems Integration Balance of Systems Thin Film Photovoltaics Research The U.S. Department of Energy (DOE) supports research and development of

180

Overview and Challenges of Thin Film Solar Electric Technologies  

NLE Websites -- All DOE Office Websites (Extended Search)

and Challenges of Thin and Challenges of Thin Film Solar Electric Technologies H.S. Ullal Presented at the World Renewable Energy Congress X and Exhibition 2008 Glasgow, Scotland, United Kingdom July 19-25, 2008 Conference Paper NREL/CP-520-43355 December 2008 NOTICE The submitted manuscript has been offered by an employee of the Alliance for Sustainable Energy, LLC (ASE), a contractor of the US Government under Contract No. DE-AC36-08-GO28308. Accordingly, the US Government and ASE retain a nonexclusive royalty-free license to publish or reproduce the published form of this contribution, or allow others to do so, for US Government purposes. This report was prepared as an account of work sponsored by an agency of the United States government. Neither the United States government nor any agency thereof, nor any of their employees, makes any

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181

New GE Plant to Produce Thin Film PV Solar Panels Based on NREL Technology  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

New GE Plant to Produce Thin Film PV Solar Panels Based on NREL New GE Plant to Produce Thin Film PV Solar Panels Based on NREL Technology New GE Plant to Produce Thin Film PV Solar Panels Based on NREL Technology April 22, 2011 - 10:17am Addthis Photo courtesy of General Electric Photo courtesy of General Electric Minh Le Minh Le Program Manager, Solar Program Earlier this month, General Electric announced plans to enter the global marketplace for solar photovoltaic (PV) panels in a big way - and to do it, they will be using technology pioneered at the Department of Energy's National Renewable Energy Lab (NREL). The record-breaking Cadmium-Telluride (CdTe) thin film photovoltaic technology GE has chosen for its solar panels was originally developed more than a decade ago by a team of scientists led by NREL's Xuanzhi Wu, and

182

Low work function, stable thin films  

DOE Patents (OSTI)

Generation of low work function, stable compound thin films by laser ablation. Compound thin films with low work function can be synthesized by simultaneously laser ablating silicon, for example, and thermal evaporating an alkali metal into an oxygen environment. For example, the compound thin film may be composed of Si/Cs/O. The work functions of the thin films can be varied by changing the silicon/alkali metal/oxygen ratio. Low work functions of the compound thin films deposited on silicon substrates were confirmed by ultraviolet photoelectron spectroscopy (UPS). The compound thin films are stable up to 500.degree. C. as measured by x-ray photoelectron spectroscopy (XPS). Tests have established that for certain chemical compositions and annealing temperatures of the compound thin films, negative electron affinity (NEA) was detected. The low work function, stable compound thin films can be utilized in solar cells, field emission flat panel displays, electron guns, and cold cathode electron guns.

Dinh, Long N. (Concord, CA); McLean, II, William (Oakland, CA); Balooch, Mehdi (Berkeley, CA); Fehring, Jr., Edward J. (Dublin, CA); Schildbach, Marcus A. (Livermore, CA)

2000-01-01T23:59:59.000Z

183

Creating CZTS Thin Films Via Stacked Metallic CVD and Sulfurization  

E-Print Network (OSTI)

Research, Thin-Film Photovoltaic (PV) Cells Market Analysiscost of photovoltaic systems (such as solar cells) due tosolar cells are created by depositing layers of photovoltaic

Bielecki, Anthony

2013-01-01T23:59:59.000Z

184

Appropriate materials and preparation techniques for polycrystalline-thin-film thermophotovoltaic cells  

Science Journals Connector (OSTI)

Polycrystalline-thin-film thermophotovoltaic (TPV) cells have excellent potential for reducing the cost of TPV generators so as to address the hitherto inaccessible and highly competitive markets such as self-powered gas-fired residential warm air furnaces and energy-efficient electric cars etc. Recent progress in polycrystalline-thin-film solar cells have made it possible to satisfy the diffusion length and intrinsic junction rectification criteria for TPV cells operating at high fluences. Continuous ranges of direct bandgaps of the ternary and pseudoternary compounds such as Hg 1?x Cd x Te Pb 1?x Cd x Te Hg 1?x Zn x Te and Pb 1?x Zn x S cover the region of interest of 0.50–0.75 eV for efficient TPV conversion. Other ternary and pseudoternary compounds which show direct bandgaps in most of or all of the 0.50–0.75 eV range are Pb 1?x Zn x Te Sn 1?x Cd 2x Te 2 Pb 1?x Cd x Se Pb 1?x Zn x Se and Pb 1?x Cd x S . Hg 1?x Cd x Te (with x?0.21 ) has been studied extensively for infrared detectors. PbTe and Pb 1?x Sn x Te have also been studied for infrared detectors. Not much work has been carried out on Hg 1?x Zn x Te thin films. Hg 1?x Cd x Te and Pb 1?x Cd x Te alloys cover a wide range of cut-off wavelengths from the far infrared to the near visible. Acceptors and donors are introduced in these materials by excess non-metal (Te) and excess metal (Hg and Pb) respectively. Extrinsic acceptor impurities are Cu Au and As while and In and Al are donor impurities. Hg 1?x Cd x Te thin films have been deposited by isothermal vapor-phase epitaxy (VPE) liquid phase epitaxy (LPE) hot-wall metalorganic chemical vapor deposition (MOCVD) electrodeposition sputtering molecular beam epitaxy (MBE) laser-assisted evaporation and vacuum evaporation with or without hot-wall enclosure. The challenge in the preparation of Hg 1?x Cd x Te is to provide excess mercury incidence rate to optimize the deposition parameters for enhanced mercury incorporation and to achieve the requisite stoichiometry grain size and doping. MBE and MOCVD techniques have paved the way for obtaining epitaxial Hg 1?x Cd x Te thin films at substrate temperatures of ?180?° C with the desired crystalline perfection stoichiometry and doping without the necessity of further annealing for improving either the crystalline quality or dopant activity. Retaining larger mercury proportions during annealing would require heated enclosures as in isothermal VPE hot-wall technique vacuum evaporation hot-wall MOCVD or close-space sublimation. Pb 1?x Cd x Te thin films can be prepared by magnetron sputtering from cooled Pb 1?x Cd x Te targets on heated substrates. Hot-wall technique is suitable for the deposition of Pb 1?x Cd x Te thin films. Hg 1?x Cd x Te and Pb 1?x Cd x Te TPV cells will benefit from the substantial work on CdTe thin film solar cells. The paper reviews work on thin films of ternary and pseudoternary compounds of interest for TPV conversion and methods of their preparation with a view to choosing the appropriate materials and fabrication techniques for polycrystalline-thin-film TPV cells.

Neelkanth G. Dhere

1997-01-01T23:59:59.000Z

185

The novel usage of spectroscopic ellipsometry for the development of amorphous Si solar cells  

E-Print Network (OSTI)

May 2010 Keywords: a-Si:H Thin film Si solar cell Spectroscopic ellipsometry (SE) a b s t r a c t We analyzed with relation to structural and electrical properties of a-Si:H thin film for solar cell and faster methodology to develop a-Si:H thin film for thin film Si solar cells using SE measurements

Park, Byungwoo

186

The reversal of the laser-beam-induced-current contrast with varying illumination density in a Cu{sub 2}ZnSnSe{sub 4} thin-film solar cell  

SciTech Connect

We apply an array of correlated spatially-resolved techniques, including ?-Raman/photoluminescence/reflectance/laser-beam-induced-current in conjunction with scanning electron microscopy and atomic force microscopy, to study the impact of the microscopic-scale thickness inhomogeneity of CdS layer in a Cu{sub 2}ZnSnSe{sub 4} thin-film solar cell. Thicker CdS regions are found to cause more light reflecting loss thus yield lower external quantum efficiencies and energy conversion efficiencies than the general area. However, these regions show much less efficiency degradation at high illumination intensity, leading to an inversion of laser-beam-induced-current contrast in the area mapping. While improving the CdS layer uniformity can boost the device performance, the finding further points out the possibility of operating thin-film photovoltaic devices based on the similar materials (such as CuInGaSe{sub 2}, CdTe, Cu{sub 2}ZnSn(S,Se){sub 4}) under a substantially higher illumination density for concentrated photovoltaic and photo-detection.

Chen, Qiong; Zhang, Yong, E-mail: yong.zhang@uncc.edu [Department of Electrical and Computer Engineering, and Energy Production and Infrastructure Center (EPIC), The University of North Carolina at Charlotte, Charlotte, North Carolina 28223 (United States)] [Department of Electrical and Computer Engineering, and Energy Production and Infrastructure Center (EPIC), The University of North Carolina at Charlotte, Charlotte, North Carolina 28223 (United States)

2013-12-09T23:59:59.000Z

187

Rapid Deposition Technology Holds the Key for the World's Largest Manufacturer of Thin-Film Solar Modules (Fact Sheet)  

SciTech Connect

First Solar, Inc. has been collaborating with NREL since 1991, advancing its thin-film cadmium telluride solar technology to grow from a startup company to become one of the world's largest manufacturers of solar modules, and the world's largest manufacturer of thin-film solar modules.

Not Available

2013-08-01T23:59:59.000Z

188

Near perfect solar absorption in ultra-thin-film GaAs photonic crystals  

E-Print Network (OSTI)

Near perfect solar absorption in ultra-thin-film GaAs photonic crystals Sergey Eyderman,*a Alexei Deinegaa and Sajeev Johnab We present designs that enable a significant increase of solar absorption­99.5% solar absorption is demonstrated depending on the photonic crystal architecture used and the nature

John, Sajeev

189

Tax Credits Give Thin-Film Solar a Big Boost | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Tax Credits Give Thin-Film Solar a Big Boost Tax Credits Give Thin-Film Solar a Big Boost Tax Credits Give Thin-Film Solar a Big Boost October 18, 2010 - 2:00pm Addthis MiaSolé will expand its capacity to make its thin-film solar panels by more than ten times, thanks to two Recovery Act tax credits.| Photo courtesy of MiaSolé MiaSolé will expand its capacity to make its thin-film solar panels by more than ten times, thanks to two Recovery Act tax credits.| Photo courtesy of MiaSolé Lorelei Laird Writer, Energy Empowers What are the key facts? MiaSolé adding more than ten times its current manufacturing capacity Company expects to double or triple its workforce with expansion Expansion is funded by $101 million in Recovery Act tax credit For MiaSolé, a relative newcomer to the solar energy market, 2010 has been

190

Effects of Cu Diffusion from ZnTe:Cu/Ti Contacts on Carrier Lifetime of CdS/CdTe Thin Film Solar Cells: Preprint  

SciTech Connect

We study the performance of CdS/CdTe thin film PV devices processed with a ZnTe:Cu/Ti contact to investigate how carrier lifetime in the CdTe layer is affected by Cu diffusion from the contact.

Gessert, T. A.; Metzger, W. K.; Asher, S. E.; Young, M. R.; Johnston, S.; Dhere, R. G.; Duda, A.

2008-05-01T23:59:59.000Z

191

FABRICATION AND CHARACTERIZATION OF 3-D ALL POLYMER FLEXIBLE SOLAR CELL  

E-Print Network (OSTI)

....................................................................................3 2 LITERATURE SURVEY ON THIN FILM ANDORGANIC/TANDEM SOLAR CELL........................................................................7 2.3 Thin Film Solar CellFABRICATION AND CHARACTERIZATION OF 3-D ALL POLYMER FLEXIBLE SOLAR CELL _______________ A Thesis

Kassegne, Samuel Kinde

192

Study of molybdenum oxide as a back contact buffer for thin film n-CdS/p-CdTe solar cells.  

E-Print Network (OSTI)

??Back contact improvement is one of the most crucial issues for the realization of highly efficient n-CdS/p-CdTe solar cells. Conventional methods for making a sufficiently… (more)

Lin, Hao

2013-01-01T23:59:59.000Z

193

Joint Development of Coated Conductor and Low Cost Thin Film Solar Cells: Cooperative Research and Development Final Report, CRADA Number CRD-007-213  

SciTech Connect

UES plans on developing CIGS thin films by using Metal Organic Deposition (MOD) technique as it is a low-cost, non-vacuum method for scale-up to large area PV modules. NREL will support UES, Inc. through expert processing, characterization and device fabrication. NREL scientists will also help develop a processing phase diagram which includes composition, film thickness, annealing temperature and ambient conditions. Routine measurements of devices and materials will be done under NREL's core support project.

Bhattacharya, R.

2011-02-01T23:59:59.000Z

194

E-Print Network 3.0 - advanced thin film Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

half of all glass... cells by absorbing light within a specific wavelength. Today's thin-film solar cells could not function... , but static, layer of a thin-film pho- tovoltaic...

195

Partial Shading in Monolithic Thin Film PV Modules: Analysis...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

A. Alam, "Identification, Characterization and Implications of Shadow Degradation in Thin Film Solar Cells," in Reliability Physics Symposium (IRPS), 2011 IEEE International, 2011,...

196

Modeling and simulation of CuIn{sub 1?x}Ga{sub x}Se{sub 2} based thin film solar cell  

SciTech Connect

In this work, CIGS (Copper Indium Gallium Diselenide) based solar cell structure has been simulated. We have been calculated short circuit current, open circuit voltage and efficiency of the cell. The thickness of the absorption layer is varied from 400 to 3000 nm, keeping the thickness of other layers unchanged. The effect of absorption layer thickness over cell performance has been analyzed and found that the efficiency increases upto 22% until the thickness of the absorption layer reaches around 2000 nm.

Kumari, S., E-mail: sarita.kumari132@gmail.com; Verma, A. S. [Department of Physics, Banasthali University, Rajasthan-304022 (India); Singh, P.; Gautam, R. [Department of Electronics and Communication, Krishna Institute of Engg. and Tech., Ghaziabad-201206 (India)

2014-04-24T23:59:59.000Z

197

Energy collection and charge transfer processes in thin film photocells and photoelectrochemical cells: Final report  

SciTech Connect

The following paragraphs describe accomplishments and significant results for the two lines of research: (1) studies of energy collection and charge transfer processes in thin film systems and (2) solar energy utilization by photosensitized electrode processes at semiconductor electrodes.

Tachikawa, Hiroyasu

1981-12-31T23:59:59.000Z

198

Development of high-efficiency, thin-film CdTe solar cells. Final subcontract report, 1 February 1992--30 November 1995  

SciTech Connect

This report describes work performed by the Georgia Institute of Technology (GIT) to bring the polycrystalline CdTe cell efficiency a step closer to the practically achievable efficiency of 18% through fundamental understanding of detects and loss mechanisms, the role of chemical and heat treatments, and investigation of now process techniques. The objective was addressed by a combination of in-depth characterization, modeling, materials growth, device fabrication, and `transport analyses of Au/Cu/CdTe/CdS/SnO {sub 2} glass front-wall heterojunction solar cells. GiT attempted to understand the loss mechanism(s) in each layer and interface by a step-by-step investigation of this multilayer cell structure. The first step was to understand, quantify, and reduce the reflectance and photocurrent loss in polycrystalline CdTe solar calls. The second step involved the investigation of detects and loss mechanisms associated with the CdTe layer and the CdTe/CdS interface. The third stop was to investigate the effect of chemical and heat treatments on CdTe films and cells. The fourth step was to achieve a better and reliable contact to CdTe solar cells by improving the fundamental understanding. Of the effects of Cu on cell efficiency. Finally, the research involved the investigation of the effect of crystallinity and grain boundaries on Cu incorporation in the CdTe films, including the fabrication of CdTe solar calls with larger CdTe grain size.

Rohatgi, A.; Chou, H.C.; Kamra, S.; Bhat, A. [Georgia Inst. of Tech., Atlanta, GA (United States)

1996-01-01T23:59:59.000Z

199

Ames Lab 101: Improving Solar Cell Efficiency  

ScienceCinema (OSTI)

Rana Biswas, a scientist with the Ames Laboratory, discusses his team's research in creating more efficient solar cells and working with Iowa Thin Film to produce these cells.

Biswas, Rana

2012-08-29T23:59:59.000Z

200

Ames Lab 101: Improving Solar Cell Efficiency  

SciTech Connect

Rana Biswas, a scientist with the Ames Laboratory, discusses his team's research in creating more efficient solar cells and working with Iowa Thin Film to produce these cells.

Biswas, Rana

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "thin-film solar cell" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Impact of solid-phase crystallization of amorphous silicon on the chemical structure of the buried Si/ZnO thin film solar cell interface  

SciTech Connect

The chemical interface structure between phosphorus-doped hydrogenated amorphous silicon and aluminum-doped zinc oxide thin films is investigated with soft x-ray emission spectroscopy (XES) before and after solid-phase crystallization (SPC) at 600C. In addition to the expected SPC-induced phase transition from amorphous to polycrystalline silicon, our XES data indicates a pronounced chemical interaction at the buried Si/ZnO interface. In particular, we find an SPC-enhanced formation of Si-O bonds and the accumulation of Zn in close proximity to the interface. For an assumed closed and homogeneous SiO2 interlayer, an effective thickness of (5+2)nm after SPC could be estimated.

Bar, M.; Wimmer, M.; Wilks, R. G.; Roczen, M.; Gerlach, D.; Ruske, F.; Lips, K.; Rech, B.; Weinhardt, L.; Blum, M.; Pookpanratana, S.; Krause, S.; Zhang, Y.; Heske, C.; Yang, W.; Denlinger, J. D.

2010-04-30T23:59:59.000Z

202

Scanning electrochemical microscope characterization of thin film combinatorial libraries for fuel cell electrode applications  

Science Journals Connector (OSTI)

Pt–Ru combinatorial libraries of potential fuel cell anode catalysts are formed by sequential sputter deposition through masks onto Si wafers. Scanning electrochemical microscopy (SECM) is employed for characterization of electrocatalytic activity. Aspects of using a scanning electrochemical microscope for characterization of an array of thin film fuel cell electrode materials are discussed. It is shown that in applying SECM to library characterization, careful attention must be paid to thin film annealing, specimen topography and tip degradation in order to realize meaningful results. Results from a Pt–Ru thin film library reveal the most active members near the 50 Pt/50 Ru composition.

M Black; J Cooper; P McGinn

2005-01-01T23:59:59.000Z

203

Light Management Toward Efficient Organic Solar Cells  

Science Journals Connector (OSTI)

Light management methods for organic solar cells (OSCs) are presented: (i) thin-film optic method utilizing the inherent asymmetry of semitransparent OSCs; (ii) V-groove-based...

Yoo, Seunghyup; Han, Donggeon; Kim, Hoyeon; Cho, Changsoon; Lee, Jung-Yong

204

Guided optical modes in randomly textured ZnO thin films imaged by near-field scanning optical K. Bittkau* and R. Carius  

E-Print Network (OSTI)

relevance. In particular, when designing thin-film solar cells and light emitting diodes LEDs , ran- domly

Peinke, Joachim

205

Design consideration of micro thin film solid-oxide fuel cells  

Science Journals Connector (OSTI)

Miniaturized planar solid-oxide fuel cells (SOFCs) and stacks can be fabricated by thin film deposition and micromachining. Serious thermal stresses, originating in fabrication and during operation, cause thermal–mechanical instability of the constituent thin films. In this paper, the effect of thin film geometry on thermal stress and mechanical stability is evaluated to optimize the structure of a thin film. A novel design of thin circular electrolyte films for SOFCs is presented by using corrugated structures, with which small thermal stresses and a broad design range of structure parameters can be obtained. Thermal transfer analysis shows that heat loss by solid conduction is serious in thin films with a small radius. But thermal convection and radiation dominate heat loss in large thin films with a radius of several millimetres. Scale-dependent thermal characteristics show the importance of film size and packaging in optimization of thermal isolation for micro SOFCs. A novel flip-flop stack configuration for micro SOFCs is presented. This configuration allows multiple cells to share one reaction chamber, helps to obtain uniform flow fields, and simplifies the flow field network for micro fuel cell stacks.

Yanghua Tang; Kevin Stanley; Jonathan Wu; Dave Ghosh; Jiujun Zhang

2005-01-01T23:59:59.000Z

206

Low-Cost Light Weigh Thin Film Solar Concentrators  

Energy.gov (U.S. Department of Energy (DOE))

This presentation was delivered at the SunShot Concentrating Solar Power (CSP) Program Review 2013, held April 23–25, 2013 near Phoenix, Arizona.

207

Project Profile: Development and Productization of High-Efficiency, Low-Cost Building-Integrated PV Shingles Using Monocrystalline Silicon Thin-Film Solar Cells  

Energy.gov (U.S. Department of Energy (DOE))

The Solexel-OC team is developing a BIPV roofing shingle product that includes low-profile solar modules and a unique attachment system that will be fastened directly to the roof and incorporates...

208

EE580 Solar Cells Todd J. Kaiser  

E-Print Network (OSTI)

7/21/2010 1 EE580 ­ Solar Cells Todd J. Kaiser · Lecture 06 · Solar Cell Materials & Structures 1Montana State University: Solar Cells Lecture 6: Solar Cells Solar Cell Technologies · A) Crystalline Silicon · B) Thin Film · C) Group III-IV Cells 2Montana State University: Solar Cells Lecture 6: Solar

Kaiser, Todd J.

209

Role of Anions in Aqueous Sol–Gel Process Enabling Flexible Cu(In,Ga)S2 Thin-Film Solar Cells  

Science Journals Connector (OSTI)

(1, 2) Todorov et al. demonstrated that solution process-based devices can achieve high performance, along with economical synthetic production. ... All binding energies were readjusted with respect to carbon. ... Solar Energy (2004), 77 (6), 685-695 CODEN: SRENA4; ISSN:0038-092X. ...

Yunjung Oh; Kyoohee Woo; Daehee Lee; Hongseuk Lee; Kyujin Kim; Inhyuk Kim; Zhaoyang Zhong; Sunho Jeong; Jooho Moon

2014-09-29T23:59:59.000Z

210

Manufacture of Thin-Film Solar Cells:? Modeling and Control of Cu(InGa)Se2 Physical Vapor Deposition onto a Moving Substrate  

Science Journals Connector (OSTI)

It was developed at ITN Energy Systems in Littleton, CO, and Global Solar Energy in Tucson, AZ;3 the experimental deposition system described in this paper does not have an XRF sensor installed. ... The main advantage of the finite difference approach is that it is a continuous technique and, therefore, is better suited for including mass transfer or reaction kinetics. ... Because the decoupled deposition process is only single-input?single-output with simple constraints (flow rates cannot be negative), internal model control can potentially combine the advantages of unconstrained MPC, but avoid its disadvantages. ...

S. Tobias Junker; Robert W. Birkmire; Francis J. Doyle; III

2003-12-17T23:59:59.000Z

211

The silicon/zinc oxide interface in amorphous silicon-based thin-film solar cells: Understanding an empirically optimized contact  

SciTech Connect

The electronic structure of the interface between the boron-doped oxygenated amorphous silicon 'window layer' (a-SiO{sub x}:H(B)) and aluminum-doped zinc oxide (ZnO:Al) was investigated using hard x-ray photoelectron spectroscopy and compared to that of the boron-doped microcrystalline silicon ({mu}c-Si:H(B))/ZnO:Al interface. The corresponding valence band offsets have been determined to be (-2.87 {+-} 0.27) eV and (-3.37 {+-} 0.27) eV, respectively. A lower tunnel junction barrier height at the {mu}c-Si:H(B)/ZnO:Al interface compared to that at the a-SiO{sub x}:H(B)/ZnO:Al interface is found and linked to the higher device performances in cells where a {mu}c-Si:H(B) buffer between the a-Si:H p-i-n absorber stack and the ZnO:Al contact is employed.

Gerlach, D.; Wilks, R. G.; Wimmer, M.; Felix, R.; Gorgoi, M.; Lips, K.; Rech, B. [Helmholtz-Zentrum Berlin fuer Materialien und Energie GmbH, Hahn-Meitner-Platz 1, D-14109 Berlin (Germany); Wippler, D.; Mueck, A.; Meier, M.; Huepkes, J. [Institut fuer Energie- und Klimaforschung, Forschungszentrum Juelich GmbH, Wilhelm-Johnen-Strasse, D-52428 Juelich (Germany); Lozac'h, M.; Ueda, S.; Sumiya, M. [National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan); Yoshikawa, H. [Synchrotron X-ray Station at SPring-8, NIMS, Kouto 1-1-1, Sayo-cho, Sayo-gun, Hyogo 679-5148 (Japan); Kobayashi, K. [Quantum Beam Science Directorate, Japan Atomic Energy Agency, Kouto 1-1-1, SPring-8, Sayo-cho, Sayo-gun, Hyogo 679-5148 (Japan); Baer, M. [Helmholtz-Zentrum Berlin fuer Materialien und Energie GmbH, Hahn-Meitner-Platz 1, D-14109 Berlin (Germany); Institut fuer Physik und Chemie, Brandenburgische Technische Universitaet Cottbus, Konrad-Wachsmann-Allee 1, D-03046 Cottbus (Germany)

2013-07-08T23:59:59.000Z

212

Generation of low work function, stable compound thin films by laser ablation  

DOE Patents (OSTI)

Generation of low work function, stable compound thin films by laser ablation. Compound thin films with low work function can be synthesized by simultaneously laser ablating silicon, for example, and thermal evaporating an alkali metal into an oxygen environment. For example, the compound thin film may be composed of Si/Cs/O. The work functions of the thin films can be varied by changing the silicon/alkali metal/oxygen ratio. Low work functions of the compound thin films deposited on silicon substrates were confirmed by ultraviolet photoelectron spectroscopy (UPS). The compound thin films are stable up to 500.degree. C. as measured by x-ray photoelectron spectroscopy (XPS). Tests have established that for certain chemical compositions and annealing temperatures of the compound thin films, negative electron affinity (NEA) was detected. The low work function, stable compound thin films can be utilized in solar cells, field emission flat panel displays, electron guns, and cold cathode electron guns.

Dinh, Long N. (Concord, CA); McLean, II, William (Oakland, CA); Balooch, Mehdi (Berkeley, CA); Fehring, Jr., Edward J. (Dublin, CA); Schildbach, Marcus A. (Livermore, CA)

2001-01-01T23:59:59.000Z

213

Structure of All-Polymer Solar Cells Impedes Efficiency  

NLE Websites -- All DOE Office Websites (Extended Search)

thin films of semiconducting polymers as a possible alternative to silicon-based solar cells. Such devices would have the advantages of being cheap to produce,...

214

Plasmonic Nanostructure Design for Efficient Light Coupling into Solar Cells  

E-Print Network (OSTI)

Plasmonic Nanostructure Design for Efficient Light Coupling into Solar Cells Vivian E. Ferry, Luke in thin film solar cells. In particular, the ability of plasmonic structures to localize light sunlight into guided modes in thin film Si and GaAs plasmonic solar cells whose back interface is coated

Atwater, Harry

215

Thin Film Photovoltaics Research  

Energy.gov (U.S. Department of Energy (DOE))

The U.S. Department of Energy (DOE) supports research and development of four thin-film technologies on the path to achieving cost-competitive solar energy, including:

216

Development of Thin Film Membrane Assemblies with Novel Nanostructured Electrocatalyst for Next Generation Fuel Cells  

E-Print Network (OSTI)

Development of Thin Film Membrane Assemblies with Novel Nanostructured Electrocatalyst for Next of the efficiency loss (80%) in a fuel cell arises due to the cathode. Oxygen reduction at the cathode requires is to synthesize nanosized Pt-X electrocatalysts for oxygen reduction through pulse and electroless deposition

Popov, Branko N.

217

Thin film photovoltaic device  

DOE Patents (OSTI)

A thin film photovoltaic solar cell which utilizes a zinc phosphide semiconductor is of the homojunction type comprising an n-type conductivity region forming an electrical junction with a p-type region, both regions consisting essentially of the same semiconductor material. The n-type region is formed by treating zinc phosphide with an extrinsic dopant such as magnesium. The semiconductor is formed on a multilayer substrate which acts as an opaque contact. Various transparent contacts may be used, including a thin metal film of the same chemical composition as the n-type dopant or conductive oxides or metal grids. 5 figs.

Catalano, A.W.; Bhushan, M.

1982-08-03T23:59:59.000Z

218

Thin film photovoltaic device  

DOE Patents (OSTI)

A thin film photovoltaic solar cell which utilizes a zinc phosphide semiconductor is of the homojunction type comprising an n-type conductivity region forming an electrical junction with a p-type region, both regions consisting essentially of the same semiconductor material. The n-type region is formed by treating zinc phosphide with an extrinsic dopant such as magnesium. The semiconductor is formed on a multilayer substrate which acts as an opaque contact. Various transparent contacts may be used, including a thin metal film of the same chemical composition as the n-type dopant or conductive oxides or metal grids.

Catalano, Anthony W. (Wilmington, DE); Bhushan, Manjul (Wilmington, DE)

1982-01-01T23:59:59.000Z

219

On the feasibility of colored glazed thermal solar collectors based on thin film interference filters  

Science Journals Connector (OSTI)

Glazed thermal solar collectors, typically equipped with black, optical selective absorber sheets, exhibit good energy conversion efficiency. However, the black color, and sometimes the visibility of tubes and corrugations of the metal sheets, limit the architectural integration into buildings. In order to overcome this drawback, interference filters are considered as a promising approach. Multilayered thin film stacks deposited on the cover glass can produce a colored reflection hiding the black absorber without a great loss of energy. These interference filters are designed and optimized by numerical simulation. Such coatings are deposited by vacuum processes (e.g. magnetron sputtering) and also via the SolGel method. Optical measurements, such as real-time laser-reflectometry and spectrophotometry, are suitable to determine film thicknesses and optical constants of individual layers, and to measure color coordinates and solar transmittance for the multilayer stacks. Advantages and disadvantages of the different coating processes are discussed.

A. Schüler; C. Roecker; J.-L. Scartezzini; J. Boudaden; I.R. Videnovic; R.S.-C. Ho; P. Oelhafen

2004-01-01T23:59:59.000Z

220

Institute of Photo Electronic Thin Film Devices and Technology of Nankai  

Open Energy Info (EERE)

Electronic Thin Film Devices and Technology of Nankai Electronic Thin Film Devices and Technology of Nankai University Jump to: navigation, search Name Institute of Photo-Electronic Thin Film Devices and Technology of Nankai University Place Tianjin Municipality, China Zip 300071 Sector Solar Product A thin-film solar cell research institute in China. References Institute of Photo-Electronic Thin Film Devices and Technology of Nankai University[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Institute of Photo-Electronic Thin Film Devices and Technology of Nankai University is a company located in Tianjin Municipality, China . References ↑ "Institute of Photo-Electronic Thin Film Devices and Technology of Nankai University"

Note: This page contains sample records for the topic "thin-film solar cell" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Conformal Metal Thin Films for H2 Purification and Fuel-Cell Catalyst Applications Tyler Munhollon, Coe College, SURF 2009 Fellow  

E-Print Network (OSTI)

Conformal Metal Thin Films for H2 Purification and Fuel-Cell Catalyst Applications Tyler Munhollon a heightened need for pure hydrogen gas at a low cost. Research has begun on thin film metal membranes that will become a hydrogen filter in syngas pipelines. The thin film metal membranes are fairly inexpensive

Li, Mo

222

Indium doped zinc oxide nanowire thin films for antireflection and solar absorber coating applications  

SciTech Connect

Indium doped ZnO nanowire thin films were prepared by thermal oxidation of Zn-In metal bilayer films at 500°C. The ZnO:In nanowires are 20-100 nm in diameter and several tens of microns long. X-ray diffraction patterns confirm the formation of oxide and indicate that the films are polycrystalline, both in the as deposited and annealed states. The transmission which is <2% for the as deposited Zn-In films increases to >90% for the ZnO:In nanowire films. Significantly, the reflectance for the as deposited films is < 10% in the region between 200 to 1500 nm and < 2% for the nanowire films. Thus, the as deposited films can be used solar absorber coatings while the nanowire films are useful for antireflection applications. The growth of nanowires by this technique is attractive since it does not involve very high temperatures and the use of catalysts.

Shaik, Ummar Pasha [ACRHEM, University of Hyderabad, Hyderabad-500046 (India); Krishna, M. Ghanashyam, E-mail: mgksp@uohyd.ac.in [ACRHEM and School of Physics, University of Hyderabad, Hyderabad-500046 (India)

2014-04-24T23:59:59.000Z

223

Advances in solar cell technology  

Science Journals Connector (OSTI)

The advances in solar cell efficiency radiation tolerance and cost over the last decade are reviewed. Potential performance of thin?film solar cells in space are discussed and the cost and the historical trends in production capability of the photovoltaics industry considered with respect to the requirements of satellite solar power systems.

Geoffrey A. Landis; Sheila G. Bailey

1995-01-01T23:59:59.000Z

224

The research field of thin-film photovoltaics of the department of energy-and semiconductor research (EHF) of the institute of physics at the Carl-von-Ossietzky University of Oldenburg  

E-Print Network (OSTI)

The research field of thin-film photovoltaics of the department of energy- and semiconductor and calibration of an optical simulation for thin-film solar cells In recent years, the photovoltaic has become is necessary to let photovoltaic remain economical attractive. Thin-film solar cells on basis of Cu(In,Ga)Se2

Peinke, Joachim

225

Temperature-controlled neutron reflectometry sample cell suitable for study of photoactive thin films  

SciTech Connect

We describe a novel cell design intended for the study of photoactive materials using neutron reflectometry. The cell can maintain sample temperature and control of ambient atmospheric environment. Critically, the cell is built with an optical port, enabling light irradiation or light probing of the sample, simultaneous with neutron reflectivity measurements. The ability to measure neutron reflectivity with simultaneous temperature ramping and/or light illumination presents unique opportunities for measuring photoactive materials. To validate the cell design, we present preliminary results measuring the photoexpansion of thin films of azobenzene polymer.

Yager, Kevin G.; Tanchak, Oleh M.; Barrett, Christopher J.; Watson, Mike J.; Fritzsche, Helmut [Department of Chemistry, McGill University, Lab 406, 801 Sherbrooke Street W., Montreal, Quebec H3A 2K6 (Canada); Chalk River Laboratories, Building 459, Station 18, Chalk River, Ontario K0J 1J0 (Canada)

2006-04-15T23:59:59.000Z

226

Tuning of Plasmonic Nanoparticles for Enhancing Solar Cell Efficiency  

Science Journals Connector (OSTI)

Plasmonic nanoparticles based thin film solar cells plays a crucial role in designing the current breed of third generation solar cells. To decrease the material cost for economic viability without compromising o...

Somik Chakravarty; Lingeswaran Arunagiri…

2014-01-01T23:59:59.000Z

227

DISSERTATION Role of the Cu-O Defect in CdTe Solar Cells  

E-Print Network (OSTI)

OF THE CU-O DEFECT COMPLEX IN CDTE SOLAR CELLS Thin-film CdTe is one of the leading materials used the defects present in thin-film CdTe deposited for solar cells. One key defect seen in the thin-film CdDISSERTATION Role of the Cu-O Defect in CdTe Solar Cells Submitted by Caroline R. Corwine

Sites, James R.

228

Application of lasers in solar cell technologies  

Science Journals Connector (OSTI)

The possibilities for applying lasers to the fabrication of solar cells (the laser texturing of silicon surfaces and pulsed laser deposition of indium tin oxide (ITO) thin films) are demonstrated.

D. A. Zuev; A. A. Lotin; O. A. Novodvorsky…

2012-10-01T23:59:59.000Z

229

Enhanced Photon Recycling in Multijunction Solar Cells  

NLE Websites -- All DOE Office Websites (Extended Search)

a nd J .A. R ogers, " Device A rchitectures f or E nhanced Photon Recycling in Thin---Film MulQjuncQon Solar Cells." Adv. Energy M ater. (2014). DOI: 1 0.1002aenm.201400919...

230

Piezoelectric, solar and thermal energy harvesting for hybrid low-power generator systems with thin-film batteries  

Science Journals Connector (OSTI)

The harvesting of ambient energy to power small electronic components has received tremendous attention over the last decade. The research goal in this field is to enable self-powered electronic components for use particularly in wireless sensing and measurement applications. Thermal energy due to temperature gradients, solar energy and ambient vibrations constitute some of the major sources of energy that can be harvested. Researchers have presented several papers focusing on each of these topics separately. This paper aims to develop a hybrid power generator and storage system using these three sources of energy in order to improve both structural multifunctionality and system-level robustness in energy harvesting. A multilayer structure with flexible solar, piezoceramic, thin-film battery and metallic substructure layers is developed (with the overhang dimensions of 93 mm ? 25 mm ? 1.5 mm in cantilevered configuration). Thermal energy is also used for charging the thin-film battery layers using a 30.5 mm ? 33 mm ? 4.1 mm generator. Performance results are presented for charging and discharging of the thin-film battery layers using each one of the harvesting methods. It is shown based on the extrapolation of a set of measurements that 1 mA h of a thin-film battery can be charged in 20 min using solar energy (for a solar irradiance level of 223 W m?2), in 40 min using thermal energy (for a temperature difference of 31 °C) and in 8 h using vibrational energy (for a harmonic base acceleration input of 0.5g at 56.4 Hz).

P Gambier; S R Anton; N Kong; A Erturk; D J Inman

2012-01-01T23:59:59.000Z

231

Towards Large Area Industrial Cost Competitive Coating for Thin Film Solar Electricity Production  

Science Journals Connector (OSTI)

Thin film PV market faces a struggling situation due to the need of reducing strongly prices, which can be done by increasing efficiency and reducing fabrication costs. Improvement of...

Bermudez, Veronica

232

Toward microscale Cu,,In,Ga...Se2 solar cells for efficient conversion and optimized material usage: Theoretical evaluation  

E-Print Network (OSTI)

solar cells are gaining a growing market share in the photovoltaic field. CIGS thin film solar cells. In this paper, the behavior of microscale thin film solar cells under concen- tration will be studied. We focusToward microscale Cu,,In,Ga...Se2 solar cells for efficient conversion and optimized material usage

Boyer, Edmond

233

Thin crystalline silicon solar cells based on epitaxial films grown at 165C by RF PECVD  

E-Print Network (OSTI)

1 Thin crystalline silicon solar cells based on epitaxial films grown at 165°C by RF PECVD Romain temperatures. Keywords : Low temperature, epitaxy, PECVD, Si thin film, Solar cell hal-00749873,version1-25Nov shortage until 2010. Research on epitaxial growth for thin film crystalline silicon solar cells has gained

234

Silicon Solar Cell Light-Trapping Using Defect Mode Photonic Kelsey A. Whitesell*a  

E-Print Network (OSTI)

Silicon Solar Cell Light-Trapping Using Defect Mode Photonic Crystals Kelsey A. Whitesell to enhance performance of thin film solar cells because of their unique ability to control light. We show for light trapping in thin film photovoltaics. Keywords: photonic crystals, defect, silicon, solar cell

Atwater, Harry

235

Light harvesting by planar photonic crystal in solar cells: The case of amorphous silicon  

E-Print Network (OSTI)

Light harvesting by planar photonic crystal in solar cells: The case of amorphous silicon Guillaume on light management in silicon thin film solar cells, using photonic crystals (PhC) structures. We by means of optical simulations performed on realistic thin film solar cell stacks. Theoretically

Boyer, Edmond

236

Thin-film heterostructure solid oxide fuel cells  

Science Journals Connector (OSTI)

A micro thin-filmsolid oxide fuel cell (TFSOFC) has been designed based on thin-filmdeposition and microlithographic processes. The TFSOFC is composed of a thin-filmelectrolyte grown on a nickel foil substrate and a thin-filmcathodedeposited on the electrolyte. The Ni foil substrate is then processed into a porous anode by photolithographic patterning and etching to develop pores for gas transport into the fuel cell. A La 0.5 Sr 0.5 CoO 3 (LSCO) thin-filmcathode is then deposited on the electrolyte and a porous NiO–YSZ cermet layer is added to the anode to improve the electrode performance. The TFSOFC has stably operated in a temperature ranges as low as 480–570?°C significantly lower than bulk SOFC’s and has yielded a maximum output power density of ?110? mW/cm 2 in that temperature range.

X. Chen; N. J. Wu; L. Smith; A. Ignatiev

2004-01-01T23:59:59.000Z

237

Formosun Solar Corp | Open Energy Information  

Open Energy Info (EERE)

search Name: Formosun Solar Corp. Place: Hsinchu County, Taiwan Zip: 303-51 Sector: Solar Product: Thin-film solar cell producer based in Taiwan. References: Formosun Solar...

238

Light harvesting enhancement in solar cells with quasicrystalline plasmonic structures  

Science Journals Connector (OSTI)

Solar cells are important in the area of renewable energies. Since it is expensive to produce solar-grade silicon [Electrochem. Soc. Interface 17, 30 (2008)], especially thin-film...

Bauer, Christina; Giessen, Harald

2013-01-01T23:59:59.000Z

239

Decohesion Kinetics in Polymer Organic Solar Cells  

Science Journals Connector (OSTI)

Decohesion Kinetics in Polymer Organic Solar Cells ... We investigate the role of molecular weight (MW) of the photoactive polymer poly(3-hexylthiophene) (P3HT) on the temperature-dependent decohesion kinetics of bulk heterojunction (BHJ) organic solar cells (OSCs). ... fullerenes; solar cells; thin films; fracture; polymer ...

Christopher Bruner; Fernando Novoa; Stephanie Dupont; Reinhold Dauskardt

2014-11-04T23:59:59.000Z

240

Hybrid deposition of thin film solid oxide fuel cells and electrolyzers  

DOE Patents (OSTI)

The use of vapor deposition techniques enables synthesis of the basic components of a solid oxide fuel cell (SOFC); namely, the electrolyte layer, the two electrodes, and the electrolyte-electrode interfaces. Such vapor deposition techniques provide solutions to each of the three critical steps of material synthesis to produce a thin film solid oxide fuel cell (TFSOFC). The electrolyte is formed by reactive deposition of essentially any ion conducting oxide, such as defect free, yttria stabilized zirconia (YSZ) by planar magnetron sputtering. The electrodes are formed from ceramic powders sputter coated with an appropriate metal and sintered to a porous compact. The electrolyte-electrode interface is formed by chemical vapor deposition of zirconia compounds onto the porous electrodes to provide a dense, smooth surface on which to continue the growth of the defect-free electrolyte, whereby a single fuel cell or multiple cells may be fabricated. 8 figs.

Jankowski, A.F.; Makowiecki, D.M.; Rambach, G.D.; Randich, E.

1998-05-19T23:59:59.000Z

Note: This page contains sample records for the topic "thin-film solar cell" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Hybrid deposition of thin film solid oxide fuel cells and electrolyzers  

DOE Patents (OSTI)

The use of vapor deposition techniques enables synthesis of the basic components of a solid oxide fuel cell (SOFC); namely, the electrolyte layer, the two electrodes, and the electrolyte-electrode interfaces. Such vapor deposition techniques provide solutions to each of the three critical steps of material synthesis to produce a thin film solid oxide fuel cell (TFSOFC). The electrolyte is formed by reactive deposition of essentially any ion conducting oxide, such as defect free, yttria stabilized zirconia (YSZ) by planar magnetron sputtering. The electrodes are formed from ceramic powders sputter coated with an appropriate metal and sintered to a porous compact. The electrolyte-electrode interface is formed by chemical vapor deposition of zirconia compounds onto the porous electrodes to provide a dense, smooth surface on which to continue the growth of the defect-free electrolyte, whereby a single fuel cell or multiple cells may be fabricated.

Jankowski, Alan F. (Livermore, CA); Makowiecki, Daniel M. (Livermore, CA); Rambach, Glenn D. (Livermore, CA); Randich, Erik (Endinboro, PA)

1998-01-01T23:59:59.000Z

242

Hybrid deposition of thin film solid oxide fuel cells and electrolyzers  

DOE Patents (OSTI)

The use of vapor deposition techniques enables synthesis of the basic components of a solid oxide fuel cell (SOFC); namely, the electrolyte layer, the two electrodes, and the electrolyte-electrode interfaces. Such vapor deposition techniques provide solutions to each of the three critical steps of material synthesis to produce a thin film solid oxide fuel cell (TFSOFC). The electrolyte is formed by reactive deposition of essentially any ion conducting oxide, such as defect free, yttria stabilized zirconia (YSZ) by planar magnetron sputtering. The electrodes are formed from ceramic powders sputter coated with an appropriate metal and sintered to a porous compact. The electrolyte-electrode interface is formed by chemical vapor deposition of zirconia compounds onto the porous electrodes to provide a dense, smooth surface on which to continue the growth of the defect-free electrolyte, whereby a single fuel cell or multiple cells may be fabricated.

Jankowski, Alan F. (Livermore, CA); Makowiecki, Daniel M. (Livermore, CA); Rambach, Glenn D. (Livermore, CA); Randich, Erik (Endinboro, PA)

1999-01-01T23:59:59.000Z

243

Thin film heterojunction photovoltaic cells and methods of making the same  

DOE Patents (OSTI)

A method of fabricating a thin film heterojunction photovoltaic cell which comprises depositing a film of a near intrinsic or n-type semiconductor compound formed of at least one of the metal elements of Class II B of the Periodic Table of Elements and at least tellurium and then heating said film at a temperature between about 250.degree. C. and 500.degree. C. for a time sufficient to convert said film to a suitably low resistivity p-type semiconductor compound. Such film may be deposited initially on the surface of an n-type semiconductor substrate. Alternatively, there may be deposited on the converted film a layer of n-type semiconductor compound different from the film semiconductor compound. The resulting photovoltaic cell exhibits a substantially increased power output over similar cells not subjected to the method of the present invention.

Basol, Bulent M. (Los Angeles, CA); Tseng, Eric S. (Los Angeles, CA); Rod, Robert L. (Los Angeles, CA)

1983-06-14T23:59:59.000Z

244

INVESTIGATIONS OF CuInTe2 / CdS & CdTe / CdS HETEROJUNCTION SOLAR CELLS.  

E-Print Network (OSTI)

??Thin film solar cells of Copper Indium Telluride and Cadmium Sulfide junctions were fabricated on plain ITO glass slides and also on those coated with… (more)

Gutta, Venkatesh

2011-01-01T23:59:59.000Z

245

Control of thermal emittance of stainless steel using sputtered tungsten thin films for solar thermal power applications  

Science Journals Connector (OSTI)

Abstract Low thermal emittance is the key factor of a solar collector. For high temperature solar thermal applications, low emittance is an important parameter, because the thermal radiative losses of the absorbers increase proportionally by T4. Our primary motivation for carrying out this work has been to lower the thermal emittance of stainless steel substrate (intrinsic emittance=0.12–0.13) by coating a thin film of high infrared (IR) reflecting tungsten (W). Tungsten thin films were deposited on stainless steel substrates using a glow discharge direct current magnetron sputtering system. Emittance as low as 0.03 was obtained by varying the thickness of W coating on stainless steel substrate. The influences of structural, morphological and electrical properties of the W coating on its emittance values are studied. The effect of substrate roughness on the emittance of W coating is also examined. Thermal stability of the W coatings is studied in both vacuum and air. In order to demonstrate the effect of W interlayer, solar selective coating of AlTiN/AlTiON/AlTiO tandem absorber was deposited on W coated stainless steel substrates, which exhibited absorptance of 0.955 and emittance of 0.08 with a thermal stability up to 600 °C in vacuum.

K.P. Sibin; Siju John; Harish C. Barshilia

2015-01-01T23:59:59.000Z

246

TAPE CALENDERING MANUFACTURING PROCESS FOR MULTILAYER THIN-FILM SOLID OXIDE FUEL CELLS  

SciTech Connect

This report summarizes the work performed by Hybrid Power Generation Systems, LLC during the Phases I and II under Contract DE-AC26-00NT40705 for the U. S. Department of Energy, National Energy Technology Laboratory (DOE/NETL) entitled ''Tape Calendering Manufacturing Process For Multilayer Thin-Film Solid Oxide Fuel Cells''. The main objective of this project was to develop the manufacturing process based on tape calendering for multilayer solid oxide fuel cells (SOFC's) using the unitized cell design concept and to demonstrate cell performance under specified operating conditions. Summarized in this report is the development and improvements to multilayer SOFC cells and the unitized cell design. Improvements to the multilayer SOFC cell were made in electrochemical performance, in both the anode and cathode, with cells demonstrating power densities of nearly 0.9 W/cm{sup 2} for 650 C operation and other cell configurations showing greater than 1.0 W/cm{sup 2} at 75% fuel utilization and 800 C. The unitized cell design was matured through design, analysis and development testing to a point that cell operation at greater than 70% fuel utilization was demonstrated at 800 C. The manufacturing process for both the multilayer cell and unitized cell design were assessed and refined, process maps were developed, forming approaches explored, and nondestructive evaluation (NDE) techniques examined.

Nguyen Minh; Kurt Montgomery

2004-10-01T23:59:59.000Z

247

Polymeric precursor derived nanocrystalline ZnO thin films using EDTA as chelating agent  

E-Print Network (OSTI)

properties, ZnO has plausible electro-optical applications, such as, solar cells [1, 2], light- emitting diodes [3, 4], UV lasers [5], thin film transistors [6,7], and UV photodetectors [8]. Besides

Mohanty, Saraju P.

248

MELT-MEDIATED LASER CRYSTALLIZATION OF THIN FILM NITI SHAPE MEMORY ALLOYS  

E-Print Network (OSTI)

matrix displays (e.g. LCD and OLED) as well as the active medium in thin film solar cells [4 of furnace, solid phase crystallization parameters (i.e. annealing temperature and dwell time

Yao, Y. Lawrence

249

Structural, optical and photocatalytic properties of ZnO thin films and  

E-Print Network (OSTI)

emitting diodes, gas sensors and transparent conducting thin films for solar cells. In this work, Zn an electronic furnace. Fig. 1. Grain size (black) and RMS variations (blue) of 1-6 layered ZnO films vs

250

Experimental Demonstration of Quasi-Resonant Absorption in Silicon Thin Films for Enhanced Solar Light Trapping  

E-Print Network (OSTI)

We experimentally demonstrate that the addition of partial lattice disorder to a thin-film micro-crystalline silicon photonic crystal results in the controlled spectral broadening of its absorption peaks to form quasi resonances; increasing light trapping over a wide bandwidth while also reducing sensitivity to the angle of incident radiation. Accurate computational simulations are used to design the active-layer photonic crystal so as to maximize the number of its absorption resonances over the broadband interval where micro-crystalline silicon is weakly absorbing before lattice disorder augmented with fabrication-induced imperfections are applied to further boost performance. Such a design strategy may find practical use for increasing the efficiency of thin-film silicon photovoltaics.

Oskooi, Ardavan; Ishizaki, Kenji; Noda, Susumu

2013-01-01T23:59:59.000Z

251

Mat. Res. Soc. Symp. Proc. Vol. 668 @ 2001 Materials Research Society Influence of proton irradiation and development of flexible CdTe solar cells on polyimide  

E-Print Network (OSTI)

. Polycrystalline thin film solar cells of II-VI and I-II-VI compounds are potentially important because power (defined as the ratio of output electrical power to the solar module weight). Thin film solar cells on polymer films can yield more than 2- kW/kg specific power. CIGS solar cells of about 10 to 12

Romeo, Alessandro

252

Conditioning effects on La1-xSrxMnO3-Yttria stabilized Zirconia electrodes for thin-film solid oxide fuel cells  

E-Print Network (OSTI)

for Thin-Film Solid Oxide Fuel Cells You-Kee Lee a, *, Jung-performance of a solid oxide fuel cell (SOFC). LSM surfacethe development of solid oxide fuel cells (SOFCs) capable of

2002-01-01T23:59:59.000Z

253

Light Incoupling and Optical Optimisation of Organic Solar Cells  

Science Journals Connector (OSTI)

Due to the thin film nature of organic solar cells, light-trapping and interference effects play a significant role. We discuss here the utilisation of these effects in optimisation...

Meiß, Jan; Schueppel, Rico; Timmreck, Ronny; Furno, Mauro; Uhrich, Christian; Sonntag, Stefan; Gnehr, Wolf-Michael; Pfeiffer, Martin; Leo, Karl; Riede, Moritz

254

1. INTRODUCTION CdTe/CdS solar cells are among the most promising  

E-Print Network (OSTI)

Te/CdS SOLAR CELLS A.Romeo, A.N. Tiwari, and H. Zogg Thin Films Physics Group, Institute of Quantum ElectronicsTe/CdS thin film solar cells. The merits of different TCOs and the properties of the CdTe/CdS solar cells1. INTRODUCTION CdTe/CdS solar cells are among the most promising devices for low cost and high

Romeo, Alessandro

255

Modeling and control of thin film surface morphology: application to thin film solar cells  

E-Print Network (OSTI)

Deposition. Industrial & Engineering Chemistry Research, 50,deposition. Industrial & Engineering Chemistry Research, 48:deposition. Industrial & Engineering Chemistry Research, 50:

Huang, Jianqiao

2012-01-01T23:59:59.000Z

256

Synthesis and Characterization of Functional Nanostructured Zinc Oxide Thin Films  

E-Print Network (OSTI)

.1149/1.2357098, copyright The Electrochemical Society 65 #12;66 reduced environmental impact and a minimum undesirable inter-temperature thin film growth technique has been developed to fabricate a new generation of smart and functional and structural requirements of their applications in gas sensors and solar cells. The rapid photothermal

Chow, Lee

257

In-Line Post-Process Scribing for Reducing Cell to Module Efficiency Gap in Monolithic Thin Film Photovoltaics  

E-Print Network (OSTI)

The gap between cell and module efficiency is a major challenge for all photovoltaic (PV) technologies. For monolithic thin film PV modules, a significant fraction of this gap has been attributed to parasitic shunts, and other defects, distributed across the module. In this paper, we show that it is possible to contain or isolate these shunt defects, using the state of the art laser scribing processes, after the fabrication of the series connected module is finished. We discuss three possible alternatives, and quantify the performance gains for each technique. We demonstrate that using these techniques, it is possible to recover up to 50% of the power lost to parasitic shunts, which results in 1-2% (absolute) increase in module efficiencies for typical thin film PV technologies.

Dongaonkar, Sourabh

2013-01-01T23:59:59.000Z

258

Control of morphology for enhanced electronic transport in PECVD-grown a-Si : H Thin Films  

E-Print Network (OSTI)

Solar cells have become an increasingly viable alternative to traditional, pollution causing power generation methods. Although crystalline silicon (c-Si) modules make up most of the market, thin films such as hydrogenated ...

Castro Galnares, Sebastián

2010-01-01T23:59:59.000Z

259

DISSERTATION IMPACT OF SECONDARY BARRIERS ON CuIn1-xGaxSe2 SOLAR-CELL  

E-Print Network (OSTI)

Impact of Secondary Barriers on CuIn1-xGaxSe2 Solar-Cell Operation Thin-film solar cells based on CuInSe2 of thin-film solar-cell tandems. Since the bottom cells are exposed to practically only "red" photonsDISSERTATION IMPACT OF SECONDARY BARRIERS ON CuIn1-xGaxSe2 SOLAR-CELL OPERATION Submitted by Alexei

Sites, James R.

260

Vacuum-Deposited Planar Heterojunction Polymer Solar Cells  

Science Journals Connector (OSTI)

Vacuum-Deposited Planar Heterojunction Polymer Solar Cells ... Bilayer heterojunction solar cells were fabricated by sequential deposition of P3HT and C60 and the photovoltaic response measured. ... organic solar cells; conjugated polymers; poly(3-hexylthiophene); vacuum thermal deposition; thin films ...

Peter Kovacik; Giuseppe Sforazzini; Andrew G. Cook; Shawn M. Willis; Patrick S. Grant; Hazel E. Assender; Andrew A. R. Watt

2010-12-14T23:59:59.000Z

Note: This page contains sample records for the topic "thin-film solar cell" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Simulations of solar cell absorption enhancement using resonant modes  

E-Print Network (OSTI)

Simulations of solar cell absorption enhancement using resonant modes of a nanosphere array Jonathan Grandidier Michael G. Deceglie Dennis M. Callahan Harry A. Atwater #12;Simulations of solar cell for enhancing the absorption of thin-film amorphous silicon solar cells using periodic arrangements of resonant

Grandidier, Jonathan

262

Solar cell efficiency enhancement via light trapping in printable resonant  

E-Print Network (OSTI)

Solar cell efficiency enhancement via light trapping in printable resonant dielectric nanosphere for addressing the key challenge of light trapping in thin-film solar cells. We experimentally and theoretically the absorber, junction, and passivation layers. Recently, a number of innovative solar cell light

Atwater, Harry

263

Dielectric nanostructures for broadband light trapping in organic solar cells  

E-Print Network (OSTI)

Dielectric nanostructures for broadband light trapping in organic solar cells Aaswath Raman, Zongfu light trapping configuration for thin-film solar cells," Appl. Phys. Lett. 91, 243501 (2007). 8. M@stanford.edu Abstract: Organic bulk heterojunction solar cells are a promising candidate for low-cost next

Fan, Shanhui

264

Solar cell efficiency enhancement via light trapping in printable resonant  

E-Print Network (OSTI)

Solar cell efficiency enhancement via light trapping in printable resonant dielectric nanosphere for addressing the key challenge of light trapping in thin-film solar cells. We experimentally and theoretically, photovoltaics, resonant dielectric structures, solar cells * Corresponding author: e-mail jgrandid

Grandidier, Jonathan

265

Fabrication of polycrystalline thin films by pulsed laser processing  

DOE Patents (OSTI)

A method is disclosed for fabricating polycrystalline thin films on low-temperature (or high-temperature) substrates which uses processing temperatures that are low enough to avoid damage to the substrate, and then transiently heating select layers of the thin films with at least one pulse of a laser or other homogenized beam source. The pulse length is selected so that the layers of interest are transiently heated to a temperature which allows recrystallization and/or dopant activation while maintaining the substrate at a temperature which is sufficiently low to avoid damage to the substrate. This method is particularly applicable in the fabrication of solar cells. 1 fig.

Mitlitsky, F.; Truher, J.B.; Kaschmitter, J.L.; Colella, N.J.

1998-02-03T23:59:59.000Z

266

Fabrication of polycrystalline thin films by pulsed laser processing  

DOE Patents (OSTI)

A method for fabricating polycrystalline thin films on low-temperature (or high-temperature) substrates which uses processing temperatures that are low enough to avoid damage to the substrate, and then transiently heating select layers of the thin films with at least one pulse of a laser or other homogenized beam source. The pulse length is selected so that the layers of interest are transiently heated to a temperature which allows recrystallization and/or dopant activation while maintaining the substrate at a temperature which is sufficiently low to avoid damage to the substrate. This method is particularly applicable in the fabrication of solar cells.

Mitlitsky, Fred (Livermore, CA); Truher, Joel B. (San Rafael, CA); Kaschmitter, James L. (Pleasanton, CA); Colella, Nicholas J. (Livermore, CA)

1998-02-03T23:59:59.000Z

267

Development of tandem amorphous/microcrystalline silicon thin-film large-area see-through color solar panels with reflective layer and 4-step laser scribing for building-integrated photovoltaic applications  

Science Journals Connector (OSTI)

In this work, tandem amorphous/microcrystalline silicon thin-film large-area see-through color solar modules were successfully designed and developed for building-integrated photovoltaic applications. Novel and key technologies of reflective layers and ...

Chin-Yi Tsai, Chin-Yao Tsai

2014-01-01T23:59:59.000Z

268

WORKING QUANTUM EFFICIENCY OF CDTE SOLAR CELL Zimeng Cheng  

E-Print Network (OSTI)

in -Si thin film solar cells because there are more defects and surface effects. Figure 1. The diode darkWORKING QUANTUM EFFICIENCY OF CDTE SOLAR CELL Zimeng Cheng 1 , Kwok Lo 2 , Jingong Pan 1 , Dongguo Chen 1 , Tao Zhou 2 , Qi Wang 3 , George E. Georgiou 1 , Ken K. Chin 1 1 Apollo CdTe Solar Energy

269

In-situ heavily p-type doping of over 10{sup 20} cm{sup -3} in semiconducting BaSi{sub 2} thin films for solar cells applications  

SciTech Connect

B-doped p-BaSi{sub 2} layer growth by molecular beam epitaxy and the influence of rapid thermal annealing (RTA) on hole concentrations were presented. The hole concentration was controlled in the range between 10{sup 17} and 10{sup 20} cm{sup -3} at room temperature by changing the temperature of the B Knudsen cell crucible. The acceptor level of the B atoms was estimated to be approximately 23 meV. High hole concentrations exceeding 1 Multiplication-Sign 10{sup 20} cm{sup -3} were achieved via dopant activation using RTA at 800 Degree-Sign C in Ar. The activation efficiency was increased up to 10%.

Ajmal Khan, M.; Du, W.; Baba, M.; Nakamura, K.; Suzuno, M.; Toko, K. [Institute of Applied Physics, University of Tsukuba, Tsukuba, Ibaraki 305-8573 (Japan)] [Institute of Applied Physics, University of Tsukuba, Tsukuba, Ibaraki 305-8573 (Japan); Hara, K. O. [Institute for Materials Research, Tohoku University, Sendai, Miyagi 980-8577 (Japan)] [Institute for Materials Research, Tohoku University, Sendai, Miyagi 980-8577 (Japan); Usami, N. [Institute for Materials Research, Tohoku University, Sendai, Miyagi 980-8577 (Japan) [Institute for Materials Research, Tohoku University, Sendai, Miyagi 980-8577 (Japan); Japan Science and Technology Agency, CREST, Chiyoda-ku, Tokyo 102-0075 (Japan); Suemasu, T. [Institute of Applied Physics, University of Tsukuba, Tsukuba, Ibaraki 305-8573 (Japan) [Institute of Applied Physics, University of Tsukuba, Tsukuba, Ibaraki 305-8573 (Japan); Japan Science and Technology Agency, CREST, Chiyoda-ku, Tokyo 102-0075 (Japan)

2013-03-18T23:59:59.000Z

270

Photovoltaic Technology: The Case for Thin-Film Solar Cells  

Science Journals Connector (OSTI)

...reached the stage of large-scale production...allows for deposition of large areas (up to 1-m2-or...fivefold with the VHF plasma method (35); TCO costs...frequency (RF) of 13.56-MHz. [View Larger Version of this Image...

A. Shah; P. Torres; R. Tscharner; N. Wyrsch; H. Keppner

1999-07-30T23:59:59.000Z

271

Photovoltaic Technology: The Case for Thin-Film Solar Cells  

Science Journals Connector (OSTI)

...obtained by plasma-enhanced...the very high frequency (VHF) plasma deposition...at 13.56 MHz and for deposition temperatures...operated at the radio frequency (RF) of 13...with the VHF plasma method...operated at the radio frequency (RF) of 13.56-MHz. [View...

A. Shah; P. Torres; R. Tscharner; N. Wyrsch; H. Keppner

1999-07-30T23:59:59.000Z

272

Plasmonic metal nanoparticle enhanced thin film organic solar cells  

Science Journals Connector (OSTI)

A novel plasmonic enhanced OSCs with MNPs located at the interface of PEDOT:PSS anode layer and P3HT:PCBM active layer has been proposed and demonstrated theoretically and...

Qu, Di; Liu, Fang; Huang, Yidong; Xie, Wanlu; Xu, Qi; Aoki, Youichi; Tsujimura, Hiroki; Oku, Yoshiaki

273

Boron arsenide thin film solar cell development. Final report  

SciTech Connect

Pyrolytic decomposition of diborane and arsine has been used in attempts to grow polycrystalline BAs films. This method, however, produced only amorphous films for deposition temperatures below 920/sup 0/C and polycrystalline boron subarsenide (B/sub 12/As/sub 2/) flms for deposition temperatures above this value. The amorphous films have been determined to have a significant arsenic content but the actual stoichiometry was not obtained. The films were adherent on single crystal sapphire (0001), (111) silicon, (0001) SiC, and polycrystalline SiC but were found not to be adherent to substrates of fused quartz, tungsten, and molybdenum. It was also found that all films deposited above 650/sup 0/C were p-type while those deposited below 600/sup 0/C were usually n-type. Polycrystalline BAs and B/sub 12/As/sub 2/ was produced by reaction of the elements in a closed tube. The amorphous films showed an indirect or non-direct optical bandgap from 1.0 to 1.7 eV with the most probable values between 1.2 to 1.4 eV. The crystalline BAs powder shows a bandgap near 1.0 eV. Photoconductance time constants have been measured for films deposited on (0001) sapphire and (0001) SiC. Attempts at doping the amorphous films were generally unsuccessful. A polycrystalline powder sample was successfully doped with sulfur. Attempts were made to produce a Schottky barrier diode by evaporating Al dots onto an amorphous film on graphite without a post-evaporation anneal. An MIS structure was also attempted by baking an amorphous film in air at 280/sup 0/C before evaporation of aluminum. Although nonlinear characteristics were obtained, none of the devices showed any photovoltaic response. A p-type amorphous film was deposited on an n-type silicon substrate to form a p-n heterojunction. This device did exhibit a photovoltaic response but it is believed that the photogeneration was occurring primarily in the silicon substrate.

Boone, J.L.; Van Doren, T.P.

1980-09-01T23:59:59.000Z

274

Silicon Nanoparticle Synthesis and Modeling for Thin Film Solar Cells.  

E-Print Network (OSTI)

??Nanometer-scale silicon shows extraordinary electronic and optical properties that are not available for bulk silicon, and many investigations toward applications in optoelectronic devices are being… (more)

Albu, Zahra

2014-01-01T23:59:59.000Z

275

Thermochromic Properties of Nanocrystal-based Thin Films | The...  

NLE Websites -- All DOE Office Websites (Extended Search)

Nanocrystal-based Thin Films Functional coatings that can selectively reflect or transmit near-infrared solar radiation while maintiaining high transmittance for visible light can...

276

Definition: Solar cell | Open Energy Information  

Open Energy Info (EERE)

Solar cell Solar cell (Redirected from Definition:PV cell) Jump to: navigation, search Dictionary.png Solar cell Converts light into electrical energy. Traditional solar cells are made from silicon; second-generation solar cells (thin-film solar cells) are made from amorphous silicon or nonsilicon materials such as cadmium telluride; and third-generation solar cells are being made from variety of new materials, including solar inks, solar dyes, and conductive plastics.[1][2] View on Wikipedia Wikipedia Definition A solar cell (also called a photovoltaic cell) is an electrical device that converts the energy of light directly into electricity by the photovoltaic effect. It is a form of photoelectric cell (in that its electrical characteristics-e.g. current, voltage, or resistance-vary

277

MATERIAL AND PROCESS DEVELOPMENT LEADING TO ECONOMICAL HIGH-PERFORMANCE THIN-FILM SOLID OXIDE FUEL CELLS  

SciTech Connect

This document summarizes the technical progress from September 2002 to March 2003 for the program, Material and Process Development Leading to Economical High-Performance Thin-Film Solid Oxide Fuel Cells, contract number DE-AC26-00NT40711. The causes have been identified for the unstable open circuit voltage (OCV) and low performance exhibited by the anode-supported lanthanum gallate based cells from the earlier development. Promising results have been obtained in the area of synthesis of electrolyte and cathode powders, which showed excellent sintering and densification at low temperatures. The fabrication of cells using tapecalendering process for anode-supported thin lanthanum gallate electrolyte cells and their performance optimization is in progress.

Jie Guan; Atul Verma; Nguyen Minh

2003-04-01T23:59:59.000Z

278

Efficient Light Trapping in Inverted Nanopyramid Thin Crystalline Silicon Membranes for Solar Cell Applications  

E-Print Network (OSTI)

Thin-film crystalline silicon (c-Si) solar cells with light-trapping structures can enhance light absorption within the semiconductor absorber layer and reduce material usage. Here we demonstrate that an inverted nanopyramid ...

Mavrokefalos, Anastassios

279

Development of Cu(2)ZnSn(S,Se)(4) based solar cells.  

E-Print Network (OSTI)

??Thin film solar cell technologies are rapidly developing, and chalcopyrite (Cu(In,Ga)Se2) based devices have demonstrated the highest power conversion efficiencies on the laboratory scale. However,… (more)

Fairbrother, Andrew

2014-01-01T23:59:59.000Z

280

ThinFilms  

NLE Websites -- All DOE Office Websites (Extended Search)

Thin Films Thin Films Manufacturing Technologies The Thin Film laboratory provides a variety of vapor deposition processes and facilities for cooperative research and development. Available capabilities include electron beam evaporation, sputter deposition, reactive deposi- tion processes, atomic layer deposition (ALD) and specialized techniques such as focused ion beam induced chemical vapor deposition. Equipment can be reconfigured for prototyping, or it can be dedicated to long-term research, development and manufacturing. Most sputter and evaporative deposition systems are capable of depositing multiple materials. Deposition capabilities and expertise * Deposition of a large variety of thin film mate- rials * Multiple sputter deposition systems - Capable of depositing four materials in a

Note: This page contains sample records for the topic "thin-film solar cell" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

NREL: Photovoltaics Research - Thin Film Photovoltaic Partnership Project  

NLE Websites -- All DOE Office Websites (Extended Search)

Thin Film Photovoltaic Partnership Project Thin Film Photovoltaic Partnership Project NREL's Thin Film Photovoltaic (PV) Partnership Project led R&D on emerging thin-film solar technologies in the United States from 1994 to 2009. The project made many advances in thin-film PV technologies that allowed the United States to attain world leadership in this area of solar technology. Three national R&D teams focused on thin-film semiconductor materials: amorphous silicon (a-Si), cadmium telluride (CdTe), and copper indium gallium diselenide (CIGS) and its alloys. The Module Reliability Team and Environmental Health and Safety Team were crosscutting. The teams comprised researchers from the solar industry, academia, and NREL who focused their efforts on improving materials, devices, and manufacturing processes-all

282

Highly conductive p-type microcrystalline silicon thin films  

SciTech Connect

In the development of thin film solar cells there is presently an increasing interest in microcrystalline silicon, deposited at low temperatures (200--400 C). The plasma deposition of boron doped microcrystalline films was optimized with respect to crystallinity and doping efficiency. High room temperature conductivities up to 39 Scm{sup {minus}1} were achieved under condition when the energy of positive ions impinging on the growth surface is minimized.

Heintze, M.; Schmitt, M. [Univ. Stuttgart (Germany). Inst. fuer Physikalische Elektronik

1996-12-31T23:59:59.000Z

283

Preparation Of Copper Indium Gallium Diselenide Films For Solar Cells  

DOE Patents (OSTI)

High quality thin films of copper-indium-gallium-diselenide useful in the production of solar cells are prepared by electrodepositing at least one of the constituent metals onto a glass/Mo substrate, followed by physical vapor deposition of copper and selenium or indium and selenium to adjust the final stoichiometry of the thin film to approximately Cu(In,Ga)Se.sub.2. Using an AC voltage of 1-100 KHz in combination with a DC voltage for electrodeposition improves the morphology and growth rate of the deposited thin film. An electrodeposition solution comprising at least in part an organic solvent may be used in conjunction with an increased cathodic potential to increase the gallium content of the electrodeposited thin film.

Bhattacharya, Raghu N. (Littleton, CO); Contreras, Miguel A. (Golden, CO); Keane, James (Lakewood, CO); Tennant, Andrew L. (Denver, CO), Tuttle, John R. (Denver, CO); Ramanathan, Kannan (Lakewood, CO); Noufi, Rommel (Golden, CO)

1998-08-08T23:59:59.000Z

284

MATERIAL AND PROCESS DEVELOPMENT LEADING TO ECONOMICAL HIGH-PERFORMANCE THIN-FILM SOLID OXIDE FUEL CELLS  

SciTech Connect

This document summarizes the technical progress from April to September 2003 for the program, Material and Process Development Leading to Economical High-Performance Thin-Film Solid Oxide Fuel Cells, contract number DE-AC26-00NT40711. Characteristics of doped lanthanum gallate (LSGMF) powder suitable for thin electrolyte fabrication have been defined. Bilayers with thin LSGMF electrolyte supported on an anode were fabricated and the fabrication process was improved. Preliminary performance was characterized. High performance cathode material Sr{sub 0.5}Sm{sub 0.5}CoO{sub 3} has been down-selected and is being optimized by modifying materials characteristics and processing parameters. The selected cathode exhibited excellent performance with cathode polarization of {approx}0.23 ohm-cm{sup 2} at 600 C.

Jie Guan; Nguyen Minh

2003-10-01T23:59:59.000Z

285

Definition: Solar cell | Open Energy Information  

Open Energy Info (EERE)

cell cell Jump to: navigation, search Dictionary.png Solar cell Converts light into electrical energy. Traditional solar cells are made from silicon; second-generation solar cells (thin-film solar cells) are made from amorphous silicon or nonsilicon materials such as cadmium telluride; and third-generation solar cells are being made from variety of new materials, including solar inks, solar dyes, and conductive plastics.[1][2] View on Wikipedia Wikipedia Definition A solar cell (also called a photovoltaic cell) is an electrical device that converts the energy of light directly into electricity by the photovoltaic effect. It is a form of photoelectric cell (in that its electrical characteristics-e.g. current, voltage, or resistance-vary when light is incident upon it) which, when exposed to light, can generate

286

Thin film photovoltaic cells having increased durability and operating life and method for making same  

DOE Patents (OSTI)

A solar cell having a copper-bearing absorber is provided with a composite transparent encapsulating layer specifically designed to prevent oxidation of the copper sulfide. In a preferred embodiment, the absorber is a layer of copper sulfide and the composite layer comprises a thin layer of copper oxide formed on the copper sulfide and a layer of encapsulating glass formed on the oxide. It is anticipated that such devices, when exposed to normal operating conditions of various terrestrial applications, can be maintained at energy conversion efficiencies greater than one-half the original conversion efficiency for periods as long as thirty years.

Barnett, Allen M. (Newark, DE); Masi, James V. (Wilmington, DE); Hall, Robert B. (Newark, DE)

1980-12-16T23:59:59.000Z

287

ENI Renewable and Non-conventional Energy Prize 2012 High-efficiency solar cells based on nanophotonic design  

E-Print Network (OSTI)

in the earth's crust. Their nano-solar cell technology is scalable to ultra-high volumes and may help speed up to solar cell design are applicable to other solar cell technologies as well, including thin-film CuInSe2ENI Renewable and Non-conventional Energy Prize 2012 High-efficiency solar cells based

Polman, Albert

288

Simulation of Polycrystalline Cu(In,Ga)Se2 Solar Cells in Two Dimensions Markus Gloeckler, Wyatt K. Metzger1  

E-Print Network (OSTI)

that a plausible reason behind highly efficient thin-film CIGS solar cells ( > 17%) is an inherent valenceSimulation of Polycrystalline Cu(In,Ga)Se2 Solar Cells in Two Dimensions Markus Gloeckler, Wyatt K) solar cells and its effects on solar-cell performance. The simulations predict that (1) for device

Sites, James R.

289

PV prospects: thinPV prospects: thin--film cellsfilm cells Si cell costs  

E-Print Network (OSTI)

of the CdS film · The role of the ZnO/ITO layers · Replacement of CdS/ZnO/ITO with a Schottky barrier Noufi://www.nanosolar.com/technology #12;14 Examination of CIGS cellsExamination of CIGS cells · Vacancy doping of CIGS · The role

Pulfrey, David L.

290

Process Development for High Voc CdTe Solar Cells  

SciTech Connect

This is a cumulative and final report for Phases I, II and III of this NREL funded project (subcontract # XXL-5-44205-10). The main research activities of this project focused on the open-circuit voltage of the CdTe thin film solar cells. Although, thin film CdTe continues to be one of the leading materials for large-scale cost-effective production of photovoltaics, the efficiency of the CdTe solar cells have been stagnant for the last few years. This report describes and summarizes the results for this 3-year research project.

Ferekides, C. S.; Morel, D. L.

2011-05-01T23:59:59.000Z

291

Nanoscale Imaging of Photocurrent and Efficiency in CdTe Solar Cells  

Science Journals Connector (OSTI)

Nanoscale Imaging of Photocurrent and Efficiency in CdTe Solar Cells ... The local collection characteristics of grain interiors and grain boundaries in thin-film CdTe polycrystalline solar cells are investigated using scanning photocurrent microscopy. ... photovoltaics; CdTe; scanning photocurrent microscopy; solar cells; NSOM ...

Marina S. Leite; Maxim Abashin; Henri J. Lezec; Anthony Gianfrancesco; A. Alec Talin; Nikolai B. Zhitenev

2014-10-15T23:59:59.000Z

292

Simulations of solar cell absorption enhancement using resonant modes of a nanosphere array  

E-Print Network (OSTI)

Simulations of solar cell absorption enhancement using resonant modes of a nanosphere array an approach for enhancing the absorption of thin-film amorphous silicon solar cells using periodic on the temporal coupled mode theory. Keywords: Resonant Dielectric Structures, Solar cells, Nanospheres

Grandidier, Jonathan

293

Thin crystalline silicon solar cells based on epitaxial films grown at 165C by RF PECVD  

E-Print Network (OSTI)

1 Thin crystalline silicon solar cells based on epitaxial films grown at 165°C by RF PECVD Romain temperatures. Keywords : Low temperature, epitaxy, PECVD, Si thin film, Solar cell #12;2 1. Introduction: martin.labrune@polytechnique.edu ABSTRACT We report on heterojunction solar cells whose thin intrinsic

294

EEC 289-L Photovoltaics and Solar Cells 3 Units Winter Quarter (Alternate Years)  

E-Print Network (OSTI)

strategies 4. Microcrystalline Si, and effects of defects on PV 5. Thin-Film Solar Cells a. -Si on glass bEEC 289-L Photovoltaics and Solar Cells 3 Units ­ Winter Quarter (Alternate Years) Prerequisite, and third-generation photovoltaics and solar cells, including design, fabrication technology, and grid

295

Solar Cells from Earth-Abundant Semiconductors with Plasmon-Enhanced Light Absorption  

SciTech Connect

Progress is reported in these areas: Plasmonic Light Trapping in Thin Film a-Si Solar Cells; Plasmonic Light Trapping in Thin InGaN Quantum Well Solar Cells; and Earth Abundant Cu{sub 2}O and Zn{sub 3}P{sub 2} Solar Cells.

Atwater, Harry

2012-04-30T23:59:59.000Z

296

Thin film hydrogen sensor  

DOE Patents (OSTI)

A thin film hydrogen sensor includes a substantially flat ceramic substrate with first and second planar sides and a first substrate end opposite a second substrate end; a thin film temperature responsive resistor on the first planar side of the substrate proximate to the first substrate end; a thin film hydrogen responsive metal resistor on the first planar side of the substrate proximate to the fist substrate end and proximate to the temperature responsive resistor; and a heater on the second planar side of the substrate proximate to the first end. 5 figs.

Cheng, Y.T.; Poli, A.A.; Meltser, M.A.

1999-03-23T23:59:59.000Z

297

Thin film hydrogen sensor  

DOE Patents (OSTI)

A thin film hydrogen sensor, includes: a substantially flat ceramic substrate with first and second planar sides and a first substrate end opposite a second substrate end; a thin film temperature responsive resistor on the first planar side of the substrate proximate to the first substrate end; a thin film hydrogen responsive metal resistor on the first planar side of the substrate proximate to the fist substrate end and proximate to the temperature responsive resistor; and a heater on the second planar side of the substrate proximate to the first end.

Cheng, Yang-Tse (Rochester Hills, MI); Poli, Andrea A. (Livonia, MI); Meltser, Mark Alexander (Pittsford, NY)

1999-01-01T23:59:59.000Z

298

May 2003 NREL/CP-520-33933 Amorphous and Thin-Film  

E-Print Network (OSTI)

Roedern, J. Yang, P. Sims, X. Deng, V. Dalal, D. Carlson, and T. Wang Presented at the National and Thin-Film Silicon Brent P. Nelson,1 Harry A. Atwater,2 Bolko von Roedern,1 Jeff Yang,3 Paul Sims,4. (c) "Thin Silicon-on-Ceramic Solar Cells" by Paul Sims. (d

Deng, Xunming

299

Solar Cells, 14 (1985) 289 -291 289 Short Communication  

E-Print Network (OSTI)

for CdS/CuInSe2 thin film solar cells by electron beam assisted chemical vapor deposition B. J. STANBERYSolar Cells, 14 (1985) 289 - 291 289 Short Communication Silicon nitride anti-reflection coatings; accepted January 2, 1985) The electron beam assisted chemical vapor deposition of silicon nitride anti

Rocca, Jorge J.

300

Dye-sensitized solar cells  

DOE Patents (OSTI)

A low-cost dye-sensitized Schottky barrier solar cell comprised of a substrate of semiconductor with an ohmic contact on one face, a sensitizing dye adsorbed onto the opposite face of the semiconductor, a transparent thin-film layer of a reducing agent over the dye, and a thin-film layer of metal over the reducing agent. The ohmic contact and metal layer constitute electrodes for connection to an external circuit and one or the other or both are made transparent to permit light to penetrate to the dye and be absorbed therein for generating electric current. The semiconductor material chosen to be the substrate is one having a wide bandgap and which therefore is transparent; the dye selected is one having a ground state within the bandgap of the semiconductor to generate carriers in the semiconductor, and a first excited state above the conduction band edge of the semiconductor to readily conduct electrons from the dye to the semiconductor; the reducing agent selected is one having a ground state above the ground state of the sensitizer to provide a plentiful source of electrons to the dye during current generation and thereby enhance the generation; and the metal for the thin-film layer of metal is selected to have a Fermi level in the vicinity of or above the ground state of the reducing agent to thereby amply supply electrons to the reducing agent.

Skotheim, Terje A. [Berkeley, CA

1980-03-04T23:59:59.000Z

Note: This page contains sample records for the topic "thin-film solar cell" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Dye-sensitized solar cells  

DOE Patents (OSTI)

A low-cost dye-sensitized Schottky barrier solar cell is comprised of a substrate of semiconductor with an ohmic contact on one face, a sensitizing dye adsorbed onto the opposite face of the semiconductor, a transparent thin-film layer of a reducing agent over the dye, and a thin-film layer of metal over the reducing agent. The ohmic contact and metal layer constitute electrodes for connection to an external circuit and one or the other or both are made transparent to permit light to penetrate to the dye and be absorbed therein for generating electric current. The semiconductor material chosen to be the substrate is one having a wide bandgap and which therefore is transparent; the dye selected is one having a ground state within the bandgap of the semiconductor to generate carriers in the semiconductor, and a first excited state above the conduction band edge of the semiconductor to readily conduct electrons from the dye to the semiconductor; the reducing agent selected is one having a ground state above the ground state of the sensitizer to provide a plentiful source of electrons to the dye during current generation and thereby enhance the generation; and the metal for the thin-film layer of metal is selected to have a Fermi level in the vicinity of or above the ground state of the reducing agent to thereby amply supply electrons to the reducing agent. 3 figs.

Skotheim, T.A.

1980-03-04T23:59:59.000Z

302

Organic thin film prehistory: looking towards solution phase aggregation |  

NLE Websites -- All DOE Office Websites (Extended Search)

Organic thin film prehistory: looking towards solution phase aggregation Organic thin film prehistory: looking towards solution phase aggregation Wednesday, November 6, 2013 - 3:00pm SLAC, Redtail Hawk Conference Room 108A Christopher Tassone, SSRL Polymer bulk heterojunction (BHJ) solar cells have attracted significant attention in industry and academia because of their potential for achieving large-area, light-weight, and flexible photovoltaic devices through cost-effective solution deposition techniques. These devices consist of a blend of an absorbing polymer and an electron accepting fullerene, the molecular packing and phase segregation of which heavily influence power conversion efficiency by effecting important processes such as exciton splitting, charge transport, and recombination. Understanding and utilization of molecular interactions to predicatively control the

303

AxunTek Solar Energy | Open Energy Information  

Open Energy Info (EERE)

AxunTek Solar Energy Jump to: navigation, search Name: AxunTek Solar Energy Place: Taiwan Sector: Solar Product: Taiwan-based CIGS thin film solar cell producer. References:...

304

SunShot Initiative: Dye-Sensitized Solar Cells  

NLE Websites -- All DOE Office Websites (Extended Search)

Dye-Sensitized Solar Cells to Dye-Sensitized Solar Cells to someone by E-mail Share SunShot Initiative: Dye-Sensitized Solar Cells on Facebook Tweet about SunShot Initiative: Dye-Sensitized Solar Cells on Twitter Bookmark SunShot Initiative: Dye-Sensitized Solar Cells on Google Bookmark SunShot Initiative: Dye-Sensitized Solar Cells on Delicious Rank SunShot Initiative: Dye-Sensitized Solar Cells on Digg Find More places to share SunShot Initiative: Dye-Sensitized Solar Cells on AddThis.com... Concentrating Solar Power Photovoltaics Research & Development Crystalline Silicon Thin Films Multijunctions Organic Photovoltaics Dye-Sensitized Solar Cells Competitive Awards Systems Integration Balance of Systems Dye-Sensitized Solar Cells Graphic showing the seven layers of a dye-sensitized PV cell: electrode, hole conductor, dope, TiO2, blocking layer, transparent conductive oxide, and glass.

305

E-Print Network 3.0 - analyzing solar reflective Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

Market Studies Collection: Power Transmission, Distribution and Plants 3 SIMULATION OF LIGHT IN-COUPLING AT OBLIQUE ANGLES IN THIN-FILM SILICON SOLAR CELLS Summary: roughness in...

306

Tuning the transport properties of layer-by-layer thin films for fuel cell applications  

E-Print Network (OSTI)

The increasing global focus on alternative energy sources has led to a renewed interest in fuel cells. For low power, portable applications, direct methanol fuel cells (DMFCs) are the most promising type of fuel cell. DMFCs ...

Ashcraft, James Nathan

2009-01-01T23:59:59.000Z

307

Adaptation of thin-film photovoltaic technology for use in space  

SciTech Connect

The anticipated deployment of large numbers of satellites in low earth orbit (LEO) for global telecommunications networks renews interest in producing solar power systems that are lightweight, robust, resistant to radiation damage, and relatively inexpensive. Promising near term thin-film candidates are amorphous silicon (a-Si), cadmium telluride (CdTe), and copper indium gallium diselenide (CIGS). The authors discuss the modifications that are necessary to adapt terrestrial thin-film technology for use in space. The authors characterize expected module performance and present results of tests performed on sample cells. They consider the possibility of achieving aggressive cost, weight, and performance targets through the use of thin-film photovoltaic (PV) technology.

Fairbanks, E.S.; Gates, M.T. [Boeing Commercial Space Co., Seattle, WA (United States)

1997-12-31T23:59:59.000Z

308

NMR characterization of thin films  

DOE Patents (OSTI)

A method, apparatus, and system for characterizing thin film materials. The method, apparatus, and system includes a container for receiving a starting material, applying a gravitational force, a magnetic force, and an electric force or combinations thereof to at least the starting material, forming a thin film material, sensing an NMR signal from the thin film material and analyzing the NMR signal to characterize the thin film of material.

Gerald, II, Rex E. (Brookfield, IL); Klingler, Robert J. (Glenview, IL); Rathke, Jerome W. (Homer Glen, IL); Diaz, Rocio (Chicago, IL); Vukovic, Lela (Westchester, IL)

2008-11-25T23:59:59.000Z

309

Investigation of CdS Nanowires and Planar Films for Enhanced Performance as Window Layers in CdS-CdTe Solar Cell Devices.  

E-Print Network (OSTI)

??Cadmium sulfide (CdS) and cadmium telluride (CdTe) are two leading semiconductor materials used in the fabrication of thin film solar cells of relatively high power… (more)

Chen, Jianhao

2013-01-01T23:59:59.000Z

310

Black Silicon Solar Thin-film Microcells Integrating Top Nanocone Structures for Broadband and Omnidirectional Light-Trapping  

E-Print Network (OSTI)

Recently developed classes of monocrystalline silicon solar microcells (u-cell) can be assembled into modules with characteristics (i.e., mechanically flexible forms, compact concentrator designs, and high-voltage outputs) that would be impossible to achieve using conventional, wafer-based approaches. In this paper, we describe a highly dense, uniform and non-periodic nanocone forest structure of black silicon (bSi) created on optically-thin (30 um) u-cells for broadband and omnidirectional light-trapping with a lithography-free and high-throughput plasma texturizing process. With optimized plasma etching conditions and a silicon nitride passivation layer, black silicon u-cells, when embedded in a polymer waveguiding layer, display dramatic increases of as much as 65.7% in short circuit current, as compared to a bare silicon device. The conversion efficiency increases from 8% to 11.5% with a small drop in open circuit voltage and fill factor.

Xu, Zhida; Brueckner, Eric P; Li, Lanfang; Jiang, Jing; Nuzzo, Ralph G; Liu, Gang L

2014-01-01T23:59:59.000Z

311

Temperature-controlled neutron reflectometry sample cell suitable for study of photoactive thin films  

E-Print Network (OSTI)

Temperature-controlled neutron reflectometry sample cell suitable for study of photoactive thin design intended for the study of photoactive materials using neutron reflectometry. The cell can maintain of that atom. More details on the technique of neutron reflectometry can be found elsewhere.2 Neutron

Barrett, Christopher

312

CHEMICAL MAKERS INVEST IN SOLAR  

Science Journals Connector (OSTI)

CHEMICAL MAKERS INVEST IN SOLAR ... CAPACITY BOOST: New projects target raw materials and research ... The projects will increase capacity and advance research for chemical components of both traditional polysilicon solar cells and newer thin-film modules. ...

MELODY VOITH

2008-12-22T23:59:59.000Z

313

Fabrication of Yttria stabilized zirconia thin films on poroussubstrates for fuel cell applications  

SciTech Connect

A process for the deposition of yttria stabilized zirconia (YSZ) films, on porous substrates, has been developed. These films have possible applications as electrolyte membranes in fuel cells. The films were deposited from colloidal suspensions through the vacuum infiltration technique. Films were deposited on both fully sintered and partially sintered substrates. A critical cracking thickness for the films was identified and strategies are presented to overcome this barrier. Green film density was also examined, and a method for improving green density by changing suspension pH and surfactant was developed. A dependence of film density on film thickness was observed, and materials interactions are suggested as a possible cause. Non-shorted YSZ films were obtained on co-fired substrates, and a cathode supported solid oxide fuel cell was constructed and characterized.

Leming, Andres

2003-06-16T23:59:59.000Z

314

Epitaxial growth of CdTe oriented thin films, infrared characterization and possible applications to photo-voltaic cells  

E-Print Network (OSTI)

573 Epitaxial growth of CdTe oriented thin films, infrared characterization and possible décembre 1979, accepté le 12 décembre 1979) Résumé. 2014 Des films minces orientés de CdTe, d de CdTe cubique dont la face (111), polie mécaniquement et décapée chimiquement, est préalablement

Paris-Sud XI, Université de

315

CRYOGENIC CATHODOLUMINESCENCE FROM CuxAg1-xInSe2 THIN FILMS Angel R. Aquino  

E-Print Network (OSTI)

CRYOGENIC CATHODOLUMINESCENCE FROM CuxAg1-xInSe2 THIN FILMS Angel R. Aquino 1 , Angus A. Rockett 1 deposited by a hybrid magnetron sputtering/evaporation process over a range of x values. Cryogenic for solar cell applications. Here we present results of the first cryogenic CL experiments with spectral

Rockett, Angus

316

E-Print Network 3.0 - ag sn thin-film Sample Search Results  

NLE Websites -- All DOE Office Websites (Extended Search)

solar... on a conventional metal-oxide transparent electrode. Thin-film optoelectronic devices make ... Source: Cui, Yi - Department of Materials Science and Engineering,...

317

New top layer reduces the"wiggle"that degrades the conversion of light to electricity in solar cells by absorbing  

E-Print Network (OSTI)

New top layer reduces the"wiggle"that degrades the conversion of light to electricity in solar cells by absorbing light within a specific wavelength. Today's thin-film solar cells could not function light to pass through to the cell's active layers. Until recently, TCOs were seen as a necessary

318

EELS measurements of boron concentration profiles in p-a-Si and nip a-Si solar cells Bas B. Van Aken a,  

E-Print Network (OSTI)

that the optimum efficiency in nip solar cells is obtained when the p-a-SiC band gap is slightly larger than efficiency nip solar cells based on amorphous (a- Si:H) and microcrystalline (c-Si:H) silicon thin films efficiency Si solar cells, it is very important to control and limit the diffusion of B and C atoms

Dunin-Borkowski, Rafal E.

319

Thin film hydrogen sensor  

DOE Patents (OSTI)

A hydrogen sensor element comprises an essentially inert, electrically-insulating substrate having a thin-film metallization deposited thereon which forms at least two resistors on the substrate. The metallization comprises a layer of Pd or a Pd alloy for sensing hydrogen and an underlying intermediate metal layer for providing enhanced adhesion of the metallization to the substrate. An essentially inert, electrically insulating, hydrogen impermeable passivation layer covers at least one of the resistors, and at least one of the resistors is left uncovered. The difference in electrical resistances of the covered resistor and the uncovered resistor is related to hydrogen concentration in a gas to which the sensor element is exposed.

Lauf, Robert J. (Oak Ridge, TN); Hoffheins, Barbara S. (Knoxville, TN); Fleming, Pamela H. (Oak Ridge, TN)

1994-01-01T23:59:59.000Z

320

Annealed CVD molybdenum thin film surface  

DOE Patents (OSTI)

Molybdenum thin films deposited by pyrolytic decomposition of Mo(CO).sub.6 attain, after anneal in a reducing atmosphere at temperatures greater than 700.degree. C., infrared reflectance values greater than reflectance of supersmooth bulk molybdenum. Black molybdenum films deposited under oxidizing conditions and annealed, when covered with an anti-reflecting coating, approach the ideal solar collector characteristic of visible light absorber and infrared energy reflector.

Carver, Gary E. (Tucson, AZ); Seraphin, Bernhard O. (Tucson, AZ)

1984-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "thin-film solar cell" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Energy collection and charge transfer processes in thin-film photocells and photoelectrochemical cells. Final technical report, July 1, 1980-June 30, 1981  

SciTech Connect

Instrumentation was set up for time-resolved fluorescence studies. Fluorescence decay time of tris(2,2'-bipyridyl)-ruthenium in polyvinyl alcohol thin film was measured with and without tetrabromo-o-benzoquinone (TBBQ). Long-range interaction of /sup 1/FA* and TBBQ was observed. Instrumentation was set up for time resolved resonance Raman studies of excited state species in thin film systems. Electrochemical and photoelectrochemical studies were made of thin film phthalocyanine electrodes.

Tachikawa, H.

1983-12-02T23:59:59.000Z

322

Hybrid Thin Film Deposition System | EMSL  

NLE Websites -- All DOE Office Websites (Extended Search)

Hybrid Thin Film Deposition System Hybrid Thin Film Deposition System Only available at EMSL, the Discovery Deposition System has been customized to be a fully automated...

323

Predicted roles of defects on band offsets and energetics at CIGS (Cu(In,Ga)Se2/CdS) solar cell interfaces and implications for improving performance  

E-Print Network (OSTI)

, and in- deed the global operating capacity for solar photovoltaics is increasing steadily.1 CurrentlyPredicted roles of defects on band offsets and energetics at CIGS (Cu(In,Ga)Se2/CdS) solar cell ZnO sputtering on the performance of Cu(In,Ga)Se2 thin film solar cells Appl. Phys. Lett. 105, 083906

Goddard III, William A.

324

Polycrystalline CdTe Solar Cells on Buffered Commercial TCO-Coated Glass with Efficiencies Above 15%  

SciTech Connect

EPIR Technologies, Inc. reports the production of thin film polycrystalline CdTe devices with National Renewable Energy Laboratory (NREL)-verified efficiencies above 15%. While previous reporting of high efficiency poly-CdTe solar cells utilized high-temperature technical glass, EPIR's cells were produced on commercially-available conductive glass. The devices exhibit fill factors up to 77% and short-circuit current densities around 24 mA/cm{sup 2}. EPIR developed a robust process for producing thin film CdTe solar cells through implementation of a high resistivity SnO{sub 2} buffer layer and optimization of the CdS window layer thickness. The effects of the high resistivity buffer layer on device performance were investigated, demonstrating improved overall performance and yield. To our knowledge, these are among the highest efficiencies yet reported and NREL-verified for a thin film CdTe solar cell fabricated using commercial conductive glass.

Banai, R.; Blissett, C.; Buurma, C.; Colegrove, E.; Bechmann, P.; Ellsworth, J.; Morley, M.; Barnes, S.; Lennon, C.; Gilmore, C.; Dhere, R.; Bergeson, J.; Scott, M.; Gessert, T.

2011-01-01T23:59:59.000Z

325

Scale Up of Extended Thin Film Electrocatalyst Structures (ETFECS) (Fact Sheet), Hydrogen and Fuel Cell Technical Highlights (HFCTH), NREL (National Renewable Energy Laboratory)  

NLE Websites -- All DOE Office Websites (Extended Search)

3796 * January 2012 3796 * January 2012 Scale Up of Extended Thin Film Electrocatalyst Structures (ETFECS) Project: Fuel Cell R&D NREL Team: Hydrogen Technologies & Systems Center and Chemical and Materials Science Center Accomplishment: NREL has synthesized >1 gram of platinum (Pt) ETFECS (nanotubes) for use as novel fuel cell catalysts. These materials represent the cumulative yield of four individual batch syntheses (each >250 milligrams yield). The average relevant physical and electrochemical properties of the four batches (when tested with graphitized carbon nanofibers to aid dispersion) are: * Electrochemically available surface area (ECA) of 47.0 m 2 /g Pt * Specific activity (i s 0.9V(IR free) ) of 820 μA/cm 2 Pt * Mass activity (i

326

Thin film photovoltaic panel and method  

DOE Patents (OSTI)

A thin film photovoltaic panel includes a backcap for protecting the active components of the photovoltaic cells from adverse environmental elements. A spacing between the backcap and a top electrode layer is preferably filled with a desiccant to further reduce water vapor contamination of the environment surrounding the photovoltaic cells. The contamination of the spacing between the backcap and the cells may be further reduced by passing a selected gas through the spacing subsequent to sealing the backcap to the base of the photovoltaic panels, and once purged this spacing may be filled with an inert gas. The techniques of the present invention are preferably applied to thin film photovoltaic panels each formed from a plurality of photovoltaic cells arranged on a vitreous substrate. The stability of photovoltaic conversion efficiency remains relatively high during the life of the photovoltaic panel, and the cost of manufacturing highly efficient panels with such improved stability is significantly reduced.

Ackerman, Bruce (El Paso, TX); Albright, Scot P. (El Paso, TX); Jordan, John F. (El Paso, TX)

1991-06-11T23:59:59.000Z

327

CFN | Thin Films Group  

NLE Websites -- All DOE Office Websites (Extended Search)

Materials Synthesis and Characterization Facility Materials Synthesis and Characterization Facility Thin-Film Processing Facility Online Manager (FOM) website FOM manual ESR for lab 1L32 (High-Resolution SEM and x-ray microanalysis) CFN Operations Safety Awareness (COSA) form for 1L32 (ESR #1) Technical article on LABE detector (Analytical SEM) Request form for off-hours access (.doc, First time only, renewals done via email) Lab Tool capabilities Primary contact Training schedule Backup contact Booking calendar Booking rules SOP 1L32 Analytical SEM Camino Thurs 10-12 PM Stein FOM yes yes Hitachi S-4800 SEM Stein Tues 1-3 PM Black FOM no yes booking calendar: yes = need to reserve tool time in calendar before using tool booking rules: yes = specific rules exist for reserving tool time SOP = standard operating procedure (basic instructions)

328

Ferromagnetic thin films  

DOE Patents (OSTI)

A ferromagnetic [delta]-Mn[sub 1[minus]x]Ga[sub x] thin film having perpendicular anisotropy is described which comprises: (a) a GaAs substrate, (b) a layer of undoped GaAs overlying said substrate and bonded thereto having a thickness ranging from about 50 to about 100 nanometers, (c) a layer of [delta]-Mn[sub 1[minus]x]Ga[sub x] overlying said layer of undoped GaAs and bonded thereto having a thickness ranging from about 20 to about 30 nanometers, and (d) a layer of GaAs overlying said layer of [delta]-Mn[sub 1[minus]x]Ga[sub x] and bonded thereto having a thickness ranging from about 2 to about 5 nanometers, wherein x is 0.4[+-]0.05. 7 figures.

Krishnan, K.M.

1994-12-20T23:59:59.000Z

329

Light Trapping, Absorption and Solar Energy Harvesting by Artificial Materials  

SciTech Connect

We provide designs of thin-film solar cells utilizing optimized photonic-crystal light-trapping and numerical simulations of their solar-to-electrical power conversion efficiencies.

John, Sajeev [University of Toronto

2014-08-15T23:59:59.000Z

330

Superfast oxygen exchange kinetics on highly epitaxial LaBaCo2O5+? thin films for intermediate temperature solid oxide fuel cells  

Science Journals Connector (OSTI)

Superfast chemical dynamics on highly epitaxial LaBaCo2O5+? (LBCO) heterostructures were systematically studied with symmetric half-cell LBCO/Gd0.2Ce0.8O2 (GCO):Y0.08Zr0.92O2 (YSZ)/LBCO heterostructures on (001) LaAlO3. The electrochemical impedance spectroscopy measurements reveal that the LBCO film electrodes have an ultralow polarization resistance as low as 0.11 ??cm2 at 600 °C in air a superfast surface exchange coefficient of 0.017 cm/s at 600° and an extremely low activation energy value of 0.49 eV. These excellent physical chemistry properties and superfast chemical dynamics on the highly epitaxial LBCO thin films are considered to be somewhat related to the structure entropy of the nano ordered oxygen vacancy structure.

Jian Liu; Gregory Collins; Ming Liu; Chonglin Chen

2013-01-01T23:59:59.000Z

331

Solar cells  

DOE Patents (OSTI)

Organic photosensitive optoelectronic devices are disclosed. The devises are thin-film crystalline organic optoelectronic devices capable of generating a voltage when exposed to light, and prepared by a method including the steps of: depositing a first organic layer over a first electrode; depositing a second organic layer over the first organic layer; depositing a confining layer over the second organic layer to form a stack; annealing the stack; and finally depositing a second electrode over the second organic layer.

Peumans, Peter; Uchida, Soichi; Forrest, Stephen R.

2013-06-18T23:59:59.000Z

332

Temperature Dependence of Sputtered Conductive Carbon Thin Films Bull. Korean Chem. Soc. 2011, Vol. 32, No. 3 939 DOI 10.5012/bkcs.2011.32.3.939  

E-Print Network (OSTI)

°C to 700 °C in increments of 100 °C using a rapid thermal annealing method by vacuum furnace in the electronic devices such as organic thin film transistor (OTFT), dye-sensitized solar cell (DSSC), and field by a vacuum furnace in vacuum ambient, and the effects of annealing temperature on struc- tural, tribological

Boo, Jin-Hyo

333

Recent improvements in materials for thin GaAs and multibandgap solar cells  

SciTech Connect

The High Efficiency Concepts Program at SERI supports research on III-V compound semiconductors with the objective of achieving the maximum attainable photovoltaic conversion efficiencies for terrestrial solar electric power. The outcome of this research may also affect the future of space photovoltaic cells. While the interest in thin-film, high-efficiency solar cells for terrestrial applications is driven principally by consideration of system costs, such cells would also improve the power density of space power arrays.

Benner, J.P.

1985-05-01T23:59:59.000Z

334

FLEXIBLE CdTe SOLAR CELLS BY A LOW TEMPERATURE PROCESS ON ITO/ZnO COATED A. Salavei, I. Rimmaudo, F. Piccinelli1  

E-Print Network (OSTI)

FLEXIBLE CdTe SOLAR CELLS BY A LOW TEMPERATURE PROCESS ON ITO/ZnO COATED POLYMERS A. Salavei, I of a deposition process for flexible CdTe devices on ITO/ZnO coated polymers. Optimization of fabrication process will be discussed. Keywords: Flexible Substrate, CdTe, ITO, Laser Processing, Thin Film Solar Cell 1 INTRODUCTION

Romeo, Alessandro

335

Spectroscopic ellipsometry characterization of thin-film silicon nitride  

SciTech Connect

We have measured and analyzed the optical characteristics of a series of silicon nitride thin films prepared by plasma-enhanced chemical vapor deposition on silicon substrates for photovoltaic applications. Spectroscopic ellipsometry measurements were made by using a two-channel spectroscopic polarization modulator ellipsometer that measures N, S, and C data simultaneously. The data were fit to a model consisting of air / roughness / SiN / crystalline silicon. The roughness was modeled using the Bruggeman effective medium approximation, assuming 50% SiN, 50% voids. The optical functions of the SiN film were parameterized using a model by Jellison and Modine. All the {Chi}{sup 2} are near 1, demonstrating that this model works extremely well for all SiN films. The measured dielectric functions were used to make optimized SiN antireflection coatings for crystalline silicon solar cells.

Jellison, G.E. Jr.; Modine, F.A. [Oak Ridge National Lab., TN (United States); Doshi, P.; Rohatgi, A. [Georiga Inst. of Technology, Atlanta, GA (United States)

1997-05-01T23:59:59.000Z

336

T Solar Global SA | Open Energy Information  

Open Energy Info (EERE)

T-Solar Global SA Place: Madrid, Spain Zip: 28042 Product: Spain-based thin-film silicon PV cell and module maker, using Applied Materials equipment. The firm is also a major...

337

Thin-film Lithium Batteries  

NLE Websites -- All DOE Office Websites (Extended Search)

Thin-Film Battery with Lithium Anode Courtesy of Oak Ridge National Laboratory, Materials Science and Technology Division Thin-Film Lithium Batteries Resources with Additional Information The Department of Energy's 'Oak Ridge National Laboratory (ORNL) has developed high-performance thin-film lithium batteries for a variety of technological applications. These batteries have high energy densities, can be recharged thousands of times, and are only 10 microns thick. They can be made in essentially any size and shape. Recently, Teledyne licensed this technology from ORNL to make batteries for medical devices including electrocardiographs. In addition, new "textured" cathodes have been developed which have greatly increased the peak current capability of the batteries. This greatly expands the potential medical uses of the batteries, including transdermal applications for heart regulation.'

338

Excitonic Solar Cells  

Science Journals Connector (OSTI)

Excitonic Solar Cells ... Existing types of solar cells may be divided into two distinct classes:? conventional solar cells, such as silicon p?n junctions, and excitonic solar cells, XSCs. ... Most organic-based solar cells, including dye-sensitized solar cells, DSSCs, fall into the category of XSCs. ...

Brian A. Gregg

2003-05-01T23:59:59.000Z

339

Thin Film CIGS and CdTe Photovoltaic Technologies: Commercialization, Critical Issues, and Applications; Preprint  

SciTech Connect

We report here on the major commercialization aspects of thin-film photovoltaic (PV) technologies based on CIGS and CdTe (a-Si and thin-Si are also reported for completeness on the status of thin-film PV). Worldwide silicon (Si) based PV technologies continues to dominate at more than 94% of the market share, with the share of thin-film PV at less than 6%. However, the market share for thin-film PV in the United States continues to grow rapidly over the past several years and in CY 2006, they had a substantial contribution of about 44%, compared to less than 10% in CY 2003. In CY 2007, thin-film PV market share is expected to surpass that of Si technology in the United States. Worldwide estimated projections for CY 2010 are that thin-film PV production capacity will be more than 3700 MW. A 40-MW thin-film CdTe solar field is currently being installed in Saxony, Germany, and will be completed in early CY 2009. The total project cost is Euro 130 million, which equates to an installed PV system price of Euro 3.25/-watt averaged over the entire solar project. This is the lowest price for any installed PV system in the world today. Critical research, development, and technology issues for thin-film CIGS and CdTe are also elucidated in this paper.

Ullal, H. S.; von Roedern, B.

2007-09-01T23:59:59.000Z

340

Effect of Au, Ag and Cu thin films' thickness on the electrical parameters of metal-porous silicon direct hydrogen fuel cell  

Science Journals Connector (OSTI)

Abstract The effect of the thickness of the gold, silver and cupper films on the electrical properties such as open circuit voltage (Voc) and short circuit current (Isc), in the direct hydrogen fuel cell, which uses water as a source of hydrogen, is studied by fabricating Metal/Porous Silicon/n-Silicon/Indium structures. The Porous Silicon (PS) layer on n-type (111) oriented silicon wafers were prepared by anodization. The thin films of Au or Ag or Cu with different thicknesses between 120 and 600 nm were deposited onto the PS surface by the electron-beam technique. The obtained results indicated that Voc and Isc, strongly depend on the Au, Ag and Cu layer thicknesses. The Au/PS/n-Si structure generated highest Voc and Isc values for all thicknesses of Au film. The best values of Voc and Isc were obtained at 325 nm as 0.89 V and 0.021 mA for Au, at 350 nm as 0.75 V and 0.017 mA for Ag, at 350 nm as 0.50 V and 0.010 mA, respectively.

Cigdem Oruc; Sevinc Guler

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "thin-film solar cell" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

DIRECT EVIDENCE OF MG-ZN-P ALLOY FORMATION IN MG/ZN3P2 SOLAR CELLS Gregory M. Kimball  

E-Print Network (OSTI)

Te, CIGS, a-Si) for thin film photovoltaics. The record solar energy conversion efficiency for Zn3P2 cells] or liquid contacts,[5] with Mg/Zn3P2 Schottky diodes having exhibited >6% solar energy-conversion efficiency], and long (5-10 m) minority-carrier diffusion lengths [2]. To date, Zn3P2 has been produced almost

Kimball, Gregory

342

Vertically Aligned Nanocomposite Thin Films  

E-Print Network (OSTI)

nanocomposite oxides have attracted extensive research interest. Nanocomposites consist of nanosized particles embedded in different materials matrix.8 In recent years, high quality nanocrystalline materials have shown novel physical, chemical, magnetic....................................... 9 1.2.3 Physical properties of oxide thin films........................ 12 1.2.3.1 Electrical and optical properties................. 13 1.2.3.2 Magnetism and magnetotransport properties...

Bi, Zhenxing

2012-07-16T23:59:59.000Z

343

High open circuit voltages of solar cells based on quantum dot and dye hybrid-sensitization  

SciTech Connect

A type of solar cell based on quantum dot (QD) and dye hybrid-sensitized mesoporous TiO{sub 2} film electrode was designed and reported. The electrode was consisted of a TiO{sub 2} nanoparticle (NP) thin film layer sensitized with CdS quantum dot (QD) and an amorphous TiO{sub 2} coated TiO{sub 2} NP thin film layer that sensitized with C106 dye. The amorphous TiO{sub 2} layer was obtained by TiCl{sub 4} post-treatment to improve the properties of solar cells. Research showed that the solar cells fabricated with as-prepared hybrid-sensitized electrode exhibited excellent photovoltaic performances and a fairly high open circuit voltage of 796?mV was achieved.

Zhao, Yujie; Zhao, Wanyu; Chen, Jingkuo; Li, Huayang; Fu, Wuyou, E-mail: hari@hpu.edu.cn, E-mail: fuwy56@163.com; Sun, Guang; Cao, Jianliang; Zhang, Zhanying [School of Materials Science and Engineering and Cultivating Base for Key Laboratory of Environment-friendly Inorganic Materials in University of Henan Province, Henan Polytechnic University, Jiaozuo 454000 (China)] [School of Materials Science and Engineering and Cultivating Base for Key Laboratory of Environment-friendly Inorganic Materials in University of Henan Province, Henan Polytechnic University, Jiaozuo 454000 (China); Bala, Hari, E-mail: hari@hpu.edu.cn, E-mail: fuwy56@163.com [School of Materials Science and Engineering and Cultivating Base for Key Laboratory of Environment-friendly Inorganic Materials in University of Henan Province, Henan Polytechnic University, Jiaozuo 454000 (China) [School of Materials Science and Engineering and Cultivating Base for Key Laboratory of Environment-friendly Inorganic Materials in University of Henan Province, Henan Polytechnic University, Jiaozuo 454000 (China); College of Chemistry and Chemical Engineering, Inner Mongolia University for the Nationalities, Tongliao 028043 (China)

2014-01-06T23:59:59.000Z

344

Potential of Thin Films for use in Charged Particle Tracking Detectors  

E-Print Network (OSTI)

Thin Film technology has widespread applications in everyday electronics, notably Liquid Crystal Display screens, solar cells, and organic light emitting diodes. We explore the potential of this technology as charged particle radiation tracking detectors for use in High Energy Physics experiments such as those at the Large Hadron Collider or the Relativistic Heavy Ion Collider. Through modern fabrication techniques, a host of semiconductor materials are available to construct thin, flexible detectors with integrated electronics with pixel sizes on the order of a few microns. We review the material properties of promising candidates, discuss the potential benefits and challenges associated with this technology, and review previously demonstrated applicability as a neutron detector.

Metcalfe, J; Murphy, J; Quevedo, M; Smith, L; Alvarado, J; Gnade, B; Takai, H

2014-01-01T23:59:59.000Z

345

Potential of Thin Films for use in Charged Particle Tracking Detectors  

E-Print Network (OSTI)

Thin Film technology has widespread applications in everyday electronics, notably Liquid Crystal Display screens, solar cells, and organic light emitting diodes. We explore the potential of this technology as charged particle radiation tracking detectors for use in High Energy Physics experiments such as those at the Large Hadron Collider or the Relativistic Heavy Ion Collider. Through modern fabrication techniques, a host of semiconductor materials are available to construct thin, flexible detectors with integrated electronics with pixel sizes on the order of a few microns. We review the material properties of promising candidates, discuss the potential benefits and challenges associated with this technology, and review previously demonstrated applicability as a neutron detector.

J. Metcalfe; I. Mejia; J. Murphy; M. Quevedo; L. Smith; J. Alvarado; B. Gnade; H. Takai

2014-11-06T23:59:59.000Z

346

Elongated nanostructures for radial junction solar cells  

Science Journals Connector (OSTI)

In solar cell technology, the current trend is to thin down the active absorber layer. The main advantage of a thinner absorber is primarily the reduced consumption of material and energy during production. For thin film silicon (Si) technology, thinning down the absorber layer is of particular interest since both the device throughput of vacuum deposition systems and the stability of the devices are significantly enhanced. These features lead to lower cost per installed watt peak for solar cells, provided that the (stabilized) efficiency is the same as for thicker devices. However, merely thinning down inevitably leads to a reduced light absorption. Therefore, advanced light trapping schemes are crucial to increase the light path length. The use of elongated nanostructures is a promising method for advanced light trapping. The enhanced optical performance originates from orthogonalization of the light's travel path with respect to the direction of carrier collection due to the radial junction, an improved anti-reflection effect thanks to the three-dimensional geometric configuration and the multiple scattering between individual nanostructures. These advantages potentially allow for high efficiency at a significantly reduced quantity and even at a reduced material quality, of the semiconductor material. In this article, several types of elongated nanostructures with the high potential to improve the device performance are reviewed. First, we briefly introduce the conventional solar cells with emphasis on thin film technology, following the most commonly used fabrication techniques for creating nanostructures with a high aspect ratio. Subsequently, several representative applications of elongated nanostructures, such as Si nanowires in realistic photovoltaic (PV) devices, are reviewed. Finally, the scientific challenges and an outlook for nanostructured PV devices are presented.

Yinghuan Kuang; Marcel Di Vece; Jatindra K Rath; Lourens van Dijk; Ruud E I Schropp

2013-01-01T23:59:59.000Z

347

Rechargeable thin-film lithium batteries  

SciTech Connect

Rechargeable thin-film batteries consisting of lithium metal anodes, an amorphous inorganic electrolyte, and cathodes of lithium intercalation compounds have been fabricated and characterized. These include Li-TiS{sub 2}, Li-V{sub 2}O{sub 5}, and Li-Li{sub x}Mn{sub 2}O{sub 4} cells with open circuit voltages at full charge of about 2.5 V, 3.7 V, and 4.2 V, respectively. The realization of these robust cells, which can be cycled thousands of times, was possible because of the stability of the amorphous lithium electrolyte, lithium phosphorus oxynitride. This material has a typical composition of Li{sub 2.9}PO{sub 3.3}N{sub 0.46}and a conductivity at 25 C of 2 {mu}S/cm. The thin-film cells have been cycled at 100% depth of discharge using current densities of 5 to 100 {mu}A/cm{sup 2}. Over most of the charge-discharge range, the internal resistance appears to be dominated by the cathode, and the major source of the resistance is the diffusion of Li{sup +} ions from the electrolyte into the cathode. Chemical diffusion coefficients were determined from ac impedance measurements.

Bates, J.B.; Gruzalski, G.R.; Dudney, N.J.; Luck, C.F.; Yu, X.

1993-09-01T23:59:59.000Z

348

Thin-film Rechargeable Lithium Batteries  

DOE R&D Accomplishments (OSTI)

Rechargeable thin films batteries with lithium metal anodes, an amorphous inorganic electrolyte, and cathodes of lithium intercalation compounds have been fabricated and characterized. The cathodes include TiS{sub 2}, the {omega} phase of V{sub 2}O{sub 5}, and the cubic spinel Li{sub x}Mn{sub 2}O{sub 4} with open circuit voltages at full charge of about 2.5 V, 3.7 V, and 4.2 V, respectively. The development of these robust cells, which can be cycled thousands of times, was possible because of the stability of the amorphous lithium electrolyte, lithium phosphorus oxynitride. This material has a typical composition of Li{sub 2.9}PO{sub 3.3}N{sub 0.46} and a conductivity at 25 C of 2 {mu}S/cm. Thin film cells have been cycled at 100% depth of discharge using current densities of 2 to 100 {mu}A/cm{sup 2}. The polarization resistance of the cells is due to the slow insertion rate of Li{sup +} ions into the cathode. Chemical diffusion coefficients for Li{sup +} ions in the three types of cathodes have been estimated from the analysis of ac impedance measurements.

Bates, J. B.; Gruzalski, G. R.; Dudney, N. J.; Luck, C. F.; Yu, X.

1993-11-00T23:59:59.000Z

349

Investigation of Solar Energy Transfer through Plasmonic Au Nanoparticle-doped Sol-derived TiO? Thin Films in Photocatalysis and Photovoltaics /  

E-Print Network (OSTI)

SAN DIEGO Investigation of Solar Energy Transfer through20 Solar Energy Conversion ThroughOF THE THESIS Investigation of Solar Energy Transfer through

Zelinski, Andrew

2013-01-01T23:59:59.000Z

350

New Materials of Co-Doped ZnO for LEDs and Thin Films Solar Cells  

Science Journals Connector (OSTI)

Zr-Al co-doped ZnO were prepared by DC magnetron sputtering on glass substrates. Microstructure, optoelectrical properties of the films were investigated. The films with resistivity...

Yuan, Yuzhen; Wang, Hui

351

High efficiency, low cost, thin film silicon solar cell design and method for making  

DOE Patents (OSTI)

A semiconductor device having a substrate, a conductive intermediate layer deposited onto said substrate, wherein the intermediate layer serves as a back electrode, an optical reflector, and an interface for impurity gettering, and a semiconductor layer deposited onto said intermediate layer, wherein the semiconductor layer has a grain size at least as large as the layer thickness, and preferably about ten times the layer thickness. The device is formed by depositing a metal layer on a substrate, depositing a semiconductive material on the metal-coated substrate to produce a composite structure, and then optically processing the composite structure by illuminating it with infrared electromagnetic radiation according to a unique time-energy profile that first produces pits in the backside surface of the semiconductor material, then produces a thin, highly reflective, low resistivity alloy layer over the entire area of the interface between the semiconductor material and the metal layer, and finally produces a grain-enhanced semiconductor layer. The time-energy profile includes increasing the energy to a first energy level to initiate pit formation and create the desired pit size and density, then ramping up to a second energy level in which the entire device is heated to produce an interfacial melt, and finally reducing the energy to a third energy level and holding for a period of time to allow enhancement in the grain size of the semiconductor layer.

Sopori, Bhushan L. (Denver, CO)

2001-01-01T23:59:59.000Z

352

Deposition and characterization of polycrystalline silicon films on glass for thin film solar cells  

SciTech Connect

The authors deposit phosphorus-doped, amorphous Si by low pressure chemical vapor deposition and subsequently crystallize the films by furnace annealing at a temperature of 600 C. Optical in-situ monitoring allows one to control the crystallization process. Phosphorus doping leads to faster crystallization and a grain size enhancement with a maximum grain size of 15 {micro}m. Using transmission electron microscopy they find a log-normal grain size distribution in their films. They demonstrate that this distribution not only arises from solid phase crystallization of amorphous Si but also from other crystallization processes based on random nucleation and growth. The log-normal grain size distribution seems to be a general feature of polycrystalline semiconductors.

Bergmann, R.B.; Krinke, J.; Strunk, H.P.; Werner, J.H.

1997-07-01T23:59:59.000Z

353

Background and Motivation for Thin-Film Solar-Cell Development  

Science Journals Connector (OSTI)

Development of clean energy resources as an alternative to fossil fuels has become one of the most important tasks assigned to modern science and technology in the 21st century. As was well recognized after th...

Yoshihiro Hamakawa

2004-01-01T23:59:59.000Z

354

To Construct a Technology Roadmap for Technical Trend Recognition on Thin-Film Solar Cell  

Science Journals Connector (OSTI)

To recognize technical trends is essential for the interested parties to understand the development directions of a technology at the industry level. Therefore, a research design has been formed for conducting technology

Tzu-Fu Chiu; Chao-Fu Hong; Leuo-hong Wang…

2011-01-01T23:59:59.000Z

355

Mass Production of Large-Area Integrated Thin-Film Silicon Solar-Cell Module  

Science Journals Connector (OSTI)

A mass-production technology of a-Si single junction modules with stable 8% efficiency had been developed in the Shiga factory of the Kaneka Corporation. In 1999, Kaneka instituted Kaneka Solartech Corporation...

Yoshihisa Tawada; H. Yamagishi; K. Yamamoto

2004-01-01T23:59:59.000Z

356

Technology of Amorphous Silicon Thin Films for Solar Cells and Applications to Power Systems  

Science Journals Connector (OSTI)

Preliminary attempts have been made to grow non-hydrogenated a-Si films by evaporation in an ordinary vacuum system (ultimate pressure 10?6 Toor) fitted with a six-hearth electron gun and a substrate heater. This...

D. Girginoudi; A. Thanailakis; P. Abarian…

1983-01-01T23:59:59.000Z

357

Development of high efficieny CdTe thin-film solar cell.  

E-Print Network (OSTI)

??CdTe films were deposited by sputtering technique and were then carried out by CdCl2 treatment. The SEM micrographs show that the grain sizes of the… (more)

Huang, Yein-rein

2011-01-01T23:59:59.000Z

358

Comparing plasmonic and dielectric gratings for absorption enhancement in thin-film organic solar cells  

Science Journals Connector (OSTI)

We theoretically investigate and compare the influence of square silver gratings and one-dimensional photonic crystal (1D PC) based nanostructures on the light absorption of organic...

Le, Khai Q; Abass, Aimi; Maes, Bjorn; Bienstman, Peter; Alù, Andrea

2012-01-01T23:59:59.000Z

359

BACK CONTACT MONOCRYSTALLINE THIN-FILM SILICON SOLAR CELLS FROM THE POROUS SILICON PROCESS  

E-Print Network (OSTI)

during phosphorous diffusion which is struc- tured afterwards. Figure 1a demonstrates how a Nd:YVO4 laser

360

LAYER TRANSFER OF LARGE AREA MACROPOROUS SILICON FOR MONOCRYSTALLINE THIN-FILM SOLAR CELLS  

E-Print Network (OSTI)

. A phosphorous diffusion with a sheet resistance of 10 /sq. improves the rear contact during electrochemical

Note: This page contains sample records for the topic "thin-film solar cell" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Industrial Upscaling of CdTe/CdS Thin Film Solar Cells , A. Bosioa  

E-Print Network (OSTI)

, with the participation of the Marcegaglia industrial group, IFIS Bank of Venice, the contribution of Ministry 905223. E-mail address: Nicola.Romeo@unipr.it (Nicola Romeo). 1 INTRODUCTION CdTe with its energy gap" which means that only a few microns of the material are needed to absorb 90% of photons with energy

Romeo, Alessandro

362

Biocompatibility of Pristine Graphene Monolayers, Nanosheets and Thin Films  

E-Print Network (OSTI)

There is an increasing interest to develop nanoscale biocompatible graphene structures due to their desirable physicochemical properties, unlimited application opportunities and scalable production. Here we report the preparation, characterization and biocompatibility assessment of novel graphene flakes and their enabled thin films suitable for a wide range of biomedical and electronic applications. Graphene flakes were synthesized by a chemical vapour deposition method or a liquid-phase exfoliation procedure and then thin films were prepared by transferring graphene onto glass coverslips. Raman spectroscopy and transmission electron microscopy confirmed a predominantly monolayer and a high crystalline quality formation of graphene. The biocompatibility assessment of graphene thin films and graphene flakes was performed using cultured human lung epithelial cell line A549 employing a multimodal approach incorporating automated imaging, high content screening, real-time impedance sensing in combination with bio...

Conroy, Jennifer; Smith, Ronan J; Rezvani, Ehsan; Duesberg, Georg S; Coleman, Jonathan N; Volkov, Yuri

2014-01-01T23:59:59.000Z

363

Grain-size effects in nanoscaled electrolyte and cathode thin films for solid oxide fuel cells (SOFC).  

E-Print Network (OSTI)

??Due to their high energy conversion efficiencies and low emissions, Solid Oxide Fuel Cells (SOFCs) show promise as a replacement for combustion-based electrical generators at… (more)

Peters, Christoph

2009-01-01T23:59:59.000Z

364

Photoelectrochemical solar cells  

Science Journals Connector (OSTI)

Photoelectrochemical solar cells ... Plastic Solar Cells: A Multidisciplinary Field To Construct Chemical Concepts from Current Research ... Plastic Solar Cells: A Multidisciplinary Field To Construct Chemical Concepts from Current Research ...

John T. McDevitt

1984-01-01T23:59:59.000Z

365

Nanocrystal Solar Cells  

E-Print Network (OSTI)

Nov, 2005). Chapter 4 Hybrid solar cells with 3-dimensional5 All-inorganic nanocrystal solar cells 5.1 Introduction Inoperation of organic based solar cells and distinguish them

Gur, Ilan

2006-01-01T23:59:59.000Z

366

Nanocrystal Solar Cells  

E-Print Network (OSTI)

inorganic nanocrystal solar cells 5.1 Introduction In recentoperation of organic based solar cells and distinguish themThe organic donor-acceptor solar cell relies on a type II

Gur, Ilan

2006-01-01T23:59:59.000Z

367

Microstructure, residual stress, and mechanical properties of thin film materials for a microfabricated solid oxide fuel cell  

E-Print Network (OSTI)

The microstructure and residual stress of sputter-deposited films for use in microfabricated solid oxide fuel cells are presented. Much of the work focuses on the characterization of a candidate solid electrolyte: Yttria ...

Quinn, David John, Sc. D. Massachusetts Institute of Technology

2006-01-01T23:59:59.000Z

368

Structural and electrochemical characterization of two proton conducting oxide thin films for a microfabricated solid oxide fuel cell  

E-Print Network (OSTI)

The use of proton conducting oxide materials as an electrolyte offers the potential to reduce the operating temperature of a solid oxide fuel cell (SOFC), leading to improved thermal management and material compatibility. ...

Capozzoli, Peter M

2006-01-01T23:59:59.000Z

369

NREL: Energy Analysis - Crystalline Silicon and Thin Film Photovoltaic  

NLE Websites -- All DOE Office Websites (Extended Search)

Crystalline Silicon and Thin Film Photovoltaic Results - Life Cycle Crystalline Silicon and Thin Film Photovoltaic Results - Life Cycle Assessment Harmonization Life Cycle Greenhouse Gas Emissions from Solar Photovoltaics (Fact Sheet) Cover of the Life Cycle Greenhouse Gas Emissions from Solar Photovoltaics factsheet Download the Fact Sheet Over the last 30 years, hundreds of life cycle assessments (LCAs) have been conducted and published for a variety of residential and utility-scale solar photovoltaic (PV) systems with wide-ranging results. The inconsistencies in these results can be attributed to the technologies evaluated-such as differing system designs, real-world versus conceptual systems, or technology improvements over time-and life cycle assessment methods and assumptions. To better understand greenhouse gas (GHG) emissions from commercial

370

Slow light enhanced singlet exciton fission solar cells with a 126% yield of electrons per photon  

SciTech Connect

Singlet exciton fission generates two triplet excitons per absorbed photon. It promises to increase the power extracted from sunlight without increasing the number of photovoltaic junctions in a solar cell. We demonstrate solar cells with an external quantum efficiency of 126% by enhancing absorption in thin films of the singlet exciton fission material pentacene. The device structure exploits the long photon dwell time at the band edge of a distributed Bragg reflector to achieve enhancement over a broad range of angles. Measuring the reflected light from the solar cell establishes a lower bound of 137% for the internal quantum efficiency.

Thompson, Nicholas J.; Congreve, Daniel N.; Baldo, Marc A., E-mail: vmenon@qc.cuny.edu, E-mail: baldo@mit.edu [Energy Frontier Research Center for Excitonics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States); Goldberg, David; Menon, Vinod M., E-mail: vmenon@qc.cuny.edu, E-mail: baldo@mit.edu [Department of Physics, Queens College and Graduate Center, The City University of New York, Flushing, New York 11367 (United States)

2013-12-23T23:59:59.000Z

371

Nanopillar Photovoltaics: Photon Management and Junction Engineering for Next-Generation Solar Cells  

E-Print Network (OSTI)

for efficient photovoltaic cells, Nat. Nanotechnol. 6, 568-for efficient photovoltaic cells, Nat. Nanotechnol. 6, 568-trapping in thin-film photovoltaic cells, Opt. Express 8,

Mariani, Giacomo

2013-01-01T23:59:59.000Z

372

Ceramic Thin Films: Fabrication and Applications  

Science Journals Connector (OSTI)

...SPRAYED CERAMIC COATING, JOURNAL...PB1-XCAXTIO3 THIN-FILM GROWN BY...ELECTRICAL, OPTICAL, AND ELECTRO-OPTIC...fabrication and applications. | Ceramics...controlled optical switches...Ceramic coatings ofalumina...modified by the application of mechanical...material as a thin film cannot only...successive coatings. Although...respect to CVD that the...purposes. Applications of Thin Film Ceramics...

M. Sayer; K. Sreenivas

1990-03-02T23:59:59.000Z

373

Preparation of cuxinygazsen (X=0-2, Y=0-2, Z=0-2, N=0-3) precursor films by electrodeposition for fabricating high efficiency solar cells  

DOE Patents (OSTI)

High quality thin films of copper-indium-gallium-diselenide useful in the production of solar cells are prepared by electrodepositing at least one of the constituent metals onto a glass/Mo substrate, followed by physical vapor deposition of copper and selenium or indium and selenium to adjust the final stoichiometry of the thin film to approximately Cu(In,Ga)Se.sub.2. Using an AC voltage of 1-100 KHz in combination with a DC voltage for electrodeposition improves the morphology and growth rate of the deposited thin film. An electrodeposition solution comprising at least in part an organic solvent may be used in conjunction with an increased cathodic potential to increase the gallium content of the electrodeposited thin film.

Bhattacharya, Raghu N. (Littleton, CO); Contreras, Miguel A. (Golden, CO); Keane, James (Lakewood, CO); Tennant, Andrew L. (Denver, CO); Tuttle, John R. (Denver, CO); Ramanathan, Kannan (Lakewood, CO); Noufi, Rommel (Golden, CO)

1998-03-24T23:59:59.000Z

374

DEVELOPMENT OF HIGH EFFICIENCY FLEXIBLE CdTe SOLAR CELLS A.Romeo, M. Arnold, D.L. Btzner, H. Zogg and A.N. Tiwari*  

E-Print Network (OSTI)

to the solar panel that can be adapted to any kind of shape and is easy to deploy in space. In the last yearsDEVELOPMENT OF HIGH EFFICIENCY FLEXIBLE CdTe SOLAR CELLS A.Romeo, M. Arnold, D.L. Bätzner, H. Zogg Telephone: +44-1509-227031 E-mail: a.n.tiwari@lboro.ac.uk ABSTRACT: Polycrystalline thin film solar cells

Romeo, Alessandro

375

NREL Designs Promising New Oxides for Solar Cells (Fact Sheet)  

SciTech Connect

High-efficiency, thin-film solar cells require electrical contacts with high electrical conductivity, and the top contact must also have high optical transparency. This need is currently met by transparent conducting oxides (TCOs), which conduct electricity but are 90% transparent to visible light. Scientists at the National Renewable Energy Laboratory (NREL) have derived three key design principles for selecting promising materials for TCO contacts. NREL's application of these design principles has resulted in a 10,000-fold improvement in conductivity for one TCO material.

Not Available

2012-04-01T23:59:59.000Z

376

Utilization of Direct and Diffuse Sunlight in a Dye-Sensitized Solar Cell — Silicon Photovoltaic Hybrid Concentrator System  

Science Journals Connector (OSTI)

Nanocrystalline dye-sensitized solar cells (DSSCs) and organic photovoltaics (OPV) are two families of low-cost solar devices that absorb light in the visible part of the spectrum. ... del Cueto, J. A.Comparison of Energy Production and Performance from Flat-Plate Photovoltaic Module Technologies Deployed at Fixed Tilt. ... dye-sensitized solar cell as a top cell for high-energy photons, and a Cu In Ga selenide thin-film bottom cell for lower-energy photons, produces AM 1.5 solar to elec. ...

Greg D. Barber; Paul G. Hoertz; Seung-Hyun Anna Lee; Neal M. Abrams; Janine Mikulca; Thomas E. Mallouk; Paul Liska; Shaik M. Zakeeruddin; Michael Grätzel; Anita Ho-Baillie; Martin A. Green

2011-02-28T23:59:59.000Z

377

Thin film buried anode battery  

DOE Patents (OSTI)

A reverse configuration, lithium thin film battery (300) having a buried lithium anode layer (305) and process for making the same. The present invention is formed from a precursor composite structure (200) made by depositing electrolyte layer (204) onto substrate (201), followed by sequential depositions of cathode layer (203) and current collector (202) on the electrolyte layer. The precursor is subjected to an activation step, wherein a buried lithium anode layer (305) is formed via electroplating a lithium anode layer at the interface of substrate (201) and electrolyte film (204). The electroplating is accomplished by applying a current between anode current collector (201) and cathode current collector (202).

Lee, Se-Hee (Lakewood, CO); Tracy, C. Edwin (Golden, CO); Liu, Ping (Denver, CO)

2009-12-15T23:59:59.000Z

378

Final Report: Sintered CZTS Nanoparticle Solar Cells on Metal Foil; July 26, 2011 - July 25, 2012  

SciTech Connect

This is the final report covering 12 months of this subcontract for research on high-efficiency copper zinc tin sulfide (CZTS)-based thin-film solar cells on flexible metal foil. Each of the first three quarters of the subcontract has been detailed in quarterly reports. In this final report highlights of the first three quarters will be provided and details will be given of the final quarter of the subcontract.

Leidholm, C.; Hotz, C.; Breeze, A.; Sunderland, C.; Ki, W.; Zehnder, D.

2012-09-01T23:59:59.000Z

379

Institute of Photo Electronic Thin Film Devices and Technology...  

Open Energy Info (EERE)

Institute of Photo Electronic Thin Film Devices and Technology of Nankai University Jump to: navigation, search Name: Institute of Photo-Electronic Thin Film Devices and Technology...

380

Thickness Dependency of Thin Film Samaria Doped Ceria for Oxygen...  

NLE Websites -- All DOE Office Websites (Extended Search)

Dependency of Thin Film Samaria Doped Ceria for Oxygen Sensing . Thickness Dependency of Thin Film Samaria Doped Ceria for Oxygen Sensing . Abstract: High temperature oxygen...

Note: This page contains sample records for the topic "thin-film solar cell" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Direct Measurement of Oxygen Incorporation into Thin Film Oxides...  

NLE Websites -- All DOE Office Websites (Extended Search)

Measurement of Oxygen Incorporation into Thin Film Oxides at Room Temperature Upon Ultraviolet Phton Irradiation. Direct Measurement of Oxygen Incorporation into Thin Film Oxides...

382

Zinc oxide thin film acoustic sensor  

SciTech Connect

This paper reports the implementation of (750 nm) thickness of Zinc Oxide (ZnO) thin film for the piezoelectric pressure sensors. The film was prepared and deposited employing the spray pyrolysis technique. XRD results show that the growth preferred orientation is the (002) plane. A polycrystalline thin film (close to mono crystallite like) was obtained. Depending on the Scanning Electron Microscopy photogram, the film homogeneity and thickness were shown. The resonance frequency measured (about 19 kHz) and the damping coefficient was calculated and its value was found to be about (2.5538), the thin film be haves as homogeneous for under and over damped. The thin film pressure sensing was approximately exponentially related with frequency, the thin film was observed to has a good response for mechanical stresses also it is a good material for the piezoelectric properties.

Mohammed, Ali Jasim; Salih, Wafaa Mahdi; Hassan, Marwa Abdul Muhsien; Nusseif, Asmaa Deiaa; Kadhum, Haider Abdullah [Department of Physics , College of Science, Al-Mustansiriyah University, Baghdad (Iraq); Mansour, Hazim Louis [Department of Physics , College of Education, Al-Mustansiriyah University, Baghdad (Iraq)

2013-12-16T23:59:59.000Z

383

Optoelectronic simulation of GaAs solar cells with angularly selective filters  

SciTech Connect

We discuss the influence of angularly selective filters on thin film gallium arsenide solar cells. For this reason, the detailed balance model was refined to fit our needs with respect to Auger recombination, reflection, transmission, and realistic absorption. For calculating real systems, an approach was made to include optical effects of angularly selective filters into electron-hole dynamic equations implemented in PC1D, a one dimensional solar cell calculation tool. With this approach, we find a relative V{sub oc} increase of 5% for an idealized 100?nm GaAs cell, including Auger recombination.

Kraus, Tobias, E-mail: tobias.kraus@ise.fraunhofer.de; Höhn, Oliver; Hauser, Hubert; Bläsi, Benedikt [Fraunhofer Institute for Solar Energy Systems ISE, Heidenhofstr. 2, 79110 Freiburg (Germany)

2014-02-07T23:59:59.000Z

384

Investigation of Solar Energy Transfer through Plasmonic Au Nanoparticle-doped Sol-derived TiO? Thin Films in Photocatalysis and Photovoltaics /  

E-Print Network (OSTI)

solar-to-fuel and photovoltaic energy conversion through TiOplasmonic photovoltaic and photocatalytic energy transferto-fuel energy conversion or photovoltaic applications. The

Zelinski, Andrew

2013-01-01T23:59:59.000Z

385

BDS thin film damage competition  

SciTech Connect

A laser damage competition was held at the 2008 Boulder Damage Symposium in order to determine the current status of thin film laser resistance within the private, academic, and government sectors. This damage competition allows a direct comparison of the current state-of-the-art of high laser resistance coatings since they are all tested using the same damage test setup and the same protocol. A normal incidence high reflector multilayer coating was selected at a wavelength of 1064 nm. The substrates were provided by the submitters. A double blind test assured sample and submitter anonymity so only a summary of the results are presented here. In addition to the laser resistance results, details of deposition processes, coating materials, and layer count will also be shared.

Stolz, C J; Thomas, M D; Griffin, A J

2008-10-24T23:59:59.000Z

386

Efficient, air-stable colloidal quantum dot solar cells encapsulated using atomic layer deposition of a nanolaminate barrier  

SciTech Connect

Atomic layer deposition was used to encapsulate colloidal quantum dot solar cells. A nanolaminate layer consisting of alternating alumina and zirconia films provided a robust gas permeation barrier which prevented device performance degradation over a period of multiple weeks. Unencapsulated cells stored in ambient and nitrogen environments demonstrated significant performance losses over the same period. The encapsulated cell also exhibited stable performance under constant simulated solar illumination without filtration of harsh ultraviolet photons. This monolithically integrated thin film encapsulation method is promising for roll-to-roll processed high efficiency nanocrystal solar cells.

Ip, Alexander H.; Labelle, André J.; Sargent, Edward H., E-mail: ted.sargent@utoronto.ca [Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, Ontario M5S 3G4 (Canada)

2013-12-23T23:59:59.000Z

387

Nanostructured columnar heterostructures of TiO2 and Cu2O enabled by a thin-film self-assembly approach: Potential for photovoltaics  

SciTech Connect

Significant efforts are being devoted to the development of semiconductor thin film and nanostructured material architectures as components of solar energy harvesting and conversion devices. In particular, nanostructured assemblies with well-defined geometrical shapes have emerged as possible highly efficient and economically viable alternatives to planar junction thin film architectures , , , . However, fabrication of inorganic nanostructures generally requires complicated and multiple step processing techniques, making them less suitable for large-scale manufacturing. Hence, innovative cell architectures and materials processing schemes are essential to large-scale integration and practical viability in photovoltaic devices. Here we present here a new approach towards nanostructured thin film solar cells, by exploiting phase-separated self-assembly , . Through a single-step deposition by rf magnetron sputtering, we demonstrate growth of an epitaxial, composite film matrix formed as self-assembled, well ordered, phase segregated, and oriented p-n type interfacial nanopillars of Cu2O and TiO2. The composite films were structurally characterized to atomic resolution by a variety of analytical tools, and evaluated for preliminary optical properties using absorption measurements. We find nearly atomically distinct Cu2O-TiO2 interfaces (i.e. a p-n junction), and an absorption profile that captures a wide range of the solar spectrum extending from ultraviolet to visible wavelengths. This work opens a novel avenue for development of simple and cost-effective optically active thin film architectures, and offers promise for significantly increased photovoltaic device efficiencies using nanostructured cells that can be optimized for both incident light absorption and carrier collection.

Polat, Ozgur [ORNL; Aytug, Tolga [ORNL; Lupini, Andrew R [ORNL; Paranthaman, Mariappan Parans [ORNL; Ertugrul, Memhet [Ataturk University; Bogorin, Daniela Florentina [ORNL; Meyer III, Harry M [ORNL; Wang, Wei [ORNL; Pennycook, Stephen J [ORNL; Christen, David K [ORNL

2013-01-01T23:59:59.000Z

388

Semitransparent organic solar cells  

Science Journals Connector (OSTI)

The organic solar cell technology has attracted great interests due to ... low cost solution process capability. Bulk heterojunction organic solar cells offer a potentially much cheaper alternative way to harness...

Furong Zhu

2014-03-01T23:59:59.000Z

389

Thorough Characterization of Sputtered CuO Thin Films Used as Conversion Material Electrodes for Lithium Batteries  

Science Journals Connector (OSTI)

CuO is often considered as a p-type semiconductor and, due to its properties, is useful for many applications such as transistors,(1) light emitting diodes(2) or for solar cells and electrochromic devices. ... The influence of various parameters such as oxygen flow rate, substrate temperature, substrate-target distance, total pressure and target orientation (horizontal or tilted) was investigated with the aim to tailor the film properties giving the best electrochemical performances. ... Depth-profiling XPS analyses showed that the reduction processes spread from the thin film surface to the current collector, but that the oxidation starts at the surface of the current collector. ...

Brigitte Pecquenard; Frédéric Le Cras; Delphine Poinot; Olivier Sicardy; Jean-Pierre Manaud

2014-02-12T23:59:59.000Z

390

Light management using nano- and micro-structures in organic solar cells  

Science Journals Connector (OSTI)

The major drawback of thin-film photovoltaic cells is their relatively low light absorption. We discuss multi-scale optical engineering schemes combining the advantages of both...

Lee, Jung-Yong

391

Innovative Thin Films LLC | Open Energy Information  

Open Energy Info (EERE)

Thin Films LLC Thin Films LLC Jump to: navigation, search Name Innovative Thin Films LLC Place Toledo, Ohio Zip 43607 Product Provider of altnernative energy thin film deposition technology. Coordinates 46.440613°, -122.847838° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":46.440613,"lon":-122.847838,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

392

Spatial Frequency Filtering Using Nondelineated Thin Films  

Science Journals Connector (OSTI)

We present a new approach for achieving spatial frequency filtering in the analog domain. Our device, the Thin Film Spatial Filter, is a hybrid structure which combines the strengths of analog VLSI technology with the simplicity of a continuous sheet ...

J. Mcelvain; J. Langan; A. J. Heeger

1997-10-01T23:59:59.000Z

393

Visible spectrometer utilizing organic thin film absorption  

E-Print Network (OSTI)

In this thesis, I modeled and developed a spectrometer for the visible wavelength spectrum, based on absorption characteristics of organic thin films. The device uses fundamental principles of linear algebra to reconstruct ...

Tiefenbruck, Laura C. (Laura Christine)

2004-01-01T23:59:59.000Z

394

Organic Solar Cells as Polymer Waveguide Integrated Photodetectors  

Science Journals Connector (OSTI)

Abstract We report on the integration of an organic photodetector into a polymer waveguide. The photodetector is based on thin film organic solar cells using Zinc phtalocyanine and Fulleren C60 (ZnPc:C60) as photoactive material. This approach comprises the potential for an ease of production of active electro optical components on passive optical elements. By using organic materials low cost production of integrated devices on uneven surfaces becomes possible. In first experiments we show the potential of ZnPc:C60 solar cells as photodetectors at a wavelength of 635 nm. We perform simulations of this detectors put on the top surface of a polymer multi-mode waveguide. The simulation shows how light, which is guided through the waveguide can be efficiently absorbed by the photodetector without complex coupling structures.

Torsten Otto; Torsten Rabe; Sebastian Döring; Wolfgang Kowalsky

2014-01-01T23:59:59.000Z

395

In situ synchrotron x-ray studies of dense thin-film strontium-doped lanthanum manganite solid oxide fuel cell cathodes.  

SciTech Connect

Using a model cathode-electrolyte system composed of epitaxial thin-films of La{sub 1-x}Sr{sub x}MnO{sub 3-{delta}} (LSM) on single crystal yttria-stabilized zirconia (YSZ), we investigated changes in the cation concentration profile in the LSM during heating and under applied potential using grazing incidence x-rays. Pulsed laser deposition (PLD) was used to grow epitaxial LSM(011) on YSZ(111). At room temperature, we find that Sr segregates to form Sr enriched nanoparticles and upon heating the sample to 700 C, Sr is slowly reincorporated into the film. We also find different amounts of Sr segregation as the X-ray beam is moved across the sample. The variation in the amount of Sr segregation is greater on the sample that has been subject to 72 hours of applied potential, suggesting that the electrochemistry plays a role in the Sr segregation.

Chang, K. C.; Ingram, B.; Kavaipatti, B.; Yildiz, B.; Hennessy, D.; Salvador, P.; Leyarovski, N.; You, H.; Carnegie Mellon Univ.; Massachusetts Inst. of Tech.

2009-01-01T23:59:59.000Z

396

Open-circuit voltage, fill factor, and efficiency of a CdS/CdTe solar cell  

SciTech Connect

The dependences of the open-circuit voltage, fill factor, and efficiency of the thin-film CdS/CdTe solar cell on the resistivity {rho} and carrier lifetime {tau} in the absorbing CdTe layer were studied. In the common case in which the uncompensated acceptor concentration and the electron lifetime in the CdTe layer are within 10{sup 15}-10{sup 16} cm{sup -3} and 10{sup -10}-10{sup -9} s, the calculation results correspond to the achieved efficiency of the best thin-film CdS/CdTe solar cells. It was shown that, by decreasing {rho} and increasing {tau} in the absorbing CdTe layer, the open-circuit voltage, fill factor, and efficiency can be substantially increased, with their values approaching the theoretical limit for such devices.

Kosyachenko, L. A., E-mail: lakos@chv.ukrpack.net; Grushko, E. V. [Yuriy Fedkovych Chernivtsi National University (Ukraine)

2010-10-15T23:59:59.000Z

397

A review on plasma-assisted VLS synthesis of silicon nanowires and radial junction solar cells  

Science Journals Connector (OSTI)

Incorporation of nanostructures is a recent trend in the photovoltaic community, aimed at improving light absorption and consequently cell efficiency. In this regard, semiconductor nanowires provide an attractive research platform for a new generation of cost-effective and efficient solar cells. Thanks to their unique geometry, silicon nanowires enhance light trapping and anti-reflection effects by means of multiple scattering between individual nanowires, and by coupling the light into confined eigenmodes over a broad range of the solar spectrum. Moreover, radial junction solar cells built around nanowires decouple the light absorption and carrier collection directions, which allows for a higher internal field and better carrier collection. Thus, arrays of radial junction solar cells bring advantages of high efficiency with reduced material amount. This is particularly attractive for devices based on hydrogenated amorphous and microcrystalline silicon thin films. In this paper, after reviewing different approaches to fabricate silicon nanowires, we focus on nanowires grown using the plasma-assisted vapour–liquid–solid method because of the simplicity and compatibility with current silicon thin-film technology. Their application to a-Si?:?H based radial junction solar cells has already resulted in ~8% of stable devices with an absorber layer thickness of only 100 nm. Moreover, current challenges and perspectives such as the use of a microcrystalline silicon absorber are also reviewed.

Soumyadeep Misra; Linwei Yu; Wanghua Chen; Martin Foldyna; Pere Roca i Cabarrocas

2014-01-01T23:59:59.000Z

398

Unusual defect physics in CH{sub 3}NH{sub 3}PbI{sub 3} perovskite solar cell absorber  

SciTech Connect

Thin-film solar cells based on Methylammonium triiodideplumbate (CH{sub 3}NH{sub 3}PbI{sub 3}) halide perovskites have recently shown remarkable performance. First-principle calculations show that CH{sub 3}NH{sub 3}PbI{sub 3} has unusual defect physics: (i) Different from common p-type thin-film solar cell absorbers, it exhibits flexible conductivity from good p-type, intrinsic to good n-type depending on the growth conditions; (ii) Dominant intrinsic defects create only shallow levels, which partially explain the long electron-hole diffusion length and high open-circuit voltage in solar cell. The unusual defect properties can be attributed to the strong Pb lone-pair s orbital and I p orbital antibonding coupling and the high ionicity of CH{sub 3}NH{sub 3}PbI{sub 3}.

Yin, Wan-Jian, E-mail: wanjian.yin@utoledo.edu; Shi, Tingting; Yan, Yanfa, E-mail: yanfa.yan@utoledo.edu [Department of Physics and Astronomy and Center for Photovoltaics Innovation and Commercialization, The University of Toledo, Toledo, Ohio 43606 (United States)

2014-02-10T23:59:59.000Z

399

Cardiff University Distinguished Lecture Symposium Advances in Solar Energy  

E-Print Network (OSTI)

Cardiff University Distinguished Lecture Symposium Advances in Solar Energy Thursday 22nd March prospects for inorganic thin film photovoltaic solar cells for large scale energy generation 2:55 Dr Emyr:50 Professor James Durrant (Imperial College London, England) Photochemical approaches to solar energy

Martin, Ralph R.

400

Cascade Organic Solar Cells  

Science Journals Connector (OSTI)

Cascade Organic Solar Cells ... Multiple factors control the efficiency of organic solar cells, making it difficult to use single donor or acceptor materials to balance the, often opposing, material properties required to optimize device performance. ... We demonstrate planar organic solar cells consisting of a series of complementary donor materials with cascading exciton energies, incorporated in the following structure: glass/indium-tin-oxide/donor cascade/C60/bathocuproine/Al. ...

Cody W. Schlenker; Vincent S. Barlier; Stephanie W. Chin; Matthew T. Whited; R. Eric McAnally; Stephen R. Forrest; Mark E. Thompson

2011-09-02T23:59:59.000Z

Note: This page contains sample records for the topic "thin-film solar cell" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Heterojunction solar cell  

DOE Patents (OSTI)

A high-efficiency single heterojunction solar cell is described wherein a thin emitter layer (preferably Ga[sub 0.52]In[sub 0.48]P) forms a heterojunction with a GaAs absorber layer. The conversion efficiency of the solar cell is at least 25.7%. The solar cell preferably includes a passivating layer between the substrate and the absorber layer. An anti-reflection coating is preferably disposed over the emitter layer. 1 fig.

Olson, J.M.

1994-08-30T23:59:59.000Z

402

A chlorophyll solar cell  

Science Journals Connector (OSTI)

A simple chlorophyll solar cell has been designed built and tested. A voltage output versus time curve has also been obtained. (AIP)

J. Christopher Ludlow

1982-01-01T23:59:59.000Z

403

Quantum Junction Solar Cells  

Science Journals Connector (OSTI)

Quantum Junction Solar Cells ... § Department of Electrical and Computer Engineering, University of Toronto, 10 King’s College Road, Toronto, Ontario, M5S 3G4, Canada ...

Jiang Tang; Huan Liu; David Zhitomirsky; Sjoerd Hoogland; Xihua Wang; Melissa Furukawa; Larissa Levina; Edward H. Sargent

2012-08-10T23:59:59.000Z

404

Superhydrophobic Thin Film Symposium | ornl.gov  

NLE Websites -- All DOE Office Websites (Extended Search)

Superhydrophobic Thin Film Symposium Superhydrophobic Thin Film Symposium Sep 05 2012 12:00 AM - 05:00 PM Hosted by Oak Ridge Laboratory's Partnerships Directorate and focusing on the recent LDRD Launch project work completed by Dr. Tolga Aytug and Dr. John T. Simpson (ORNL research PI's). Oak Ridge, TN Oak Ridge National Laboratory CONTACT : Email: Cassie Lopez Phone:(865) 576-9294 Add to Calendar SHARE Hosted by Oak Ridge Laboratory's Partnerships Directorate and focusing on the recent LDRD Launch project work completed by Dr. Tolga Aytug and Dr. John T. Simpson (ORNL research PI's). Purpose To share the ORNL Superhydrophonbic Thin Film technology to prospective commercial partners. Date and Time The conference will be held on the morning of Wednesday September 5th at Oak Ridge National Laboratory (ORNL) by Partnerships and Technology

405

Thin Film Transistors On Plastic Substrates  

DOE Patents (OSTI)

A process for formation of thin film transistors (TFTs) on plastic substrates replaces standard thin film transistor fabrication techniques, and uses sufficiently lower processing temperatures so that inexpensive plastic substrates may be used in place of standard glass, quartz, and silicon wafer-based substrates. The silicon based thin film transistor produced by the process includes a low temperature substrate incapable of withstanding sustained processing temperatures greater than about 250.degree. C., an insulating layer on the substrate, a layer of silicon on the insulating layer having sections of doped silicon, undoped silicon, and poly-silicon, a gate dielectric layer on the layer of silicon, a layer of gate metal on the dielectric layer, a layer of oxide on sections of the layer of silicon and the layer of gate metal, and metal contacts on sections of the layer of silicon and layer of gate metal defining source, gate, and drain contacts, and interconnects.

Carey, Paul G. (Mountain View, CA); Smith, Patrick M. (San Ramon, CA); Sigmon, Thomas W. (Portola Valley, CA); Aceves, Randy C. (Livermore, CA)

2004-01-20T23:59:59.000Z

406

Vibration welding system with thin film sensor  

DOE Patents (OSTI)

A vibration welding system includes an anvil, a welding horn, a thin film sensor, and a process controller. The anvil and horn include working surfaces that contact a work piece during the welding process. The sensor measures a control value at the working surface. The measured control value is transmitted to the controller, which controls the system in part using the measured control value. The thin film sensor may include a plurality of thermopiles and thermocouples which collectively measure temperature and heat flux at the working surface. A method includes providing a welder device with a slot adjacent to a working surface of the welder device, inserting the thin film sensor into the slot, and using the sensor to measure a control value at the working surface. A process controller then controls the vibration welding system in part using the measured control value.

Cai, Wayne W; Abell, Jeffrey A; Li, Xiaochun; Choi, Hongseok; Zhao, Jingzhou

2014-03-18T23:59:59.000Z

407

Synthesis and characterization of specific electrode materials for solar cells and supercapacitors  

Science Journals Connector (OSTI)

In this paper a brief overview of research in the field of electrode materials for solar cells and supercapacitors is presented which the authors dealt with for years. In addition to the standard electrode material (graphite and silicon in supercapacitor with solar cells) different materials were examined particularly oxides and sulfides of copper. Copper (I) oxide or cuprous oxide is an oxide semiconductor which is used as the anodic material in the form of thin film in lithium batteries and solar cells. The cathodic process of synthesis of cuprous oxide thin film is carried out in a potentiostatic mode from the organic electrolyte. The electrochemical characterization was carried out by cyclic voltammetry. The electro deposition techniques are particularly well suited for the deposition of single elements but it is also possible to carry out simultaneous depositions of several elements and syntheses of well-defined alternating layers of metals and oxides with thicknesses down to a few nanometers. Electrochemical characteristics of covellite (CuS) are of importance from flotation and metallurgical point of view due to its potential application in solid state solar cells and in photocatalytic reactions. Also the compound CuS appears as an intermediary product or a final product in electrochemical oxidation reactions of chalcocite (Cu 2S) which exhibits supercapacitor characteristics. Natural copper mineral covellite has been investigated in inorganic sulfate acid electrolytes as well as in strong alkaline electrolyte. Different electrochemical methods (galvanostatic potentiostatic cyclic voltammetry and electrochemical impedance spectroscopy) have been used in these investigations.

2013-01-01T23:59:59.000Z

408

Thin-film Rechargeable Lithium Batteries  

DOE R&D Accomplishments (OSTI)

Thin film rechargeable lithium batteries using ceramic electrolyte and cathode materials have been fabricated by physical deposition techniques. The lithium phosphorous oxynitride electrolyte has exceptional electrochemical stability and a good lithium conductivity. The lithium insertion reaction of several different intercalation materials, amorphous V{sub 2}O{sub 5}, amorphous LiMn{sub 2}O{sub 4}, and crystalline LiMn{sub 2}O{sub 4} films, have been investigated using the completed cathode/electrolyte/lithium thin film battery.

Dudney, N. J.; Bates, J. B.; Lubben, D.

1995-06-00T23:59:59.000Z

409

SAW determination of surface area of thin films  

DOE Patents (OSTI)

N.sub.2 adsorption isotherms are measured from thin films on SAW devices. The isotherms may be used to determine the surface area and pore size distribution of thin films.

Frye, Gregory C. (Albuquerque, NM); Martin, Stephen J. (Albuquerque, NM); Ricco, Antonio J. (Albuquerque, NM)

1990-01-01T23:59:59.000Z

410

Conductivity of Oriented Samaria-Doped Ceria Thin Films Grown...  

NLE Websites -- All DOE Office Websites (Extended Search)

Conductivity of Oriented Samaria-Doped Ceria Thin Films Grown by Oxygen-plasma-assisted Molecular Beam Epitaxy. Conductivity of Oriented Samaria-Doped Ceria Thin Films Grown by...

411

SINGLE AND DUAL LAYER THIN FILM BULGE TESTING  

E-Print Network (OSTI)

film windows that are used in Next Generation Lithography masks and certain MEMS devices. The bulge testing method measures the mechanical properties of a thin film by isolating it in a thin film window of the system. Figure 6 Dual Layer Thin Film Membrane Window For a dual layer membrane the effective total

Huston, Dryver R.

412

THIN FILM MECHANICS BULGING AND Ph.D Dissertation  

E-Print Network (OSTI)

for the intensive effort in research in materials and processing techniques. Thin film windows are window underneath. The thin film window has such a small thickness to span ratio that it can usually be considered and precision-stretching of thin film windows are examined. Bulge Testing is a method used to evaluate

Huston, Dryver R.

413

NANO-INDENTATION OF COPPER THIN FILMS ON SILICON SUBSTRATES  

E-Print Network (OSTI)

NANO-INDENTATION OF COPPER THIN FILMS ON SILICON SUBSTRATES S. Suresh1 , T.-G. Nieh2 and B.W. Choi2: Mechanical properties; Nano-indentation; Thin films; Copper; Dislocations Introduction Indentation methods films on substrates (e.g., [2,3]) using instrumented indentation. Nano-indentation studies of thin films

Suresh, Subra

414

Radiative cooling of solar cells  

Science Journals Connector (OSTI)

Standard solar cells heat up under sunlight. The resulting increased temperature of the solar cell has adverse consequences on both its efficiency and its reliability. We introduce a...

Zhu, Linxiao; Raman, Aaswath; Wang, Ken Xingze; Anoma, Marc Abou; Fan, Shanhui

2014-01-01T23:59:59.000Z

415

A high performance thin film thermoelectric cooler  

SciTech Connect

Thin film thermoelectric devices with small dimensions have been fabricated using microelectronics technology and operated successfully in the Seebeck mode as sensors or generators. However, they do not operate successfully in the Peltier mode as coolers, because of the thermal bypass provided by the relatively thick substrate upon which the thermoelectric device is fabricated. In this paper a processing sequence is described which dramatically reduces this thermal bypass and facilitates the fabrication of high performance integrated thin film thermoelectric coolers. In the processing sequence a very thin amorphous SiC (or SiO{sub 2}SiN{sub 4}) film is deposited on a silicon substrate using conventional thin film deposition and a membrane formed by removing the silicon substrate over a desired region using chemical etching or micro-machining. Thermoelements are deposited on the membrane using conventional thin film deposition and patterning techniques and configured so that the region which is to be cooled is abutted to the cold junctions of the Peltier thermoelements while the hot junctions are located at the outer peripheral area which rests on the silicon substrate rim. Heat is pumped laterally from the cooled region to the silicon substrate rim and then dissipated vertically through it to an external heat sink. Theoretical calculations of the performance of a cooler described above indicate that a maximum temperature difference of about 40--50K can be achieved with a maximum heat pumping capacity of around 10 milliwatts.

Rowe, D.M.; Min, G.; Volklein, F.

1998-07-01T23:59:59.000Z

416

Enhanced Thin Film Organic Photovoltaic Devices  

A novel structure design for thin film organic photovoltaic (OPV) devices provides a system for increasing the optical absorption in the active layer. The waveguided structure permits reduction of the active layer thickness, resulting in enhanced charge collection and extraction, leading to improved power conversion efficiency compared to standard OPV devices....

2014-01-10T23:59:59.000Z

417

Thin films for solar control applications  

Science Journals Connector (OSTI)

...is resulting in the extensive use of electricity in order to maintain such systems...1. Introduction The worlds energy consumption is continuously increasing and this...cent of the worlds total annual energy consumption owing to the excessive use of lighting...

2010-01-01T23:59:59.000Z

418

Junctionless thin-film ferroelectric oxides for photovoltaic energy Farnood K. Rezaie*a  

E-Print Network (OSTI)

, and the conditions for ideal poling. Photovoltaic characterization of KBNNO cells will determine the efficiency, and cell fill factor (FF). Keywords: Bulk photovoltaics, Perovskite oxide, Ferroelectric thin-film, KBNNO. This creates opportunities for innovation in photovoltaic cells and state of the art optoelectronic devices

Peale, Robert E.

419

Negative refractive index materials for improved solar cells  

Science Journals Connector (OSTI)

Planar thin-film solar cells can exploit Fabry-Perot resonances in the spectral domain of weak absorption to make them more efficient. However, their spectral width decreases and their number increases for a thicker solar cell, both being detrimental. Here, we show that an optically complementary material, i.e., a material with a negative but otherwise identical refractive index to that of the solar cell material and with the same impedance, allows a single, spectrally immensely broad, Fabry-Perot resonance to be obtained. This is useful to enhance the absorption across the entire spectral domain of interest. If a material with the required optical response were available, a solar cell could be implemented that performs close to the Lambertian limit. However, since the idealistic material properties assumed herein cannot be achieved, an actual implementation may exploit nanostructures such as, e.g., dispersion engineered photonic crystals. In a reasonable spectral range their optical response can be close to that required.

Stephan Fahr; Carsten Rockstuhl; Falk Lederer

2013-09-03T23:59:59.000Z

420

High-Throughput Thin Film Approach for Screening of Temperature-Pressure-Composition Phase Space  

SciTech Connect

Many solar energy technologies, for example CIGS and CdTe photovoltaics, utilize materials in thin film form. The equilibrium phase diagrams for these and other more novel solar energy materials are not known or are irrelevant because of the non-equilibrium character of the thin film growth processes. We demonstrate a high-throughput thin film approach for screening of temperature-pressure-composition phase diagrams and phase spaces. The examples in focus are novel solar absorbers Cu-N, Cu-O and p-type transparent conductors in the Cr2O3-MnO system. The composition axis of the Cr2O3-MnO phase diagram was screened using a composition spread method. The temperature axis of the Mn-O phase diagram was screened using a temperature spread method. The pressure axes of the Cu-N and Cu-O phase diagrams were screened using rate spread method with the aid of non-equilibrium growth phenomena. Overall these three methods constitute an approach to high-throughput screening of inorganic thin film phase diagrams. This research is supported by U.S. Department of Energy as a part of two NextGen Sunshot projects and an Energy Frontier Research Center.

Zakutayev, A.; Subramaniyan, A.; Caskey, C. M.; Ndione, P. F.; Richards, R. M.; O'Hayre, R.; Ginley, D. S.

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "thin-film solar cell" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

NREL: News - NREL and Stanford Team up on Peel-and-Stick Solar Cells  

NLE Websites -- All DOE Office Websites (Extended Search)

313 313 NREL and Stanford Team up on Peel-and-Stick Solar Cells Devices could charge battery-powered products in the future January 10, 2013 It may be possible soon to charge cell phones, change the tint on windows, or power small toys with peel-and-stick versions of solar cells, thanks to a partnership between Stanford University and the U.S. Department of Energy's National Renewable Energy Laboratory (NREL). A scientific paper, "Peel and Stick: Fabricating Thin Film Solar Cells on Universal Substrates," appears in the online version of Scientific Reports, a subsidiary of the British scientific journal Nature. Peel-and-stick, or water-assisted transfer printing (WTP), technologies were developed by the Stanford group and have been used before for nanowire

422

Conducting polymers based counter electrodes for dye-sensitized solar cells  

SciTech Connect

Conducting polymer films were synthesized and employed as an alternative to expensive platinum counter electrodes for dye-sensitized solar cells. poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate) (PEDOT:PSS) thin films were spin-coated and polypyrrole films were electrochemically deposited via cyclic voltammetry method on ITO substrates. The morphology of the films were imaged by SEM and AFM. These films show good catalytic activity towards triiodide reduction as compared to Pt/FTO electrodes. Finally the photovoltaic performance of DSSC fabricated using N3 dye were compared with PT/FTO, PEDOT/ITO, and e-PPy counter electrodes.

Veerender, P., E-mail: veeru1009@gmail.com, E-mail: veeru1009@gmail.com; Saxena, Vibha, E-mail: veeru1009@gmail.com, E-mail: veeru1009@gmail.com; Gusain, Abhay, E-mail: veeru1009@gmail.com, E-mail: veeru1009@gmail.com; Jha, P., E-mail: veeru1009@gmail.com, E-mail: veeru1009@gmail.com; Koiry, S. P., E-mail: veeru1009@gmail.com, E-mail: veeru1009@gmail.com; Chauhan, A. K., E-mail: veeru1009@gmail.com, E-mail: veeru1009@gmail.com; Aswal, D. K., E-mail: veeru1009@gmail.com, E-mail: veeru1009@gmail.com; Gupta, S. K., E-mail: veeru1009@gmail.com, E-mail: veeru1009@gmail.com [Technical Physics Division, Bhabha Atomic Research Centre, Mumbai - 400085 (India)

2014-04-24T23:59:59.000Z

423

Technical evaluation of Solar Cells, Inc., CdTe modules and array at NREL  

SciTech Connect

The Engineering and Technology Validation Team at the National Renewable Energy Laboratory (NREL) conducts in-situ technical evaluations of polycrystalline thin-film photovoltaic (PV) modules and arrays. This paper focuses on the technical evaluation of Solar Cells, Inc., (SCI) cadmium telluride (CdTe) module and array performance by attempting to correlate individual module and array performance. This is done by examining the performance and stability of the modules and array over a period of more than one year. Temperature coefficients for module and array parameters (P{sub max}V{sub oc}, V{sub max}, I{sub sc}, I{sub max}) are also calculated.

Kroposki, B.; Strand, T.; Hansen, R. [and others] [and others

1996-05-01T23:59:59.000Z

424

Thermal Management of Solar Cells  

E-Print Network (OSTI)

D. Mills, "Cooling of photovoltaic cells under concentratedelectric performance of a photovoltaic cells by cooling andSolar Cell A photovoltaic cell is a semiconductor that

Saadah, Mohammed Ahmed

2013-01-01T23:59:59.000Z

425

Solar cell array interconnects  

DOE Patents (OSTI)

Electrical interconnects are disclosed for solar cells or other electronic components using a silver-silicone paste or a lead-tin (Pb-Sn) no-clean fluxless solder cream, whereby the high breakage of thin (<6 mil thick) solar cells using conventional solder interconnect is eliminated. The interconnects of this invention employs copper strips which are secured to the solar cells by a silver-silicone conductive paste which can be used at room temperature, or by a Pb-Sn solder cream which eliminates undesired residue on the active surfaces of the solar cells. Electrical testing using the interconnects of this invention has shown that no degradation of the interconnects developed under high current testing, while providing a very low contact resistance value. 4 figs.

Carey, P.G.; Thompson, J.B.; Colella, N.J.; Williams, K.A.

1995-11-14T23:59:59.000Z

426

Organic solar cell optimizations  

Science Journals Connector (OSTI)

This paper presents recent experimental and theoretical approaches for optimizing organic solar cell efficiencies in both space and energy/time...D/A...) blend film, a corresponding –DBAB- block copolymer film ex...

S. Sun; Z. Fan; Y. Wang; J. Haliburton

2005-03-01T23:59:59.000Z

427

Photovoltaic solar cell  

DOE Patents (OSTI)

A photovoltaic solar cell for generating electricity from sunlight is disclosed. The photovoltaic solar cell comprises a plurality of spaced-apart point contact junctions formed in a semiconductor body to receive the sunlight and generate the electicity therefrom, the plurality of spaced-apart point contact junctions having a first plurality of regions having a first doping type and a second plurality of regions having a second doping type. In addition, the photovoltaic solar cell comprises a first electrical contact electrically connected to each of the first plurality of regions and a second electrical contact electrically connected to each of the second plurality of regions, as well as a passivation layer covering major surfaces and sidewalls of the photovoltaic solar cell.

Nielson, Gregory N; Okandan, Murat; Cruz-Campa, Jose Luis; Resnick, Paul J

2013-11-26T23:59:59.000Z

428

Photovoltaic solar cell  

DOE Patents (OSTI)

A photovoltaic solar cell for generating electricity from sunlight is disclosed. The photovoltaic solar cell comprises a plurality of spaced-apart point contact junctions formed in a semiconductor body to receive the sunlight and generate the electricity therefrom, the plurality of spaced-apart point contact junctions having a first plurality of regions having a first doping type and a second plurality of regions having a second doping type. In addition, the photovoltaic solar cell comprises a first electrical contact electrically connected to each of the first plurality of regions and a second electrical contact electrically connected to each of the second plurality of regions, as well as a passivation layer covering major surfaces and sidewalls of the photovoltaic solar cell.

Nielson, Gregory N; Cruz-Campa, Jose Luis; Okandan, Murat; Resnick, Paul J

2014-05-20T23:59:59.000Z

429

NANOCOMPOSITE ENABLED SENSITIZED SOLAR CELL  

E-Print Network (OSTI)

solar cell The history of dye sensitization dates back to the photosensitization phenomenon by organic

Phuyal, Dibya

2012-01-01T23:59:59.000Z

430

Tuning of opto-electronic properties of Cu{sub 2}SnS{sub 3} thin films through variation of stoichiometry  

SciTech Connect

Copper Tin Sulfide (Cu{sub 2}SnS{sub 3}), one of the promising absorber layer for thin film solar cell, was successfully deposited on glass substrate maintained at a substrate temperature of 325° C by chemical spray pyrolysis technique (CSP). Variation in copper concentration in the precursor solution affects the structural, optical and electrical properties of the films. XRD results proved the tetragonal structure (with preferential orientation along (112) orientation) of the samples. All samples were p-type and their band gap and resistivity decreased with increase in Copper concentration. A minimum resistivity of 1.6×10{sup ?3} ?.cm was obtained for an optimum copper concentration.

Sunny, Gincy, E-mail: kpv@cusat.ac.in; Kartha, C. Sudha, E-mail: kpv@cusat.ac.in; Vijayakumar, K. P., E-mail: kpv@cusat.ac.in [Thin Film Photovoltaic Division, Department of Physics, Cochin University of Science and Technology, Cochin-682022 (India)

2014-04-24T23:59:59.000Z

431

Fuel Cells Catalyst for Start-up and Shutdown Conditions: Electrochemical, XPS, and TEM Evaluation of Sputter-Deposited Ru, Ir, and Ti on Pt-Nano-Structured Thin Film (NSTF) Support  

SciTech Connect

Minute amounts of Ru, Ir and Ti (2 and 10 g/cm2) sputter-deposited over 3M Pt-coated nano-structured thin film (NSTF) substrate were evaluated as oxygen evolution reaction (OER) catalysts in a polymer electrolyte membrane (PEM) environment. The purpose of the study was to explore the suitability of these elements for modifying both the anode and the cathode catalysts in order to lower the overpotential for the oxidation of water during transient conditions. By keeping the electrode potential as close as possible to the thermodynamic potential for OER, other components in the fuel cell, such as platinum, the gas diffusion layer and the bipolar plates, will be less prone to degradation. While Ru and Ir were chosen due to their high OER activity in aqueous environment, Ti was also included due to its ability to stabilize the OER catalysts. The 3M Pt-NSTF was selected as a stable, carbon-free substrate. The surface chemistry and the morphology of OER catalysts on Pt-NSTF were examined by x-ray photoelectron spectroscopy (XPS) and scanning transmission electron microscopy (STEM). The OER catalytic activity of Ru and Ir in PEMs compares well with their behavior in aqueous environment. It was found that Ru is more active than Ir, that Ir is considerably more stable, while the mass activity of both is higher in comparison with similar OER catalyst.

Atanasoski, Radoslav [3M Industrial Mineral Products; Atanasoska, Liliana [3M Industrial Mineral Products; Cullen, David A [ORNL; Vernstrom, George [3M Industrial Mineral Products; More, Karren Leslie [ORNL; Haugen, Gregory [3M Industrial Mineral Products

2012-01-01T23:59:59.000Z

432

Thin silicon solar cells  

SciTech Connect

The silicon-film design achieves high performance by using a dun silicon layer and incorporating light trapping. Optimally designed thin crystalline solar cells (<50 microns thick) have performance advantages over conventional thick devices. The high-performance silicon-film design employs a metallurgical barrier between the low-cost substrate and the thin silicon layer. Light trapping properties of silicon-film on ceramic solar cells are presented and analyzed. Recent advances in process development are described here.

Hall, R.B.; Bacon, C.; DiReda, V.; Ford, D.H.; Ingram, A.E.; Cotter, J.; Hughes-Lampros, T.; Rand, J.A.; Ruffins, T.R.; Barnett, A.M. [Astro Power Inc., Solar Park, Newark, DE (United States)

1992-12-01T23:59:59.000Z

433

Solar Cells: Spin-Cast Bulk Heterojunction Solar Cells: A Dynamical...  

NLE Websites -- All DOE Office Websites (Extended Search)

Solar Cells: Spin-Cast Bulk Heterojunction Solar Cells: A Dynamical Investigation Solar Cells: Spin-Cast Bulk Heterojunction Solar Cells: A Dynamical Investigation Print Wednesday,...

434

Shengrui Solar | Open Energy Information  

Open Energy Info (EERE)

Shengrui Solar Jump to: navigation, search Name: Shengrui Solar Place: Hong Kong Product: Hong Kong headquartered company with thin-film PV production in China. References:...

435

Effect of deposition temperature on electron-beam evaporated polycrystalline silicon thin-film and crystallized by diode laser  

SciTech Connect

The effects of the deposition temperature on the microstructure, crystallographic orientation, and electrical properties of a 10-?m thick evaporated Si thin-film deposited on glass and crystallized using a diode laser, are investigated. The crystallization of the Si thin-film is initiated at a deposition temperature between 450 and 550?°C, and the predominant (110) orientation in the normal direction is found. Pole figure maps confirm that all films have a fiber texture and that it becomes stronger with increasing deposition temperature. Diode laser crystallization is performed, resulting in the formation of lateral grains along the laser scan direction. The laser power required to form lateral grains is higher in case of films deposited below 450?°C for all scan speeds. Pole figure maps show 75% occupancies of the (110) orientation in the normal direction when the laser crystallized film is deposited above 550?°C. A higher density of grain boundaries is obtained when the laser crystallized film is deposited below 450?°C, which limits the solar cell performance by n?=?2 recombination, and a performance degradation is expected due to severe shunting.

Yun, J., E-mail: j.yun@unsw.edu.au; Varalmov, S.; Huang, J.; Green, M. A. [School of Photovoltaic and Renewable Energy Engineering, University of New South Wales, Sydney, New South Wales 2052 (Australia); Kim, K. [School of Photovoltaic and Renewable Energy Engineering, University of New South Wales, Sydney, New South Wales 2052 (Australia); Suntech R and D Australia, Botany, New South Wales 2019 (Australia)

2014-06-16T23:59:59.000Z

436

Sputtered Molybdenum Bilayer Back Contact for Copper Indium Diselenide-Based Polycrystalline Thin-Film Solar Cells  

E-Print Network (OSTI)

grown CdS layer followed by an ion- beam-sputtered, lightly doped (50 nm) then heavily doped (300 nm), n with the CIS at 600°C.13 glass Mo CIGS Al-Ni grid n+ ZnO i ZnO CdS sunlight MgF 2 FIG. 1. Cross-sectional view

Scofield, John H.

437

Optically optimal wavelength-scale patterned ITO/ZnO composite coatings for thin film solar cells  

E-Print Network (OSTI)

A new methodology is proposed for finding structures that are, optically speaking, locally optimal : a physical analysis of much simpler structures is used to constrain the optimization process. The obtained designs are based on a flat amorphous silicon layer (to minimize recombination) with a patterned anti-reflective coating made of ITO or ZnO, or a composite ITO/ZnO coating. These latter structures are realistic and present good performances despite very thin active layers.

Moreau, Antoine; Centeno, Emmanuel; Seassal, Christian

2012-01-01T23:59:59.000Z

438

Improved red-response in thin film a-Si:H solar cells with soft-imprinted plasmonic back reflectors  

E-Print Network (OSTI)

and Albert Polman4 1 Thomas J. Watson Laboratories of Applied Physics, California Institute of Technology, The Netherlands 3 Utrecht University, Debye Institute for Nanomaterials Science, Section Nanophotonics, P.O. Box 80,000, 3508 TA Utrecht, The Netherlands 4 Center for Nanophotonics, FOM--Institute AMOLF, Science

Polman, Albert

439

Broad spectrum solar cell  

DOE Patents (OSTI)

An alloy having a large band gap range is used in a multijunction solar cell to enhance utilization of the solar energy spectrum. In one embodiment, the alloy is In.sub.1-xGa.sub.xN having an energy bandgap range of approximately 0.7 eV to 3.4 eV, providing a good match to the solar energy spectrum. Multiple junctions having different bandgaps are stacked to form a solar cell. Each junction may have different bandgaps (realized by varying the alloy composition), and therefore be responsive to different parts of the spectrum. The junctions are stacked in such a manner that some bands of light pass through upper junctions to lower junctions that are responsive to such bands.

Walukiewicz, Wladyslaw (Kensington, CA); Yu, Kin Man (Lafayette, CA); Wu, Junqiao (Richmond, CA); Schaff, William J. (Ithaca, NY)

2007-05-15T23:59:59.000Z

440

Characterization of Field Exposed Thin Film Modules: Preprint  

SciTech Connect

Test arrays of thin film modules have been deployed at the Solar Energy Centre near New Delhi, India since 2002-2003. Performances of these arrays were reported by O.S. Sastry [1]. This paper reports on NREL efforts to support SEC by performing detailed characterization of selected modules from the array. Modules were selected to demonstrate both average and worst case power loss over the 8 years of outdoor exposure. The modules characterized included CdTe, CIS and three different types of a-Si. All but one of the a-Si types were glass-glass construction. None of the modules had edge seals. Detailed results of these tests are presented along with our conclusions about the causes of the power loss for each technology.

Wohlgemuth, J. H.; Sastry, O. S.; Stokes, A.; Singh, Y. K.; Kumar, M.

2012-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "thin-film solar cell" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Issue and challenges facing rechargeable thin film lithium batteries  

Science Journals Connector (OSTI)

New materials hold the key to fundamental advances in energy conversion and storage, both of which are vital in order to meet the challenge of global warming and the finite nature of fossil fuels. Nanomaterials in particular offer unique properties or combinations of properties as electrodes and electrolytes in a range of energy devices. Technological improvements in rechargeable solid-state batteries are being driven by an ever-increasing demand for portable electronic devices. Lithium batteries are the systems of choice, offering high energy density, flexible, lightweight design and longer lifespan than comparable battery technologies. We present a brief historical review of the development of lithium-based thin film rechargeable batteries highlight ongoing research strategies and discuss the challenges that remain regarding the discovery of nanomaterials as electrolytes and electrodes for lithium batteries also this article describes the possible evolution of lithium technology and evaluates the expected improvements, arising from new materials to cell technology. New active materials under investigation and electrode process improvements may allow an ultimate final energy density of more than 500 Wh/L and 200 Wh/kg, in the next 5–6 years, while maintaining sufficient power densities. A new rechargeable battery technology cannot be foreseen today that surpasses this. This report will provide key performance results for thin film batteries and highlight recent advances in their development.

Arun Patil; Vaishali Patil; Dong Wook Shin; Ji-Won Choi; Dong-Soo Paik; Seok-Jin Yoon

2008-01-01T23:59:59.000Z

442

Method and apparatus for increasing the durability and yield of thin film photovoltaic devices  

DOE Patents (OSTI)

Thin film photovoltaic cells having a pair of semiconductor layers between an opaque and a transparent electrical contact are manufactured in a method which includes the step of scanning one of the semiconductor layers to determine the location of any possible shorting defect. Upon the detection of such defect, the defect is eliminated to increase the durability and yield of the photovoltaic device.

Phillips, James E. (Newark, DE); Lasswell, Patrick G. (Newark, DE)

1987-01-01T23:59:59.000Z

443

Fabrication Of Multilayered Thin Films Via Spin-Assembly  

NLE Websites -- All DOE Office Websites (Extended Search)

Fabrication Of Multilayered Thin Films Via Spin-Assembly Fabrication Of Multilayered Thin Films Via Spin-Assembly Fabrication Of Multilayered Thin Films Via Spin-Assembly A process of forming multilayer thin film heterostructures. Available for thumbnail of Feynman Center (505) 665-9090 Email Fabrication Of Multilayered Thin Films Via Spin-Assembly A process of forming multilayer thin film heterostructures is disclosed and includes applying a solution including a first water-soluble polymer from the group of polyanionic species, polycationic species and uncharged polymer species onto a substrate to form a first coating layer on the substrate, drying the first coating layer on the substrate, applying a solution including a second water-soluble polymer from the group of polyanionic species, polycationic species and uncharged polymer species

444

Very high efficiency photovoltaic cells based on fully organic multiple quantum wells. Quarterly technical progress report, 15 February 1995--15 May 1995  

SciTech Connect

The principal project objective is to demonstrate relatively high solar conversion efficiency using extremely low-cost, thin-film technology based on crystalline organic multiple quantum well (MQW) photovoltaic cells. The authors base their work on recent observations both in the laboratory and elsewhere that have indicated the quantum efficiency of organic photoconductors based on vacuum-deposited thin films can be increased by at least two orders of magnitude (to at least 10%) if the organic films are grown in a highly ordered manner, and if organic multiple quantum wells are used in the absorption region. The authors are investigating the physical origin of this phenomenon, and they are growing thin-film MQW cells that demonstrate relatively high quantum efficiencies to determine the practicality of crystalline organic thin-film cells for solar power applications. The investigations are based on a unique, ultrahigh-vacuum organic molecular beam deposition system in the laboratory.

Forrest, S.R. [Princeton Univ., NJ (United States)] [Princeton Univ., NJ (United States)

1997-03-01T23:59:59.000Z

445

Monolithic tandem solar cell  

SciTech Connect

It is an object of the invention to provide a monolithic tandem photovoltaic solar cell which is highly radiation resistant and efficient; in which the energy bandgap of the lower subcell can be tailored for specific applications; solar cell comprising layers of InP and GaInAsP (or GaInAs), where said photovoltaic cell is useful, for example, in space power applications; having an improved power-to-mass ratio; in which subcells are lattice-matches; and are both two terminal and three terminal monolithic tandem photovoltaic solar cells. To achieve the foregoing and other objects and in accordance with the purpose of the present invention, as embodied and broadly described herein, the monolithic tandem photovoltaic solar cell may comprise; (a) an InP substrate having an upper surface; (b) a first photoactive subcell on the upper surface of the InP substrate; wherein the first subcell comprises GaInAs (which could include GaInAsP) and includes a homojunction; and (c) a second photoactive subcell on the first subcell; wherein the second subcell comprises InP and includes a homojunction. The cell is described in detail. 5 figs., 2 tabs.

Wanlass, M.W.

1989-11-03T23:59:59.000Z

446

Monolithic tandem solar cell  

SciTech Connect

This patent describes a single-crystal, monolithic, tandem, photovoltaic solar cell which includes an InP substrate having an upper and lower surfaces, a first photoactive subcell on the upper surface of the InP substrate, and a second photoactive subcell on the first subcell. The first photovoltaic subcell is GaInAsP of defined composition. The second subcell is InP. The two subcells are lattice matched. The solar cell can be provided as a two- terminal device or a three-terminal device.

Wanlass, M.W.

1991-05-28T23:59:59.000Z

447

Apparatus and Method for Fabricating Thin Film Devices using...  

NLE Websites -- All DOE Office Websites (Extended Search)

method for manufacturing thin-films was developed specifically for fabrication of CdSCdTe photovoltaic modules. However, this innovation should perform excellently for any...

448

Ninth workshop on crystalline silicon solar cell materials and processes: Summary discussion sessions  

SciTech Connect

This report is a summary of the panel discussions included with the Ninth Workshop on Crystalline Silicon Solar Cell Materials and Processes. The theme for the workshop was ``R and D Challenges and Opportunities in Si Photovoltaics.'' This theme was chosen because it appropriately reflects a host of challenges that the growing production of Si photovoltaics will be facing in the new millennium. The anticipated challenges will arise in developing strategies for cost reduction, increased production, higher throughput per manufacturing line, new sources of low-cost Si, and the introduction of new manufacturing processes for cell production. At the same time, technologies based on CdTe and CIS will come on line posing new competition. With these challenges come new opportunities for Si PV to wean itself from the microelectronics industry, to embark on a more aggressive program in thin-film Si solar cells, and to try new approaches to process monitoring.

Sopori, B.; Tan, T.; Swanson, D.; Rosenblum, M.; Sinton, R.

1999-11-23T23:59:59.000Z

449

16th Workshop on Crystalline Silicon Solar Cells and Modules: Materials and Processes; Program, Extended Abstracts, and Papers  

SciTech Connect

The National Center for Photovoltaics sponsored the 16th Workshop on Crystalline Silicon Solar Cells and Modules: Materials and Processes held August 6-9, 2006 in Denver, Colorado. The workshop addressed the fundamental properties of PV-Si, new solar cell designs, and advanced solar cell processing techniques. It provided a forum for an informal exchange of technical and scientific information between international researchers in the photovoltaic and relevant non-photovoltaic fields. The Workshop Theme was: "Getting more (Watts) for Less ($i)". A combination of oral presentations by invited speakers, poster sessions, and discussion sessions reviewed recent advances in crystal growth, new cell structures, new processes and process characterization techniques, and cell fabrication approaches suitable for future manufacturing demands. The special sessions included: Feedstock Issues: Si Refining and Purification; Metal-impurity Engineering; Thin Film Si; and Diagnostic Techniques.

Sopori, B. L.

2006-08-01T23:59:59.000Z

450

A thin-film/agglomerate model of a proton-exchange-membrane fuel cell cathode catalyst layer with consideration of solid-polymer-electrolyte distribution  

Science Journals Connector (OSTI)

Experimental work on the proton-exchange-membrane fuel cell (PEMFC) has revealed that a better utilization of carbon supported platinum catalyst (Pt/C) hinges on an appropriate...1–12...]. GDE is prepared by a po...

Ken-Ming Yin

2007-08-01T23:59:59.000Z

451

Meteorological Effects on Solar Cells  

Science Journals Connector (OSTI)

30 June 1977 research-article Meteorological Effects on Solar Cells J. R. Mallinson P. T. Landsberg The effect of different meteorological conditions on solar cell outputs has been investigated...

1977-01-01T23:59:59.000Z

452

Organic Solar Cells — A Survey  

Science Journals Connector (OSTI)

The objective of this study was to examine in some detail the question of efficient organic solar cells. The scientific-technical situation concerning organic solar cells is highly confusing and unsatisfactory. I...

Dieter Bonnet; Jürgen Volkheimer

1991-01-01T23:59:59.000Z

453

Solar Cell Simulation  

K-12 Energy Lesson Plans and Activities Web site (EERE)

Students model the flow of energy from the sun as it enters a photovoltaic cell, moves along a wire and powers a load. The game-like atmosphere involves the younger students and helps them understand the continuous nature of the flow of energy. For a related lesson, please see the activity “Solar Powered System” (PDF 430 KB).

454

Thin film photovoltaic device with multilayer substrate  

DOE Patents (OSTI)

A thin film photovoltaic device which utilizes at least one compound semiconductor layer chosen from Groups IIB and VA of the Periodic Table is formed on a multilayer substrate The substrate includes a lowermost support layer on which all of the other layers of the device are formed. Additionally, an uppermost carbide or silicon layer is adjacent to the semiconductor layer. Below the carbide or silicon layer is a metal layer of high conductivity and expansion coefficient equal to or slightly greater than that of the semiconductor layer.

Catalano, Anthony W. (Rushland, PA); Bhushan, Manjul (Wilmington, DE)

1984-01-01T23:59:59.000Z

455

A thin film transistor driven microchannel device  

E-Print Network (OSTI)

= [8] 25 where n = 4 for the ideal case. However, based on experimental results, typical values for n are between 1 and 2.22 In any case, the larger potential drop appears at the smaller electrode. 2.4. PECVD Thin Film Silicon nitride film... can be deposited by a low-pressure chemical vapor deposition (LPCVD) and plasma enhanced chemical vapor deposition (PECVD). Table II shows a comparison of silicon nitride?s physical properties between two deposition methods. The PECVD silicon...

Lee, Hyun Ho

2005-02-17T23:59:59.000Z

456

MORE POLYSILICON FOR SOLAR CELLS  

Science Journals Connector (OSTI)

MORE POLYSILICON FOR SOLAR CELLS ... MANUFACTURING: OCI and Wacker expand raw material capacity in South Korea and U.S. ...

MELODY VOITH

2010-12-20T23:59:59.000Z

457

Meteorological Effects on Solar Cells  

Science Journals Connector (OSTI)

...research-article Meteorological Effects on Solar Cells J. R. Mallinson P. T. Landsberg...different meteorological conditions on solar cell outputs has been investigated, using a model for a solar cell (p-on-n or n-on-p) which...

1977-01-01T23:59:59.000Z

458

Rapid Deposition Technology Holds the Key for the World's Largest Solar Manufacturer (Fact Sheet)  

SciTech Connect

Thanks in part to years of collaboration with the National Renewable Energy Laboratory (NREL), a manufacturer of thin-film solar modules has grown from a small garage-type operation to become the world's largest manufacturer of solar modules. First Solar, Inc. now manufactures cadmium telluride (CdTe) solar modules throughout the world, but it began in Ohio as a small company called Solar Cells, Inc.

Not Available

2010-10-01T23:59:59.000Z

459

Photovoltaic Cell Material Basics | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Material Basics Material Basics Photovoltaic Cell Material Basics August 19, 2013 - 4:43pm Addthis Although crystalline silicon cells are the most common type, photovoltaic (PV), or solar cells, can be made of many semiconductor materials. Each material has unique strengths and characteristics that influence its suitability for specific applications. For example, PV cell materials may differ based on their crystallinity, bandgap, absorbtion, and manufacturing complexity. Learn more about each of these characteristics below or learn about these solar cell materials: Silicon (Si)-including single-crystalline Si, multicrystalline Si, and amorphous Si Polycrystalline Thin Films-including copper indium diselenide (CIS), cadmium telluride (CdTe), and thin-film silicon Single-Crystalline Thin Films-including high-efficiency material

460

Supply Chain Integration, Product Modularity, and Market Valuation: Evidence from the Solar Energy Industry  

E-Print Network (OSTI)

of the solar modules that are ultimately installed as panels on rooftops to Page 15 convert solar energy to electricity. The supply chain for the production of thin-film cells involves a subset of these processes: the production of solar cells... determine the network by identifying the supply chain linkages reported in 119 newswire announcements of solar PV supply contracts in Factiva for the year 2007. We supplement this data with information on customer and supplier relationships provided...

Davies, Jane; Joglekar, Nitin

2013-07-17T23:59:59.000Z

Note: This page contains sample records for the topic "thin-film solar cell" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

EE580 Solar Cells Todd J. Kaiser  

E-Print Network (OSTI)

7/21/2010 1 EE580 ­ Solar Cells Todd J. Kaiser · Lecture 08 · Solar Cell Characterization 1Montana State University: Solar Cells Lecture 8: Characterization Solar Cell Operation n Emitter p Base Rear completing the circuit 2Montana State University: Solar Cells Lecture 8: Characterization Solar Cell

Kaiser, Todd J.

462

Apparatus for laser assisted thin film deposition  

DOE Patents (OSTI)

A pulsed laser deposition apparatus uses fiber optics to deliver visible output beams. One or more optical fibers are coupled to one or more laser sources, and delivers visible output beams to a single chamber, to multiple targets in the chamber or to multiple chambers. The laser can run uninterrupted if one of the deposition chambers ceases to operate because other chambers can continue their laser deposition processes. The laser source can be positioned at a remote location relative to the deposition chamber. The use of fiber optics permits multi-plexing. A pulsed visible laser beam is directed at a generally non-perpendicular angle upon the target in the chamber, generating a plume of ions and energetic neutral species. A portion of the plume is deposited on a substrate as a thin film. A pulsed visible output beam with a high pulse repetition frequency is used. The high pulse repetition frequency is greater than 500 Hz, and more preferably, greater than about 1000 Hz. Diamond-like-carbon (DLC) is one of the thin films produced using the apparatus. 9 figs.

Warner, B.E.; McLean, W. II

1996-02-13T23:59:59.000Z

463

Experimental characterisations of thin film transmission line losses  

E-Print Network (OSTI)

Experimental characterisations of thin film transmission line losses D. Kim, H. Kim and Y. Eo New frequency-variant losses of planar thin film transmission lines are experimentally investigated in a broad frequency range. The fre- quency-variant transmission line parameters are accurately determined

464

Avalanches through windows: Multiscale visualization in magnetic thin films  

E-Print Network (OSTI)

Avalanches through windows: Multiscale visualization in magnetic thin films Alessandro Magni, Cornell University, Ithaca, NY 14853-2501 Abstract--The dynamics of domain walls motion in thin films dynamics, but are strongly dependent on the size of the windows chosen. Here we investigate how to properly

Sethna, James P.

465

Amorphous hafnium-indium-zinc oxide semiconductor thin film transistors  

Science Journals Connector (OSTI)

We reported on the performance and electrical properties of co-sputtering-processed amorphous hafnium-indium-zinc oxide (?-HfIZO) thin film transistors (TFTs). Co-sputtering-processed ?-HfIZO thin films have shown an amorphous phase in nature. ...

Sheng-Po Chang; San-Syong Shih

2012-01-01T23:59:59.000Z

466

Microstructure and properties of copper thin films on silicon substrates  

E-Print Network (OSTI)

copper thin films but on an expense of conductivity. This study proposes a technique to deposit high strength and high conductivity copper thin films on different silicon substrates at room temperature. Single crystal Cu (100) and Cu (111) have been grown...

Jain, Vibhor Vinodkumar

2009-05-15T23:59:59.000Z

467

Fracture patterns in thin films and multilayers Alex A. Volinsky  

E-Print Network (OSTI)

Fracture patterns in thin films and multilayers Alex A. Volinsky University of South Florida, excessive residual and externally applied stresses cause film fracture. In the case of tensile stress is the key for causing thin film fracture, either in tension, or compression, it is the influence

Volinsky, Alex A.

468

APPLIED PHYSICS REVIEWS Erbium implanted thin film photonic materials  

E-Print Network (OSTI)

, phosphosilicate, borosilicate, and soda-lime glasses , ceramic thin films Al2O3, Y2O3, LiNbO3 , and amorphous. Phosphosilicate glass. . . . . . . . . . . . . . . . . . . . . . 7 C. Soda-lime silicate glass Er-doped thin film photonic materials is described. It focuses on oxide glasses pure SiO2

Polman, Albert

469

Thermodynamic Limits of Solar Cell Efficiency  

Science Journals Connector (OSTI)

A general analysis of the coversion of solar heat to electrical energy in solar cells is presented. Some solar cell structures and processes are described which, in...

Würfel, Peter

470

Advanced Thin Film Thermoelectric Systems forEfficient Air-Conditioner...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Thin Film Thermoelectric Systems forEfficient Air-Conditioners Advanced Thin Film Thermoelectric Systems forEfficient Air-Conditioners Presents recent advances in thermoelectric...

471

Bioinspired Ceramic Thin Film Processing:? Present Status and Future Perspectives  

Science Journals Connector (OSTI)

23 When considering the preparation of thin films through a chemical route, one should realize that modern chemistry as a major branch of science and industry should be developed to emphasize low consumption of raw materials and energy, low generation of waste, and producer/user friendliness. ... 40,42a,60b The experimental method involves the measurement of surface forces using a surface force apparatus (SFA)61 and atomic force microscopy (AFM),62 which are used for measuring forces between two macroscopic surfaces or between a fine tip and a surface, respectively. ... The result is a hybrid technique combining ease of use and ability to see into cells using optical microscopy with the higher resolution of electron microscopy. ...

Yanfeng Gao; Kunihito Koumoto

2005-07-26T23:59:59.000Z

472

Solar Energy Materials & Solar Cells 91 (2007) 13881391 Bifacial configurations for CdTe solar cells  

E-Print Network (OSTI)

Solar Energy Materials & Solar Cells 91 (2007) 1388­1391 Bifacial configurations for CdTe solar We present a different back contact for CdTe solar cell by the application of only a transparent that acts as a free-Cu stable back contact and at the same time allows to realize bifacial CdTe solar cells

Romeo, Alessandro

473

Bilevel contact solar cells  

SciTech Connect

This patent describes a solar cell. It comprises a body of semiconductor material having at least one P/N junction therein, the body including a front face having no electrodes thereon, and a bilevel elevation back face having at least one P-doped region at a first level interdigitated with at least one N-doped region at a second level, wherein the at least one P-doped region and the at least one N-doped region partially overlap to form at least one compensated region; and a positive electrode contacting the at lease one P-doped region and a negative electrode contacting the at least one N-doped region, both electrodes contacting the solar cell on the back face.

Sinton, R.A.

1991-10-01T23:59:59.000Z

474

Characterization of iron oxide thin films for photoelectrochemical hydrogen production.  

E-Print Network (OSTI)

??Solar energy is the most sustainable source of energy available. However, solar applications such as photovoltaic cells represent only a partial solution to weaning our… (more)

George, Kyle Eustace Nelson

2009-01-01T23:59:59.000Z

475

Superlattice-like Ge8Sb92/Ge thin films for high speed and low power consumption phase change memory application  

Science Journals Connector (OSTI)

The amorphous-to-crystalline transitions of superlattice-like Ge8Sb92/Ge thin films were investigated through in situ film resistance measurement. X-ray reflectivity was used to measure the density change before and after phase change. The superlattice-like structure of the thin films was confirmed by using transmission electron microscopy. A picosecond laser pump–probe system was used to study the phase change speed. Phase change memory cells based on the SLL [Ge8Sb92(4 nm)/Ge(3 nm)]7 thin films were fabricated to test and verify the switching speed and operation consumption.

Yifeng Hu; Xiaoyi Feng; Jiwei Zhai; Ting Wen; Tianshu Lai; Sannian Song; Zhitang Song

2014-01-01T23:59:59.000Z

476

Superlattice cascade solar cell  

SciTech Connect

This paper reports progress toward realization of a new cascade solar cell structure whose chief advantages over other present concepts are: use of silicon for the substrate and low bandgap cell; avoidance of the necessity of lattice matching; and incorporation of a GaAs/GaP superlattice to enhance efficiency and provide a low-resistance connecting junction. Details of the design and operation of an OMCVD system for growing this structure are presented. Results of experiments to optimize layer thickness, compositional uniformity, and surface morphology are described.

Wanlass, M.W.; Blakeslee, A.E.

1982-09-01T23:59:59.000Z

477

SOLAR FIRM WINS BIG U.S. LOAN  

Science Journals Connector (OSTI)

SOLYNDRA, a developer of thin-film solar cells, will be the first company to benefit from a long-delayed federal program providing loan guarantees for clean-energy projects. The Department of Energy has offered the Freemont, Calif.-based startup $535 ...

MELODY VOITH

2009-03-30T23:59:59.000Z

478

Low-Cost, Lightweight Solar Concentrators - FY13 Q1 | Department...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

More Documents & Publications Low-Cost, Lightweight Solar Concentrators FY13 Q2 Low-Cost, Lightweight Solar Concentrator Low-Cost Light Weigh Thin Film Solar Concentrators...

479

Glow discharge plasma deposition of thin films  

DOE Patents (OSTI)

A glow discharge plasma reactor for deposition of thin films from a reactive RF glow discharge is provided with a screen positioned between the walls of the chamber and the cathode to confine the glow discharge region to within the region defined by the screen and the cathode. A substrate for receiving deposition material from a reactive gas is positioned outside the screened region. The screen is electrically connected to the system ground to thereby serve as the anode of the system. The energy of the reactive gas species is reduced as they diffuse through the screen to the substrate. Reactive gas is conducted directly into the glow discharge region through a centrally positioned distribution head to reduce contamination effects otherwise caused by secondary reaction products and impurities deposited on the reactor walls.

Weakliem, Herbert A. (Pennington, NJ); Vossen, Jr., John L. (Bridgewater, NJ)

1984-05-29T23:59:59.000Z

480

Thin Film Femtosecond Laser Damage Competition  

SciTech Connect

In order to determine the current status of thin film laser resistance within the private, academic, and government sectors, a damage competition was started at the 2008 Boulder Damage Symposium. This damage competition allows a direct comparison of the current state of the art of high laser resistance coatings since they are tested using the same damage test setup and the same protocol. In 2009 a high reflector coating was selected at a wavelength of 786 nm at normal incidence at a pulse length of 180 femtoseconds. A double blind test assured sample and submitter anonymity so only a summary of the results are presented here. In addition to the laser resistance results, details of deposition processes, coating materials and layer count, and spectral results will also be shared.

Stolz, C J; Ristau, D; Turowski, M; Blaschke, H

2009-11-14T23:59:59.000Z

Note: This page contains sample records for the topic "thin-film solar cell" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

Method and making group IIB metal - telluride films and solar cells  

DOE Patents (OSTI)

A technique is disclosed forming thin films (13) of group IIB metal-telluride, such as Cd.sub.x Zn.sub.1-x Te (0.ltoreq.x.ltoreq.1), on a substrate (10) which comprises depositing Te (18) and at least one of the elements (19) of Cd, Zn, and Hg onto a substrate and then heating the elements to form the telluride. A technique is also provided for doping this material by chemically forming a thin layer of a dopant on the surface of the unreacted elements and then heating the elements along with the layer of dopant. A method is disclosed of fabricating a thin film photovoltaic cell which comprises depositing Te and at least one of the elements of Cd, Zn, and Hg onto a substrate which contains on its surface a semiconductor film (12) and then heating the elements in the presence of a halide of the Group IIB metals, causing the formation of solar cell grade Group IIB metal-telluride film and also causing the formation of a rectifying junction, in situ, between the semiconductor film on the substrate and the Group IIB metal-telluride layer which has been formed.

Basol, Bulent M. (Redondo Beach, CA); Kapur, Vijay K. (Northridge, CA)

1990-08-21T23:59:59.000Z

482

Bulge testing of single and dual layer thin films Dryver R. Huston*ab  

E-Print Network (OSTI)

to a thin film window. By comparing the pressure- displacement relation with a mechanical model, the elastic structures, such as the thin film windows that are used in Next Generation Lithography masks and certain MEMS it in a thin film window. Thin film windows are fabricated by removing the thick substrate out from underneath

Huston, Dryver R.

483

Composition–Structure–Function Diagrams of Ti–Ni–Au Thin Film Shape Memory Alloys  

Science Journals Connector (OSTI)

thin films; annealing; high temperature shape memory alloys; combinatorial materials science; phase transformation ...

Pio John S. Buenconsejo; Alfred Ludwig

2014-11-04T23:59:59.000Z

484

SunShot Concentrating Solar Power Program Review 2013 | Department...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Films and Panels for Next Generation Solar Collectors, Attila Molnar, 3M Company Low-Cost Light Weight Thin Film Solar Concentrators, Gani Ganapathi, Jet Propulsion Laboratory...

485

China Singyes Solar Technologies Holdings Ltd formerly known...  

Open Energy Info (EERE)

with Solar Thin Films to build solar module capacity in China for the domestic BIPV market. Coordinates: 22.277, 113.556808 Show Map Loading map......

486

Monolithic tandem solar cell  

DOE Patents (OSTI)

A single-crystal, monolithic, tandem, photovoltaic solar cell is described which includes (a) an InP substrate having upper and lower surfaces, (b) a first photoactive subcell on the upper surface of the InP substrate, (c) a second photoactive subcell on the first subcell; and (d) an optically transparent prismatic cover layer over the second subcell. The first photoactive subcell is GaInAsP of defined composition. The second subcell is InP. The two subcells are lattice matched. 9 figs.

Wanlass, M.W.

1994-06-21T23:59:59.000Z

487

Introduction to Organic Solar Cells  

Science Journals Connector (OSTI)

Organic solar cells (OSCs) have attracted strong attention in ... the basics of OSCs. The basics of organic semiconductors are first described. We then provide...

Dixon D. S. Fung; Wallace C. H. Choy

2013-01-01T23:59:59.000Z

488

Thermal Management of Solar Cells.  

E-Print Network (OSTI)

??The focus on solar cells as a source of photovoltaic energy is rapidly increasing nowadays. The amount of sun's energy entering earth surface in one… (more)

Saadah, Mohammed Ahmed

2013-01-01T23:59:59.000Z

489

Heterojunction Silicon Microwire Solar Cells  

Science Journals Connector (OSTI)

Heterojunction Silicon Microwire Solar Cells ... § Center for Advanced Photovoltaic Devices and Systems, University of Waterloo, 200 University Ave W, Waterloo, Ontario N2L 3G1, Canada ...

Majid Gharghi; Ehsanollah Fathi; Boubacar Kante; Siva Sivoththaman; Xiang Zhang

2012-11-21T23:59:59.000Z

490

Solar Torx New Solar Ventures | Open Energy Information  

Open Energy Info (EERE)

Torx New Solar Ventures Torx New Solar Ventures Jump to: navigation, search Name Solar Torx / New Solar Ventures Place Arizona Product Set up in November 2005 to secure finance for a thin-film amorphous silicon cell and module manufacturing plant, and an associated 300MW power project. No evidence of progress as of June 2008, has probably been abandoned. References Solar Torx / New Solar Ventures[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Solar Torx / New Solar Ventures is a company located in Arizona . References ↑ "Solar Torx / New Solar Ventures" Retrieved from "http://en.openei.org/w/index.php?title=Solar_Torx_New_Solar_Ventures&oldid=351340" Categories:

491

Thin film transistors on plastic substrates with reflective coatings for radiation protection  

DOE Patents (OSTI)

Fabrication of silicon thin film transistors (TFT) on low-temperature plastic substrates using a reflective coating so that inexpensive plastic substrates may be used in place of standard glass, quartz, and silicon wafer-based substrates. The TFT can be used in large area low cost electronics, such as flat panel displays and portable electronics such as video cameras, personal digital assistants, and cell phones.

Wolfe, Jesse D. (Fairfield, CA); Theiss, Steven D. (Woodbury, MN); Carey, Paul G. (Mountain View, CA); Smith, Patrick M. (San Ramon, CA); Wickbold, Paul (Walnut Creek, CA)

2006-09-26T23:59:59.000Z

492

Method and apparatus for increasing the durability and yield of thin film photovoltaic devices  

DOE Patents (OSTI)

Thin film photovoltaic cells having a pair of semiconductor layers between an opaque and a transparent electrical contact are manufactured in a method which includes the step of scanning one of the semiconductor layers to determine the location of any possible shorting defect. Upon the detection of such defect, the defect is eliminated to increase the durability and yield of the photovoltaic device. 10 figs.

Phillips, J.E.; Lasswell, P.G.

1987-02-03T23:59:59.000Z

493

Functionalized multilayer thin films for protection against acutely toxic agents  

E-Print Network (OSTI)

The recently developed practice of spraying polyelectrolyte solutions onto a substrate in order to construct thin films via the Layer-by-Layer (LbL) technique has been further investigated and extended. In this process a ...

Krogman, Kevin Christopher

2009-01-01T23:59:59.000Z

494

Polycrystalline Thin-Film Research: Cadmium Telluride (Fact Sheet)  

SciTech Connect

This National Center for Photovoltaics sheet describes the capabilities of its polycrystalline thin-film research in the area of cadmium telluride. The scope and core competencies and capabilities are discussed.

Not Available

2013-06-01T23:59:59.000Z

495

National High Magnetic Field Laboratory: Magnetic Thin Films  

NLE Websites -- All DOE Office Websites (Extended Search)

recorded work with magnetic thin films took place in the 1880s and was carried out by German physicist August Kundt. Well known for his research on sound and optics, Kundts...

496

Picosecond laser ablation of nano-sized WTi thin film  

Science Journals Connector (OSTI)

Interaction of an Nd:YAG laser, operating at 532 nm wavelength and pulse duration of 40 ps, with tungsten-titanium (WTi) thin film (thickness, 190 nm)...2...were found to be sufficient for modification of the WTi

S. Petrovi?; B. Gakovi?; D. Peruško; T. Desai; D. Batani; M. ?ekada…

2009-08-01T23:59:59.000Z

497

Quasi-Reversible Oxygen Exchange of Amorphous IGZO Thin Films  

E-Print Network (OSTI)

Center In situ electrical properties of a-IGZO thin films were carried out at 200ºC as a function of carrier content vs. pO2) analysis should be applicable for studying the underlying carrier generation

Shahriar, Selim

498

Flexible, transparent thin film transistors raise hopes for flexible...  

NLE Websites -- All DOE Office Websites (Extended Search)

screens and displays. Virtually all flat-screen TVs and smartphones are made up of thin film transistors today; they form the basis of both LEDs and LCDs (liquid crystal...

499

Role of Microstructural Phenomena in Magnetic Thin Films. Final Report  

SciTech Connect

Over the period of the program we systematically varied microstructural features of magnetic thin films in an attempt to better identify the role which each feature plays in determining selected extrinsic magnetic properties. This report summarizes the results.

Laughlin, D. E.; Lambeth, D. N.

2001-04-30T23:59:59.000Z

500

Self-Assembling Process for Fabricating Tailored Thin Films  

ScienceCinema (OSTI)

A simple, economical nanotechnology coating process that enables the development of nanoparticle thin films with architectures and properties unattainable by any other processing method. 2007 R&D 100 winner (SAND2007-1878P)

Sandia

2009-09-01T23:59:59.000Z