Sample records for nanoparticle solar cells

  1. Fabricating solar cells with silicon nanoparticles

    DOE Patents [OSTI]

    Loscutoff, Paul; Molesa, Steve; Kim, Taeseok

    2014-09-02T23:59:59.000Z

    A laser contact process is employed to form contact holes to emitters of a solar cell. Doped silicon nanoparticles are formed over a substrate of the solar cell. The surface of individual or clusters of silicon nanoparticles is coated with a nanoparticle passivation film. Contact holes to emitters of the solar cell are formed by impinging a laser beam on the passivated silicon nanoparticles. For example, the laser contact process may be a laser ablation process. In that case, the emitters may be formed by diffusing dopants from the silicon nanoparticles prior to forming the contact holes to the emitters. As another example, the laser contact process may be a laser melting process whereby portions of the silicon nanoparticles are melted to form the emitters and contact holes to the emitters.

  2. Nanoparticle Solar Cell Final Technical Report

    SciTech Connect (OSTI)

    Breeze, Alison, J; Sahoo, Yudhisthira; Reddy, Damoder; Sholin, Veronica; Carter, Sue

    2008-06-17T23:59:59.000Z

    The purpose of this work was to demonstrate all-inorganic nanoparticle-based solar cells with photovoltaic performance extending into the near-IR region of the solar spectrum as a pathway towards improving power conversion efficiencies. The field of all-inorganic nanoparticle-based solar cells is very new, with only one literature publication in the prior to our project. Very little is understood regarding how these devices function. Inorganic solar cells with IR performance have previously been fabricated using traditional methods such as physical vapor deposition and sputtering, and solution-processed devices utilizing IR-absorbing organic polymers have been investigated. The solution-based deposition of nanoparticles offers the potential of a low-cost manufacturing process combined with the ability to tune the chemical synthesis and material properties to control the device properties. This work, in collaboration with the Sue Carter research group at the University of California, Santa Cruz, has greatly expanded the knowledge base in this field, exploring multiple material systems and several key areas of device physics including temperature, bandgap and electrode device behavior dependence, material morphological behavior, and the role of buffer layers. One publication has been accepted to Solar Energy Materials and Solar Cells pending minor revision and another two papers are being written now. While device performance in the near-IR did not reach the level anticipated at the beginning of this grant, we did observe one of the highest near-IR efficiencies for a nanoparticle-based solar cell device to date. We also identified several key parameters of importance for improving both near-IR performance and nanoparticle solar cells in general, and demonstrated multiple pathways which showed promise for future commercialization with further research.

  3. ZnO nanoparticles and nanowire array hybrid photoanodes for dye-sensitized solar cells

    E-Print Network [OSTI]

    Cao, Guozhong

    ZnO nanoparticles and nanowire array hybrid photoanodes for dye-sensitized solar cells Supan for dye-sensitized solar cell DSC with NW arrays to serve as a direct pathway for fast electron transport Institute of Physics. doi:10.1063/1.3327339 Dye-sensitized solar cells DSCs have attracted a lot

  4. High-Efficiency 6?? Multicrystalline Black Solar Cells Based on Metal-Nanoparticle-Assisted Chemical Etching

    E-Print Network [OSTI]

    Hsu, W. Chuck

    2012-01-01T23:59:59.000Z

    Multicrystalline silicon (mc-Si) photovoltaic (PV) solar cells with nanoscale surface texturing by metal-nanoparticle-assisted etching are proposed to achieve high power efficiency. The investigation of average nanorod ...

  5. Dye-sensitized solar cells based on a nanoparticle/nanotube bilayer structure and their equivalent circuit analysis

    E-Print Network [OSTI]

    Lin, Zhiqun

    Dye-sensitized solar cells based on a nanoparticle/nanotube bilayer structure and their equivalent 2011, Accepted 1st December 2011 DOI: 10.1039/c2nr11617k Dye-sensitized solar cells (DSSCs) were to become an essential component of future global energy production. Dye sensitized solar cells (DSSCs)1

  6. Flexible dye-sensitized solar cells with ZnO nanoparticles grown by Sonochemistry over Graphene/PET substrates.

    E-Print Network [OSTI]

    Pala, Nezih

    Flexible dye-sensitized solar cells with ZnO nanoparticles grown by Sonochemistry over Graphene and Engineering University of North Texas, Denton, Texas Flexible Dye sensitized solar cells (FDSSCs) are light characteristics of ZnO nanostructures over Graphene/PET as photoanode for flexible dye sensitized solar cells. #12;

  7. Enhanced efficiency of graphene-silicon Schottky junction solar cells by doping with Au nanoparticles

    SciTech Connect (OSTI)

    Liu, X.; Zhang, X. W., E-mail: xwzhang@semi.ac.cn; Yin, Z. G.; Meng, J. H.; Gao, H. L.; Zhang, L. Q.; Zhao, Y. J.; Wang, H. L. [Key Lab of Semiconductor Materials Science, Institute of Semiconductors, CAS, Beijing 100083 (China)

    2014-11-03T23:59:59.000Z

    We have reported a method to enhance the performance of graphene-Si (Gr/Si) Schottky junction solar cells by introducing Au nanoparticles (NPs) onto the monolayer graphene and few-layer graphene. The electron transfer between Au NPs and graphene leads to the increased work function and enhanced electrical conductivity of graphene, resulting in a remarkable improvement of device efficiency. By optimizing the initial thickness of Au layers, the power conversion efficiency of Gr/Si solar cells can be increased by more than three times, with a maximum value of 7.34%. These results show a route for fabricating efficient and stable Gr/Si solar cells.

  8. Edge sharpness Dependence of MNP in plasmonic solar cell In this article we show that in a a-Si ultra thin plsmonic solar cell with silver nano-particle, the

    E-Print Network [OSTI]

    Park, Namkyoo

    Edge sharpness Dependence of MNP in plasmonic solar cell *, , In this article we show that in a a-Si ultra thin plsmonic solar cell with silver nano-particle, the absorption of the light can-Si based plasmonic solar cells, the edge sharpness dependence of periodic silver nano-particle is analyzed

  9. Enhanced electron photoemission by collective lattice resonances in plasmonic nanoparticle-array photodetectors and solar cells

    E-Print Network [OSTI]

    Zhukovsky, Sergei V; Uskov, Alexander V; Protsenko, Igor E; Lavrinenko, Andrei V

    2013-01-01T23:59:59.000Z

    We propose to use collective lattice resonances in plasmonic nanoparticle arrays to enhance photoelectron emission in Schottky-barrier photodetectors and solar cells. We show that the interaction of lattice resonances (the Rayleigh anomaly) and individual particle excitations (localized surface plasmon resonances) leads to stronger local field enhancement and significant increase of the photocurrent compared to the case when only individual particle excitations are present. The results can be used to design new photodetectors with highly selective, tunable spectral response, able to detect photons with the energy below the semiconductor bandgap, and to develop solar cells with increased efficiency.

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

    E-Print Network [OSTI]

    Israelowitz, Miriam; Cong, Tao; Sureshkumar, Radhakrishna

    2013-01-01T23:59:59.000Z

    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...

  11. Ambient-Processed Colloidal Quantum Dot Solar Cells via Individual Pre-Encapsulation of Nanoparticles

    E-Print Network [OSTI]

    Ambient-Processed Colloidal Quantum Dot Solar Cells via Individual Pre-Encapsulation, 2010; E-mail: ted.sargent@utoronto.ca Solution-processed solar cells employing colloidal quantum dots-junction and tandem solar cells both rely on IR-band-gap semiconductors, there has been much recent emphasis

  12. Optimization of nanoparticle structure for improved conversion efficiency of dye solar cell

    SciTech Connect (OSTI)

    Mohamed, Norani Muti, E-mail: noranimuti-mohamed@petronas.com.my [Centre of Innovative Nanostructure and Nanodevices, Universiti Teknologi PETRONAS, Seri Iskandar, 31750 Tronoh, Perak (Malaysia); Zaine, Siti Nur Azella, E-mail: ct.azella@gmail.com.my [Fundamental and Applied Sciences Department, Universiti Teknologi PETRONAS, Seri Iskandar, 31750 Tronoh, Perak (Malaysia)

    2014-10-24T23:59:59.000Z

    Heavy dye loading and the ability to contain the light within the thin layer (typically ?12 ?m) are the requirement needed for the photoelectrode material in order to enhance the harvesting efficiency of dye solar cell. This can be realized by optimizing the particle size with desirable crystal structure. The paper reports the investigation on the dependency of the dye loading and light scattering on the properties of nanostructured photoelectrode materials by comparing 4 different samples of TiO{sub 2} in the form of nanoparticles and micron-sized TiO{sub 2} aggregates which composed of nanocrystallites. Their properties were evaluated by using scanning electron microscopy, X-ray diffraction and UVVis spectroscopy while the performance of the fabricated test cells were measured using universal photovoltaic test system (UPTS) under 1000 W/cm{sup 2} intensity of radiation. Nano sized particles provide large surface area which allow for greater dye adsorption but have no ability to retain the incident light in the TiO{sub 2} film. In contrast, micron-sized particles in the form of aggregates can generate light scattering allowing the travelling distance of the light to be extended and increasing the interaction between the photons and dye molecules adsorb on TiO{sub 2}nanocrystallites. This resulted in an improvement in the conversion efficiency of the aggregates that demonstrates the close relation between light scattering effect and the structure of the photolectrode film.

  13. Multilayer nanoparticle arrays for broad spectrum absorption enhancement in thin film solar cells

    E-Print Network [OSTI]

    Krishnan, Aravind; Krishna, Siva Rama; Khan, Mohammed Zafar Ali

    2013-01-01T23:59:59.000Z

    In this paper, we present a theoretical study on the absorption efficiency enhancement of a thin film amorphous Silicon (a-Si) photovoltaic cell over a broad spectrum of wavelengths using multiple nanoparticle arrays. The light absorption efficiency is enhanced in the lower wavelengths by a nanoparticle array on the surface and in the higher wavelengths by another nanoparticle array embedded in the active region. The efficiency at intermediate wavelengths is enhanced by the constructive interference of plasmon coupled light. We optimize this design by tuning the radius of particles in both arrays, the period of the array and the distance between the two arrays. The optimization results in 61.44% increase in total quantum efficiency for a 500 nm thick a-Si substrate.

  14. The effects of 100 nm-diameter Au nanoparticles on dye-sensitized solar Changwoo Nahm,1

    E-Print Network [OSTI]

    Park, Byungwoo

    The effects of 100 nm-diameter Au nanoparticles on dye-sensitized solar cells Changwoo Nahm,1 nanoparticles for dye-sensitized solar cells (DSSCs). At the optimum Au/TiO2 mass ratio of 0.05, the power nanoparticles were also introduced to the electrodes of dye-sensitized solar cells (DSSCs), and the solar-cell

  15. Influence of surface plasmon resonances of silver nanoparticles on optical and electrical properties of textured silicon solar cell

    SciTech Connect (OSTI)

    Sardana, Sanjay K.; Chava, Venkata S. N.; Thouti, Eshwar; Chander, Nikhil; Komarala, Vamsi K., E-mail: vamsi@ces.iitd.ac.in [Centre for Energy Studies, Indian Institute of Technology Delhi, New Delhi 110016 (India); Kumar, Sanjai [Central Electronics Limited, Sahibabad 201010, Uttar Pradesh (India); Reddy, S. R. [BHEL-Amorphous Silicon Solar Cell Plant, BHEL House, Siri Fort, New Delhi 110049 (India)

    2014-02-17T23:59:59.000Z

    Here, we report average reflectance reduction of ?8% in wavelength range of 300–1100?nm after coupling surface plasmon resonances (SPRs) of silver nanoparticles (NPs) to textured silicon (T-Si) surface. The enhancement of photocurrent from T-Si solar cell in off-resonant SPR region observed due to better radiative efficiency of NPs leading to outflow of scattered far-field into silicon maximized power generating electrons. Improvement in series resistance, fill factor, and open-circuit voltage (insensitive NPs size and morphology) are also observed with NPs along with photocurrent enhancement (sensitive to NPs sizes), which resulted cell efficiency enhancement from 4.49% to 6.42% for large area of 12.24 cm{sup 2}.

  16. Final Report: Sintered CZTS Nanoparticle Solar Cells on Metal Foil; July 26, 2011 - July 25, 2012

    SciTech Connect (OSTI)

    Leidholm, C.; Hotz, C.; Breeze, A.; Sunderland, C.; Ki, W.; Zehnder, D.

    2012-09-01T23:59:59.000Z

    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.

  17. Nanocrystal Solar Cells

    E-Print Network [OSTI]

    Gur, Ilan

    2006-01-01T23:59:59.000Z

    Nov, 2005). Chapter 4 Hybrid solar cells with 3-dimensionalinorganic nanocrystal solar cells 5.1 Introduction In recentoperation of organic based solar cells and distinguish them

  18. Improving the Power Conversion Efficiency of Ultrathin Organic Solar Cells by Incorporating Plasmonic Effects of Spheroidal Metallic Nanoparticles

    E-Print Network [OSTI]

    Park, Namkyoo

    Improving the Power Conversion Efficiency of Ultrathin Organic Solar Cells by Incorporating be exploited to achieve efficient harvesting of solar energy. Notably, the incorporation of plasmonic effects can allow the light harvesting capability of a solar cell to be maintained even as the thickness

  19. Nanocrystal Solar Cells

    E-Print Network [OSTI]

    Gur, Ilan

    2006-01-01T23:59:59.000Z

    of organic based solar cells and distinguish them from theirof nanocrystal-based solar cells. No one approach orNov, 2005). Chapter 4 Hybrid solar cells with 3-dimensional

  20. Nanocrystal Solar Cells

    E-Print Network [OSTI]

    Gur, Ilan

    2006-01-01T23:59:59.000Z

    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

  1. Nanowire-based All Oxide Solar Cells

    SciTech Connect (OSTI)

    Yang*, Benjamin D. Yuhas and Peidong; Yang, Peidong

    2008-12-07T23:59:59.000Z

    We present an all-oxide solar cell fabricated from vertically oriented zinc oxide nanowires and cuprous oxide nanoparticles. Our solar cell consists of vertically oriented n-type zinc oxide nanowires, surrounded by a film constructed from p-type cuprous oxide nanoparticles. Our solution-based synthesis of inexpensive and environmentally benign oxide materials in a solar cell would allow for the facile production of large-scale photovoltaic devices. We found that the solar cell performance is enhanced with the addition of an intermediate oxide insulating layer between the nanowires and the nanoparticles. This observation of the important dependence of the shunt resistance on the photovoltaic performance is widely applicable to any nanowire solar cell constructed with the nanowire array in direct contact with one electrode.

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

    E-Print Network [OSTI]

    Zelinski, Andrew

    2013-01-01T23:59:59.000Z

    Nanoparticles in Dye-Sensitized Solar Cells. ACS Nano. 2012,to the operation of a Dye-Sensitized solar cell. Figure 13:gas sensors, Dye Sensitized Solar Cells, and optical

  3. NANOCOMPOSITE ENABLED SENSITIZED SOLAR CELL

    E-Print Network [OSTI]

    Phuyal, Dibya

    2012-01-01T23:59:59.000Z

    Solar Energy Materials and Solar Cells 93(10): 1728-1723,Solar Energy Materials and Solar Cells 92(8) 39. Sima, C.Y. , Warta, W. , Dunlop, E.D. Solar Cell efficiency tables (

  4. A plasmonically enhanced polymer solar cell with goldsilica coreshell nanorods

    E-Print Network [OSTI]

    Xiong, Qihua

    to conventional silicon solar cells due to the low-cost materi- als, mechanical flexibility and solutionA plasmonically enhanced polymer solar cell with gold­silica core­shell nanorods Xiaoyan Xu: Polymer solar cells Au nanorods Metallic nanoparticles Plasmonic effects a b s t r a c t We report the use

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

    E-Print Network [OSTI]

    Lin, Zhiqun

    An Unconventional Route to High-Efficiency Dye-Sensitized Solar Cells via Embedding Graphitic Thin into the conventional dye- sensitized solar cells (DSSCs), resulting in a remarkably improved cell efficiency due to its followed by direct carbonization. For dye-sensitized TiO2 based solar cells containing carbon/TiO2 thin

  6. Enhanced light-conversion efficiency of titanium-dioxide dye-sensitized solar cells with the addition of

    E-Print Network [OSTI]

    Cao, Guozhong

    Enhanced light-conversion efficiency of titanium- dioxide dye-sensitized solar cells-doped tin oxide (FTO) nanoparticles and the application of such electrodes on dye-sensitized solar cell to the presence of ITO or FTO nanoparticles. Keywords: dye-sensitized solar cell, nanoparticle, electrode film

  7. Thermal Management of Solar Cells

    E-Print Network [OSTI]

    Saadah, Mohammed Ahmed

    2013-01-01T23:59:59.000Z

    heat exchangers, and solar cells," Sci-Tech News, vol. 65,Solar Energy Materials and Solar Cells, vol. 86, pp. 451-Nanostructured Silicon- Based Solar Cells, 2013. X. C. Tong,

  8. Effects of hydrochloric acid treatment of TiO{sub 2} nanoparticles/nanofibers bilayer film on the photovoltaic properties of dye-sensitized solar cells

    SciTech Connect (OSTI)

    Song, Lixin; Du, Pingfan; Shao, Xiaoli; Cao, Houbao; Hui, Quan [Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Ministry of Education, Zhejiang Sci-Tech University, Hangzhou 310018 (China); Xiong, Jie, E-mail: jxiong@zstu.edu.cn [Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Ministry of Education, Zhejiang Sci-Tech University, Hangzhou 310018 (China)

    2013-03-15T23:59:59.000Z

    Highlights: ? The TiO{sub 2} nanoparticles/TiO{sub 2} nanofibers bilayer film was fabricated for DSSC. ? The effects of HCl treated TiO{sub 2} on the performance of DSSC were investigated. ? The potential methods of improving conversion efficiency are suggested. - Abstract: The TiO{sub 2} nanoparticles/nanofibers bilayer film has been fabricated via spin coating and electrospinning followed by calcination. The TiO{sub 2} bilayer film with thickness of about 6.0 ?m is composed of anatase TiO{sub 2} phase. Dye-sensitized solar cells (DSSC) were assembled by hydrochloric acid (HCl) treated TiO{sub 2} film. The results of the photocurrent action spectra, electrochemical impedance spectroscopy (EIS), and I–V curves showed that each photovoltaic parameter of DSSC increased with the concentration of HCl increasing, and reached a maximum value and afterwards decreased. The maximum incident monochromatic photo-to-electron conversion efficiency (at 350 nm) and maximum overall conversion efficiency (?) of 0.05 M HCl treated TiO{sub 2} based DSSC were enhanced to 48.0% and 4.75%, which were respectively increased by 14% and 6.3% than those of DSSC based on untreated TiO{sub 2} film.

  9. Layer-By-Layer Self-Assembly of CIGS Nanoparticles and Polymers for All-Solution Processable Low-Cost, High-Efficiency Solar Cells

    E-Print Network [OSTI]

    Zhou, Yaoqi

    -Cost, High-Efficiency Solar Cells Tung Ho1 , Robert Vittoe3 , Namratha Kakumanu2 , Sudhir Shrestha2-Purdue University Indianapolis (IUPUI), Indianapolis, IN 46202 Thin film solar cells made from copper indium gallium thereby affecting solar cell efficiency. This research aims to study various polymer materials to replace

  10. Thermal Management of Solar Cells

    E-Print Network [OSTI]

    Saadah, Mohammed Ahmed

    2013-01-01T23:59:59.000Z

    cells by cooling and concentration techniques," inheat. Different techniques of cooling solar cells have been

  11. Heterojunction solar cell

    DOE Patents [OSTI]

    Olson, J.M.

    1994-08-30T23:59:59.000Z

    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.

  12. Heterojunction solar cell

    DOE Patents [OSTI]

    Olson, Jerry M. (Lakewood, CO)

    1994-01-01T23:59:59.000Z

    A high-efficiency single heterojunction solar cell 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 effiency 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.

  13. NANOCOMPOSITE ENABLED SENSITIZED SOLAR CELL

    E-Print Network [OSTI]

    Phuyal, Dibya

    2012-01-01T23:59:59.000Z

    Y. , Warta, W. , Dunlop, E.D. Solar Cell efficiency tables (in dye-sensitized solar cells based on Tio2 nanocrystal/R. J. ; Nozik, A. J. Schottky Solar Cells Based on Colloidal

  14. Thermal Management of Solar Cells

    E-Print Network [OSTI]

    Saadah, Mohammed Ahmed

    2013-01-01T23:59:59.000Z

    Nanostructured Silicon- Based Solar Cells, 2013. X. C. Tong,heat exchangers, and solar cells," Sci-Tech News, vol. 65,in crystalline silicon solar cells," Renewable Energy, vol.

  15. Thermal Management of Solar Cells

    E-Print Network [OSTI]

    Saadah, Mohammed Ahmed

    2013-01-01T23:59:59.000Z

    output electricity. Solar cells panels that employ opticalsurfaces such as the solar cell back panel and a heat panelbe shaped as a flat panel below a solar cells array with fin

  16. Thermal Management of Solar Cells

    E-Print Network [OSTI]

    Saadah, Mohammed Ahmed

    2013-01-01T23:59:59.000Z

    D. Mills, "Cooling of photovoltaic cells under concentratedelectric performance of a photovoltaic cells by cooling andSolar Cell A photovoltaic cell is a semiconductor that

  17. NANOCOMPOSITE ENABLED SENSITIZED SOLAR CELL

    E-Print Network [OSTI]

    Phuyal, Dibya

    2012-01-01T23:59:59.000Z

    551, 2005. 2. Graztel, M. Solar Energy Conversion by Dye-Y. , Warta, W. , Dunlop, E.D. Solar Cell efficiency tables (efficiency in dye-sensitized solar cells based on Tio2

  18. Nanocrystal Solar Cells

    SciTech Connect (OSTI)

    Gur, Ilan

    2006-12-15T23:59:59.000Z

    This dissertation presents the results of a research agenda aimed at improving integration and stability in nanocrystal-based solar cells through advances in active materials and device architectures. The introduction of 3-dimensional nanocrystals illustrates the potential for improving transport and percolation in hybrid solar cells and enables novel fabrication methods for optimizing integration in these systems. Fabricating cells by sequential deposition allows for solution-based assembly of hybrid composites with controlled and well-characterized dispersion and electrode contact. Hyperbranched nanocrystals emerge as a nearly ideal building block for hybrid cells, allowing the controlled morphologies targeted by templated approaches to be achieved in an easily fabricated solution-cast device. In addition to offering practical benefits to device processing, these approaches offer fundamental insight into the operation of hybrid solar cells, shedding light on key phenomena such as the roles of electrode-contact and percolation behavior in these cells. Finally, all-inorganic nanocrystal solar cells are presented as a wholly new cell concept, illustrating that donor-acceptor charge transfer and directed carrier diffusion can be utilized in a system with no organic components, and that nanocrystals may act as building blocks for efficient, stable, and low-cost thin-film solar cells.

  19. Photovoltaic solar cell

    DOE Patents [OSTI]

    Nielson, Gregory N; Okandan, Murat; Cruz-Campa, Jose Luis; Resnick, Paul J

    2013-11-26T23:59:59.000Z

    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.

  20. Photovoltaic solar cell

    DOE Patents [OSTI]

    Nielson, Gregory N; Cruz-Campa, Jose Luis; Okandan, Murat; Resnick, Paul J

    2014-05-20T23:59:59.000Z

    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.

  1. Solar cell array interconnects

    DOE Patents [OSTI]

    Carey, P.G.; Thompson, J.B.; Colella, N.J.; Williams, K.A.

    1995-11-14T23:59:59.000Z

    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.

  2. Solar cell array interconnects

    DOE Patents [OSTI]

    Carey, Paul G. (Mountain View, CA); Thompson, Jesse B. (Brentwood, CA); Colella, Nicolas J. (Livermore, CA); Williams, Kenneth A. (Livermore, CA)

    1995-01-01T23:59:59.000Z

    Electrical interconnects 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.

  3. Solar Cells: Spin-Cast Bulk Heterojunction Solar Cells: A Dynamical...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (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,...

  4. Fabrication and Characterization of Organic Solar Cells

    E-Print Network [OSTI]

    Yengel, Emre

    2010-01-01T23:59:59.000Z

    Solar Energy Materials and Solar Cells. 2005;86(2):197-205.in LEDs [18-20] and solar cells [ 20, 21]. What makes thesesolar cells, hybrid solar cells and dye-sensitized solar

  5. Thermal Management of Solar Cells

    E-Print Network [OSTI]

    Saadah, Mohammed Ahmed

    2013-01-01T23:59:59.000Z

    is the ratio of the solar cell output power to the incidentmaximum power output at: The fill factor of a solar cell FFsolar cell temperature by about 15°C, which increases the output power

  6. Thermal Management of Solar Cells

    E-Print Network [OSTI]

    Saadah, Mohammed Ahmed

    2013-01-01T23:59:59.000Z

    ratio of the solar cell output power to the incident lightpower to operate the fan. Natural cooling is preferred for solar

  7. EE580 Solar Cells Todd J. Kaiser

    E-Print Network [OSTI]

    Kaiser, Todd J.

    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

  8. NANOCOMPOSITE ENABLED SENSITIZED SOLAR CELL

    E-Print Network [OSTI]

    Phuyal, Dibya

    2012-01-01T23:59:59.000Z

    efficiency in dye-sensitized solar cells based on Tio2Conversion by Dye-Sensitized Photovoltaic cells. InorganicConversion by Dye-Sensitized Photovoltaic Cells. Inorganic

  9. Broad spectrum solar cell

    DOE Patents [OSTI]

    Walukiewicz, Wladyslaw (Kensington, CA); Yu, Kin Man (Lafayette, CA); Wu, Junqiao (Richmond, CA); Schaff, William J. (Ithaca, NY)

    2007-05-15T23:59:59.000Z

    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.

  10. Fabrication and Characterization of Organic Solar Cells

    E-Print Network [OSTI]

    Yengel, Emre

    2010-01-01T23:59:59.000Z

    electrodes  for  dye? sensitized solar cells.  Nano solar cells and dye-sensitized solar cells. Figure 1-3 The

  11. Monolithic tandem solar cell

    SciTech Connect (OSTI)

    Wanlass, M.W.

    1989-11-03T23:59:59.000Z

    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.

  12. Monolithic tandem solar cell

    SciTech Connect (OSTI)

    Wanlass, M.W.

    1991-05-28T23:59:59.000Z

    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.

  13. Monolithic tandem solar cell

    DOE Patents [OSTI]

    Wanlass, Mark W. (Golden, CO)

    1991-01-01T23:59:59.000Z

    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, and (c) a second photoactive subcell on the first subcell. The first photoactive 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.

  14. EE580 Solar Cells Todd J. Kaiser

    E-Print Network [OSTI]

    Kaiser, Todd J.

    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

  15. Sandia National Laboratories: Novel Nanoparticle Production Method...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    tiesCapabilitiesNovel Nanoparticle Production Method Could Lead to Better Lights, Lenses, Solar Cells Novel Nanoparticle Production Method Could Lead to Better Lights, Lenses,...

  16. Nighttime solar cell

    SciTech Connect (OSTI)

    Parise, R.J.

    1998-07-01T23:59:59.000Z

    Currently photovoltaic (PV) cells convert solar energy into electrical energy at an efficiency of about 18%, with the maximum conversion rate taking place around noon on a cloudless day. In many applications, the PV cells are utilized to recharge a stand-by battery pack that provides electrical energy at night or on cloudy days. Increasing the utilization of the panel array area by producing electrical power at night will reduce the amount of required electrical energy storage for a given array size and increase system reliability. Thermoelectric generators (TEG) are solid state devices that convert thermal energy into electrical energy. Using the nighttime sky, or deep space, with an effective temperature of 3.5 K as a cold sink, the TEG presented here can produce electrical power at night. The hot junction is supplied energy by the ambient air temperature or some other warm temperature source. The cold junction of the TEG is insulated from the surroundings by a vacuum cell, improving its overall effectiveness. Combining the TEG with the PV cell, a unique solid state device is developed that converts electromagnetic radiant energy into usable electrical energy. The thermoelectric-photovoltaic (TEPV) cell, or the Nighttime Solar Cell, is a direct energy conversion device that produces electrical energy both at night and during the day.

  17. High efficiency, radiation-hard solar cells

    E-Print Network [OSTI]

    Ager III, J.W.; Walukiewicz, W.

    2004-01-01T23:59:59.000Z

    Solar Energy Mat. and Solar Cells 75, 261-9 (2003) andD. J. , “Advanced Space Solar Cells,” Prog. Photovolt: Res.Igari, and W. Warta, “Solar Cell Efficiency Tables (Version

  18. Solar Energy Materials & Solar Cells 91 (2007) 13881391 Bifacial configurations for CdTe solar cells

    E-Print Network [OSTI]

    Romeo, Alessandro

    2007-01-01T23:59:59.000Z

    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

  19. Superlattice cascade solar cell

    SciTech Connect (OSTI)

    Wanlass, M.W.; Blakeslee, A.E.

    1982-09-01T23:59:59.000Z

    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.

  20. Study of surface enhanced resonant Raman spectroscopy of chromophores on unaggregated plasmonically active nanoparticles / Surface-enhanced Raman study of the interaction of the PEDOT:PSS and P3HT/PCBM components of organic polymer solar cells with plasmonically active nanoparticles

    E-Print Network [OSTI]

    Stavytska-Barba, Marina Valeriyivna

    2012-01-01T23:59:59.000Z

    S. ; Hummelen, J. C. Plastic Solar Cells. Adv. Funct. Mater.Polman, A. Plasmonic Solar Cells. Opt. Express 2008, 16, (Plasmon Enhanced Silicon Solar Cells. J. Appl. Phys. 2007,

  1. Solar cell module lamination process

    DOE Patents [OSTI]

    Carey, Paul G. (Mountain View, CA); Thompson, Jesse B. (Brentwood, CA); Aceves, Randy C. (Tracy, CA)

    2002-01-01T23:59:59.000Z

    A solar cell module lamination process using fluoropolymers to provide protection from adverse environmental conditions and thus enable more extended use of solar cells, particularly in space applications. A laminate of fluoropolymer material provides a hermetically sealed solar cell module structure that is flexible and very durable. The laminate is virtually chemically inert, highly transmissive in the visible spectrum, dimensionally stable at temperatures up to about 200.degree. C. highly abrasion resistant, and exhibits very little ultra-violet degradation.

  2. Improving Solar-Cell Efficiency

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    2003 | 2002 2001 | 2000 | 1998 | Subscribe to APS Science Highlights rss feed Improving Solar Cell Efficiency October 7, 2014 Bookmark and Share The two-dimensional grazing...

  3. NANOCOMPOSITE ENABLED SENSITIZED SOLAR CELL

    E-Print Network [OSTI]

    Phuyal, Dibya

    2012-01-01T23:59:59.000Z

    Gap NIR – Near Infrared DSSC – Dye Sensitized Solar Cell TiOinterplay among various DSSC components. DSSCs consist of ainvestigated. In a conventional DSSC, a thick semiconducting

  4. Monolithic tandem solar cell

    SciTech Connect (OSTI)

    Wanlass, Mark W. (Golden, CO)

    1994-01-01T23:59:59.000Z

    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.

  5. Monolithic tandem solar cell

    DOE Patents [OSTI]

    Wanlass, M.W.

    1994-06-21T23:59:59.000Z

    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.

  6. The challenges of organic polymer solar cells

    E-Print Network [OSTI]

    Saif Addin, Burhan K. (Burhan Khalid)

    2011-01-01T23:59:59.000Z

    The technical and commercial prospects of polymer solar cells were evaluated. Polymer solar cells are an attractive approach to fabricate and deploy roll-to-roll processed solar cells that are reasonably efficient (total ...

  7. Organic Tandem Solar Cells: Design and Formation

    E-Print Network [OSTI]

    Chen, Chun-Chao

    2015-01-01T23:59:59.000Z

    Y. Wu, and G. Li, ?Polymer solar cells with enhanced open-tandem and triple-junction solar cells,? Materials, 2012, 5(molecules for high performance solar cells,” Advanced Energy

  8. Fabrication and Characterization of Organic Solar Cells

    E-Print Network [OSTI]

    Yengel, Emre

    2010-01-01T23:59:59.000Z

    Würfel P. Physics of solar cells : from principles to newgeneration photovoltaics: solar cells for 2020 and beyond.MB. INDIUM-PHOSPHIDE SOLAR-CELLS MADE BY ION- IMPLANTATION.

  9. Fabrication and Characterization of Organic Solar Cells

    E-Print Network [OSTI]

    Yengel, Emre

    2010-01-01T23:59:59.000Z

    Würfel P.  Physics of solar cells : from principles to new generation  photovoltaics:  solar  cells  for  2020  and Spitzer  MB.   INDIUM?PHOSPHIDE  SOLAR?CELLS  MADE  BY  ION?

  10. Commercialization of Novel Organic Solar Cells

    E-Print Network [OSTI]

    Kassegne, Samuel Kinde

    Commercialization of Novel Organic Solar Cells Master of Engineering Final Report Shanel C. Miller................................................................................................................... 12 2.1 How do Solar Cells Work?.................................................................................................. 12 2.2 Types of Solar Cells that Exist Today

  11. Nontoxic quantum dot research improves solar cells

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Nontoxic quantum dot research improves solar cells Nontoxic quantum dot research improves solar cells Solar cells made with low-cost, nontoxic copper-based quantum dots can achieve...

  12. Sandia National Laboratories: optical encapsulants for solar...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    solar cells Novel Nanoparticle Production Method Could Lead to Better Lights, Lenses, Solar Cells On July 1, 2014, in Capabilities, CINT, Energy, Energy Efficiency, Facilities,...

  13. Nanocrystal Solar Cells

    E-Print Network [OSTI]

    Gur, Ilan

    2006-01-01T23:59:59.000Z

    improving efficiencies of solar photovoltaic technologies.quantum efficiency (EQE) of the associated photovoltaic

  14. DOI: 10.1002/asia.201200349 Dye-Sensitized TiO2 Nanotube Solar Cells: Rational Structural and Surface

    E-Print Network [OSTI]

    Lin, Zhiqun

    DOI: 10.1002/asia.201200349 Dye-Sensitized TiO2 Nanotube Solar Cells: Rational Structural employed to substitute TiO2 nanoparticles for use in dye-sensitized solar cells. To fur- ther improve the performance of dye-sensitized TiO2 nanotube solar cells, efforts have been directed toward the optimization

  15. area solar cells: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    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:...

  16. aluminium arsenide solar cells: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    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:...

  17. Bulb mounting of solar cell

    SciTech Connect (OSTI)

    Thompson, M.E.

    1983-04-05T23:59:59.000Z

    An energy converting assembly is provided for parasiting of light from a fluorescent light bulb utilizing a solar cell. The solar cell is mounted on a base member elongated in the dimension of elongation of the fluorescent bulb, and electrical interconnections to the cell are provided. A flexible sheet of opaque material having a flat white interior reflective surface surrounds the fluorescent bulb and reflects light emitted from the bulb back toward the bulb and the solar cell. The reflective sheet is tightly held in contact with the bottom of the bulb by adhesive, a tie strap, an external clip, or the like.

  18. Sandia National Laboratories: Titanium-di-oxide nanoparticles

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Titanium-di-oxide nanoparticles Novel Nanoparticle Production Method Could Lead to Better Lights, Lenses, Solar Cells On July 1, 2014, in Capabilities, CINT, Energy, Energy...

  19. Dust Detection by the Wave Instrument on STEREO: Nanoparticles Picked up by the Solar Wind?

    E-Print Network [OSTI]

    2009-01-01T23:59:59.000Z

    2007, Basics of the Solar Wind, Cambridge University Press,Picked up by the Solar Wind? N. Meyer-Vernet · M. Maksimovicof magnitude of the solar wind speed. Nanoparticles, which

  20. Solar Energy Materials & Solar Cells 90 (2006) 664677 Invited article

    E-Print Network [OSTI]

    Romeo, Alessandro

    2006-01-01T23:59:59.000Z

    Solar Energy Materials & Solar Cells 90 (2006) 664­677 Invited article Recent developments in evaporated CdTe solar cells G. Khrypunova , A. Romeob , F. Kurdesauc , D.L. Ba¨ tznerd , H. Zogge , A Abstract Recent developments in the technology of high vacuum evaporated CdTe solar cells are reviewed

  1. Un-Nanostructuring Solar Cells | ANSER Center | Argonne-Northwestern...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Un-Nanostructuring Solar Cells Home > Research > ANSER Research Highlights > Un-Nanostructuring Solar Cells...

  2. Module level solutions to solar cell polarization

    DOE Patents [OSTI]

    Xavier, Grace (Fremont, CA), Li; Bo (San Jose, CA)

    2012-05-29T23:59:59.000Z

    A solar cell module includes interconnected solar cells, a transparent cover over the front sides of the solar cells, and a backsheet on the backsides of the solar cells. The solar cell module includes an electrical insulator between the transparent cover and the front sides of the solar cells. An encapsulant protectively packages the solar cells. To prevent polarization, the insulator has resistance suitable to prevent charge from leaking from the front sides of the solar cells to other portions of the solar cell module by way of the transparent cover. The insulator may be attached (e.g., by coating) directly on an underside of the transparent cover or be a separate layer formed between layers of the encapsulant. The solar cells may be back junction solar cells.

  3. Nanowire-based All Oxide Solar Cells

    E-Print Network [OSTI]

    Yang, Peidong

    2009-01-01T23:59:59.000Z

    1999; 7: 471. 6) Rai, B.P. Solar Cells, 1988, 25, 265. 7)Paul, G.K. , Sakurai, T. , Solar Energy, 2006, 80, 715. 9)1999, 2) Green, M.A. , Solar Cells, 1982, Prentice-Hall,

  4. Solar Energy Materials & Solar Cells 91 (2007) 15991610 Improving solar cell efficiency using photonic band-gap materials

    E-Print Network [OSTI]

    Dowling, Jonathan P.

    Solar Energy Materials & Solar Cells 91 (2007) 1599­1610 Improving solar cell efficiency using) solar energy conversion systems (or solar cells) are the most widely used power systems. However and reliable solar-cell devices is presented. We show that due their ability to modify the spectral and angular

  5. EE580 Solar Cells Todd J. Kaiser

    E-Print Network [OSTI]

    Kaiser, Todd J.

    7/21/2010 1 EE580 ­ Solar Cells Todd J. Kaiser · Lecture 10 · Summary 1Montana State University: Solar Cells Lecture 10: Summary Summer 2010 Class Montana State University: Solar Cells Lecture 10: Summary 2 Solar Cell Operation n Emitter p Base Rear Contact Antireflection coating Absorption of photon

  6. Solar cell with back side contacts

    DOE Patents [OSTI]

    Nielson, Gregory N; Okandan, Murat; Cruz-Campa, Jose Luis; Resnick, Paul J; Wanlass, Mark Woodbury; Clews, Peggy J

    2013-12-24T23:59:59.000Z

    A III-V solar cell is described herein that includes all back side contacts. Additionally, the positive and negative electrical contacts contact compoud semiconductor layers of the solar cell other than the absorbing layer of the solar cell. That is, the positive and negative electrical contacts contact passivating layers of the solar cell.

  7. Dye-Sensitized Solar Cells

    Broader source: Energy.gov [DOE]

    DOE supports research and development projects aimed at increasing the efficiency and lifetime of dye-sensitized solar cells (DSSCs). Below are a list of current projects, summary of the benefits,...

  8. Nanocrystal Solar Cells

    E-Print Network [OSTI]

    Gur, Ilan

    2006-01-01T23:59:59.000Z

    research on organic photovoltaic cells since small molecule10 years prior (4). Photovoltaic cells with an active layerof the associated photovoltaic cells. 2.4 Charge transport

  9. Charge Transport Properties in TiO2 Network with Different Particle Sizes for Dye Sensitized Solar Cells

    E-Print Network [OSTI]

    Cao, Guozhong

    the large improvement in performance of dye sensitized solar cells (DSCs) achieved in 1991, mesoporousCharge Transport Properties in TiO2 Network with Different Particle Sizes for Dye Sensitized Solar sensitized solar cells, nanoparticle size, impedance, charge transport properties INTRODUCTION Since

  10. Optimized Designs and Materials for Nanostructure Based Solar Cells

    E-Print Network [OSTI]

    Shao, Qinghui

    2009-01-01T23:59:59.000Z

    band impact ionization and solar cell efficiency,” J. Appl.Solar Energy Materials and Solar Cells 92, 273, (2008). [28]third generation solar cells Solar cells may be formed using

  11. Solar-Hydrogen Fuel-Cell Vehicles

    E-Print Network [OSTI]

    DeLuchi, Mark A.; Ogden, Joan M.

    1993-01-01T23:59:59.000Z

    M. A. (1992). Hydrogen Fuel-Cell Vehicles. Re- koebensteinthan both. Solar-hydrogen and fuel-cell vehicles wouldberegulation. Solar-Hydrogen Fuel-Cell Vehicles MarkA. DeLuchi

  12. Solar cells with a twist Comments ( 35)

    E-Print Network [OSTI]

    Rogers, John A.

    Solar cells with a twist Article Comments ( 35) JULIE STEENHUYSEN REUTERS OCTOBER 7, 2008 AT 9:58 AM EDT CHICAGO -- U.S. researchers have found a way to make efficient silicon-based solar cells of buildings as opportunities for solar energy," Prof. Rogers said in a telephone interview. Solar cells, which

  13. Synthesis, characterization and application of sol-gel derived mesoporous TiO{sub 2} nanoparticles for dye-sensitized solar cells

    SciTech Connect (OSTI)

    Khan, M. Alam; Shaheer Akhtar, M.; Yang, O-Bong [School of Semiconductor and Chemical Engineering, Chonbuk National University, Dukjin Dong, Dukjingu, Jeon-ju (Korea, Republic of)

    2010-12-15T23:59:59.000Z

    Nanocrystalline mesoporous titania of anatase crystal phase were prepared by sol-gel route by varying calcination (400 C and 600 C) conditions, and the photo-electrochemical properties were investigated for dye-sensitized solar cell applications. The TTIP precursor in n-heptane solvent with ratio of water to TTIP (5:1) was found to be effective substrate for the working electrodes. The overall conversion efficiency of 7.59% was achieved under 1 sun irradiation with open circuit voltage of 0.77 V, current density of 17.00 mA/cm{sup 2} and FF of 51.12. The high efficiency of the 400 C calcined sample were attributed to its mesopores, high BET surface area (80.1 m{sup 2}/g) and large pore volume of prepared titania substrate which provide better surface for the absorption of dye, improves light harvesting efficiency and better charge injection. The prepared samples were characterized by XRD, small angle XRD, FE-SEM, TEM, IPCE, I-V curve, BET surface area and BJH plot techniques. (author)

  14. Solar Energy Materials & Solar Cells 78 (2003) 567595 Low-mobility solar cells: a device physics primer

    E-Print Network [OSTI]

    Schiff, Eric A.

    Solar Energy Materials & Solar Cells 78 (2003) 567­595 Low-mobility solar cells: a device physics, Syracuse, New York 13244-1130, USA Abstract The properties of pin solar cells based on photogeneration for the solar conversion efficiency of amorphous silicon-based cells that are limited by valence bandtail

  15. Thermodynamics, Entropy, Information and the Efficiency of Solar Cells

    E-Print Network [OSTI]

    Abrams, Zeev R.

    2012-01-01T23:59:59.000Z

    of analytical expressions for solar cell fill factors.Solar Cells 7, 31. A. Luque and V. Andreev, Concentratorenergy gap terrestrial solar cells. J. Appl. Phys. 51,

  16. Berkeley Lab Sheds Light on Improving Solar Cell Efficiency

    E-Print Network [OSTI]

    Lawrence Berkeley National Laboratory

    2007-01-01T23:59:59.000Z

    light on improving solar cell efficiency Ernest Orlandomanufacturing methods produce solar cells with an efficiencythe impaired performance of solar cells manufactured from

  17. Oligo and Poly-thiophene/Zno Hybrid Nanowire Solar Cells

    E-Print Network [OSTI]

    Briseno, Alejandro L.

    2010-01-01T23:59:59.000Z

    ZnO Hybrid Nanowire Solar Cells Alejandro L. Briseno, Thomashybrid single nanowire solar cell. End-functionalized oligo-Individual nanowire solar cell devices exhibited well-

  18. Organic Solar Cells: Absolute Measurement of Domain Composition...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Organic Solar Cells: Absolute Measurement of Domain Composition and Nanoscale Size Distribution Explains Performance in Solar Cells Organic Solar Cells: Absolute Measurement of...

  19. Development of concentrator solar cells

    SciTech Connect (OSTI)

    Not Available

    1994-08-01T23:59:59.000Z

    A limited pilot production run on PESC silicon solar cells for use at high concentrations (200 to 400 suns) is summarized. The front contact design of the cells was modified for operation without prismatic covers. The original objective of the contract was to systematically complete a process consolidation phase, in which all the, process improvements developed during the contract would be combined in a pilot production run. This pilot run was going to provide, a basis for estimating cell costs when produced at high throughput. Because of DOE funding limitations, the Photovoltaic Concentrator Initiative is on hold, and Applied Solar`s contract was operated at a low level of effort for most of 1993. The results obtained from the reduced scope pilot run showed the effects of discontinuous process optimization and characterization. However, the run provided valuable insight into the technical areas that can be optimized to achieve the original goals of the contract.

  20. (Melanin-Sensitized Solar Cell) : 696220016

    E-Print Network [OSTI]

    the majority dye-sensitized solar cell research all uses the Ruthenium-complex as a light harvester. Dye-sensitized solar cell, DSSC 1991GrätzelDSSC[1] DSSCGrätzel cellDSSC polypyridyl complexes (Melanin-Sensitized Solar Cell) : : : 696220016 #12; #12;#12; #12;I PLD

  1. Advanced Materials and Nano Technology for Solar Cells

    E-Print Network [OSTI]

    Han, Tao

    2014-01-01T23:59:59.000Z

    Solar Energy Materials and Solar Cells 93.6 (2009): 670-673.1-3: The structure diagram of c-Si solar cell and HIT solarof flexible CIGS solar cells and modules." Solar Energy

  2. Dynamics of charge transport and recombination in ZnO nanorod array dye-sensitized solar cells

    E-Print Network [OSTI]

    Dynamics of charge transport and recombination in ZnO nanorod array dye-sensitized solar cells Alex nanoparticles. Introduction Dye-Sensitized Solar Cells (DSSCs) comprise an increasingly attractive alternative photovoltaic technology.1,2 These photo- electrochemical cells use molecular dyes to sensitize high-area, wide

  3. Fabrication and Characterization of Organic Solar Cells

    E-Print Network [OSTI]

    Yengel, Emre

    2010-01-01T23:59:59.000Z

    CdTe/CdS thin-film solar cells. Sol Energ Mat Sol C. 2000;p/n-junction solar cells. Sol Energ Mat Sol C. Wohrle D,

  4. Biomimetic Dye Molecules for Solar Cells

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    provide opportunities for solid-state physicists and chemists to solve a major challenge: solar cell adoption. Though solar cells can use energy directly from the Sun to produce...

  5. Key Physical Mechanisms in Nanostructured Solar Cells

    SciTech Connect (OSTI)

    Dr Stephan Bremner

    2010-07-21T23:59:59.000Z

    The objective of the project was to study both theoretically and experimentally the excitation, recombination and transport properties required for nanostructured solar cells to deliver energy conversion efficiencies well in excess of conventional limits. These objectives were met by concentrating on three key areas, namely, investigation of physical mechanisms present in nanostructured solar cells, characterization of loss mechanisms in nanostructured solar cells and determining the properties required of nanostructured solar cells in order to achieve high efficiency and the design implications.

  6. EE580 Solar Cells Todd J. Kaiser

    E-Print Network [OSTI]

    Kaiser, Todd J.

    7/21/2010 1 EE580 ­ Solar Cells Todd J. Kaiser · Lecture 05 · P-N Junction 1Montana State University: Solar Cells Lecture 5: P-N Junction P-N Junction · Solar Cell is a large area P-N junction electron (hole) positive) 2Montana State University: Solar Cells Lecture 5: P-N Junction p-n Junction p n P

  7. Pokeberries Provide Boost for Solar Cells

    Broader source: Energy.gov [DOE]

    Red dye from the pokeberry weed makes their low-cost, fiber-based solar cells even more energy efficient.

  8. Process of making solar cell module

    DOE Patents [OSTI]

    Packer, M.; Coyle, P.J.

    1981-03-09T23:59:59.000Z

    A process is presented for the manufacture of solar cell modules. A solution comprising a highly plasticized polyvinyl butyral is applied to a solar cell array. The coated array is dried and sandwiched between at last two sheets of polyvinyl butyral and at least two sheets of a rigid transparent member. The sandwich is laminated by the application of heat and pressure to cause fusion and bonding of the solar cell array with the rigid transparent members to produce a solar cell module.

  9. Core-Shell Nanopillar Array Solar Cells using Cadmium Sulfide Coating on Indium Phosphide Nanopillars

    E-Print Network [OSTI]

    Tu, Bor-An Clayton

    2013-01-01T23:59:59.000Z

    Monocrystalline silicon solar cells, polycrystalline silicon solar cells, and amorphous silicon (thin-film) solar

  10. EE580 Solar Cells Todd J. Kaiser

    E-Print Network [OSTI]

    Kaiser, Todd J.

    7/21/2010 1 EE580 ­ Solar Cells Todd J. Kaiser · Lecture 09 · Photovoltaic Systems 1Montana State University: Solar Cells Lecture 9: PV Systems Several types of operating modes · Centralized power plant or wanted Montana State University: Solar Cells Lecture 9: PV Systems 2 Residential Side Mounted Montana

  11. EE580 Solar Cells Todd J. Kaiser

    E-Print Network [OSTI]

    Kaiser, Todd J.

    7/21/2010 1 EE580 ­ Solar Cells Todd J. Kaiser · Lecture 02 Microfabrication ­ A combination · Photolithograpy · Depostion · Etching 1 Montana State University: Solar Cells Lecture 2: Microfabrication Flow Montana State University: Solar Cells Lecture 2: Microfabrication Questions · What is heat? · Heat

  12. Accurate performance measurement of silicon solar cells

    E-Print Network [OSTI]

    accuracy. The light source is very important when calibrating solar cells. Commonly used light sourcesAccurate performance measurement of silicon solar cells William Murray Keogh July 2001 A thesis is an important part of the solar cell manufacturing process. Two classes of measurement can be considered

  13. Nanowire-based All Oxide Solar Cells

    E-Print Network [OSTI]

    Yang, Peidong

    2009-01-01T23:59:59.000Z

    7: 471. 6) Rai, B.P. Solar Cells, 1988, 25, 265. 7) Minami,1999, 2) Green, M.A. , Solar Cells, 1982, Prentice-Hall,of ZnO nanowire array used in solar cells, prior to Cu 2 O

  14. EE580 Solar Cells Todd J. Kaiser

    E-Print Network [OSTI]

    Kaiser, Todd J.

    7/21/2010 1 EE580 ­ Solar Cells Todd J. Kaiser · Lecture 07 · EE Fundamentals 1Montana State University: Solar Cells Lecture 7: EE Fundamentals What is Electrical Engineering · Opposite of lightning · Symbolic information: electronics Montana State University: Solar Cells Lecture 7: EE Fundamentals 2 Review

  15. EE580 Solar Cells Todd J. Kaiser

    E-Print Network [OSTI]

    Kaiser, Todd J.

    7/21/2010 1 EE580 ­ Solar Cells Todd J. Kaiser · Lecture 04 · Semiconductor Materials · Chapter 1 1Montana State University: Solar Cells Lecture 4: Semiconductor Materials Semiconductor Bond Model · Bohr electrons interact to form bonds 2Montana State University: Solar Cells Lecture 4: Semiconductor Materials

  16. Detailed balance analysis of nanophotonic solar cells

    E-Print Network [OSTI]

    Fan, Shanhui

    Detailed balance analysis of nanophotonic solar cells Sunil Sandhu, Zongfu Yu, and Shanhui Fan-voltage characteristic modeling of nanophotonic solar cells. This approach takes into account the intrinsic material non-idealities, and is useful for determining the theoretical limit of solar cell efficiency for a given structure. Our approach

  17. EE580 Solar Cells Todd J. Kaiser

    E-Print Network [OSTI]

    Kaiser, Todd J.

    7/21/2010 1 EE580 ­ Solar Cells Todd J. Kaiser · Lecture 03 · Nature of Sunlight 1Montana State University: Solar Cells Lecture 3: Nature of Sunlight Wave-Particle Duality · Light acts as ­ Waves University: Solar Cells Lecture 3: Nature of Sunlight Properties of Light · Sunlight contains photons of many

  18. Optimized Designs and Materials for Nanostructure Based Solar Cells

    E-Print Network [OSTI]

    Shao, Qinghui

    2009-01-01T23:59:59.000Z

    electrodes for dye-sensitized solar cells,” Nano Lett. 8 (electrodes for dye-sensitized solar cells,” Nano Letters 8,

  19. When Function Follows Form: Plastic Solar Cells | ANSER Center...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    When Function Follows Form: Plastic Solar Cells Home > Research > ANSER Research Highlights > When Function Follows Form: Plastic Solar Cells...

  20. Ames Lab 101: Improving Solar Cell Efficiency

    ScienceCinema (OSTI)

    Biswas, Rana

    2012-08-29T23:59:59.000Z

    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.

  1. NANO REVIEW Enhancing Solar Cell Efficiencies through 1-D Nanostructures

    E-Print Network [OSTI]

    Chen, Junhong

    include dye-sensitized solar cells, quantum- dot-sensitized solar cells, and p-n junction solar cells their efficiencies more practical. Now the third-generation solar cells, such as dye-sensitized solar cells (DSSCsNANO REVIEW Enhancing Solar Cell Efficiencies through 1-D Nanostructures Kehan Yu Ă? Junhong Chen

  2. Mixed ternary heterojunction solar cell

    DOE Patents [OSTI]

    Chen, Wen S. (Seattle, WA); Stewart, John M. (Seattle, WA)

    1992-08-25T23:59:59.000Z

    A thin film heterojunction solar cell and a method of making it has a p-type layer of mixed ternary I-III-VI.sub.2 semiconductor material in contact with an n-type layer of mixed binary II-VI semiconductor material. The p-type semiconductor material includes a low resistivity copper-rich region adjacent the back metal contact of the cell and a composition gradient providing a minority carrier mirror that improves the photovoltaic performance of the cell. The p-type semiconductor material preferably is CuInGaSe.sub.2 or CuIn(SSe).sub.2.

  3. Solar cells Improved Hybrid Solar Cells via in situ UV Polymerization

    E-Print Network [OSTI]

    Sibener, Steven

    Solar cells Improved Hybrid Solar Cells via in situ UV Polymerization Sanja Tepavcevic, Seth B-enhanced solar energy conversion. By using this simple in situ UV polymerization method that couples mobility of the photoactive layer can be enhanced. 1. Introduction Hybrid solar cells have been developed

  4. Solar Cells, 3 (1981) 337 -340 337 HIGH EFFICIENCY BIFACIAL BACK SURFACE FIELD SOLAR CELLS

    E-Print Network [OSTI]

    del Alamo, JesĂşs A.

    . CUEVAS, A. LUQUE, J. EGUREN and J. DEL ALAMO Instituto de Energia Solar, Escuela Tdcnica Superior deSolar Cells, 3 (1981) 337 - 340 337 HIGH EFFICIENCY BIFACIAL BACK SURFACE FIELD SOLAR CELLS A solar cells are presented. Effi- ciencies of 15.7% and 13.6% were measured under front and back air mass

  5. Spectral sensitization of nanocrystalline solar cells

    DOE Patents [OSTI]

    Spitler, Mark T. (Concord, MA); Ehret, Anne (Malden, MA); Stuhl, Louis S. (Bedford, MA)

    2002-01-01T23:59:59.000Z

    This invention relates to dye sensitized polycrystalline photoelectrochemical solar cells for use in energy transduction from light to electricity. It concerns the utility of highly absorbing organic chromophores as sensitizers in such cells and the degree to which they may be utilized alone and in combination to produce an efficient photoelectrochemical cell, e.g., a regenerative solar cell.

  6. Laser Assisted Nanomanufacturing with Solution Processed Nanoparticles for Low-cost Electronics and Photovoltaics

    E-Print Network [OSTI]

    Pan, Heng

    2009-01-01T23:59:59.000Z

    5.1 Introduction Dye-sensitized solar cells (DSSCs) are ato fabricate dye sensitized solar cells (DSSCs) on glass andof TiO 2 Nanoparticles for Dye Sensitized Solar Cells 5.1

  7. Three-junction solar cell

    DOE Patents [OSTI]

    Ludowise, Michael J. (Cupertino, CA)

    1986-01-01T23:59:59.000Z

    A photovoltaic solar cell is formed in a monolithic semiconductor. The cell contains three junctions. In sequence from the light-entering face, the junctions have a high, a medium, and a low energy gap. The lower junctions are connected in series by one or more metallic members connecting the top of the lower junction through apertures to the bottom of the middle junction. The upper junction is connected in voltage opposition to the lower and middle junctions by second metallic electrodes deposited in holes 60 through the upper junction. The second electrodes are connected to an external terminal.

  8. Solar Cell Nanotechnology Final Technical Report

    SciTech Connect (OSTI)

    Das, Biswajit [University of Nevada, Las Vegas

    2014-05-07T23:59:59.000Z

    The objective of this project is to develop a low cost nonlithographic nanofabrication technology for the fabrication of thin film porous templates as well as uniform arrays of semiconductor nanostructures for the implementation of high efficiency solar cells. Solar cells based on semiconductor nanostructures are expected to have very high energy conversion efficiencies due to the increased absorption coefficients of semiconductor nanostructures. In addition, the thin film porous template can be used for optimum surface texturing of solar cells leading to additional enhancement in energy conversion efficiency. An important requirement for these applications is the ability to synthesize nanostructure arrays of different dimensions with good size control. This project employed nanoporous alumina templates created by the anodization of aluminum thin films deposited on glass substrates for the fabrication of the nanostructures and optimized the process parameters to obtain uniform pore diameters. An additional requirement is uniformity or regularity of the nanostructure arrays. While constant current anodization was observed to provide controlled pore diameters, constant voltage anodization was needed for regularity of the nanostructure arrays. Thus a two-step anodization process was investigated and developed in this project for improving the pore size distribution and pore periodicity of the nanoporous alumina templates. CdTe was selected to be the active material for the nanowires, and the process for the successful synthesis of CdTe nanowires was developed in this project. Two different synthesis approaches were investigated in this project, electrochemical and electrophoretic deposition. While electrochemical synthesis was successfully employed for the synthesis of nanowires inside the pores of the alumina templates, the technique was determined to be non-optimum due to the need of elevated temperature that is detrimental to the structural integrity of the nanoporous alumina templates. In order to eliminate this problem, electrophoretic deposition was selected as the more appropriate technique, which involves the guided deposition of semiconductor nanoparticles in the presence of ultrasonic energy to form the crystalline nanowires. Extensive experimental research was carried out to optimize the process parameters for formation of crystalline nanowires. It was observed that the environmental bath temperature plays a critical role in determining the structural integrity of the nanowires and hence their lengths. Investigation was carried out for the formation of semitransparent ohmic contacts on the nanowires to facilitate photocurrent spectroscopy measurements as well as for solar cell implementation. Formation of such ohmic contacts was found to be challenging and a process involving mechanical and electrochemical polishing was developed to facilitate such contacts. The use of nanoporous alumina templates for the surface texturing of mono- and multi-crystalline solar cells was extensively investigated by electrochemical etching of the silicon through the pores of the nanoporous templates. The processes for template formation as well as etching were optimized and the alumina/silicon interface was investigated using capacitance-voltage characterization. The process developed was found to be viable for improving solar cell performance.

  9. Investigation of the Role of Trap States in Solar Cell Reliability using Photothermal Deflection Spectroscopy

    E-Print Network [OSTI]

    Bezryadina, Anna Sergeyevna

    2012-01-01T23:59:59.000Z

    organic, hybrid and dye sensitized solar cells took place insolar cells, dye-sensitized solar cells, solar inks using

  10. Bypass diode for a solar cell

    DOE Patents [OSTI]

    Rim, Seung Bum (Palo Alto, CA); Kim, Taeseok (San Jose, CA); Smith, David D. (Campbell, CA); Cousins, Peter J. (Menlo Park, CA)

    2012-03-13T23:59:59.000Z

    Bypass diodes for solar cells are described. In one embodiment, a bypass diode for a solar cell includes a substrate of the solar cell. A first conductive region is disposed above the substrate, the first conductive region of a first conductivity type. A second conductive region is disposed on the first conductive region, the second conductive region of a second conductivity type opposite the first conductivity type.

  11. Solar Cell Modules With Improved Backskin

    DOE Patents [OSTI]

    Gonsiorawski, Ronald C. (Danvers, MA)

    2003-12-09T23:59:59.000Z

    A laminated solar cell module comprises a front light transmitting support, a plurality of interconnected solar cells encapsulated by a light-transmitting encapsulant material, and an improved backskin formed of an ionomer/nylon alloy. The improved backskin has a toughness and melting point temperature sufficiently great to avoid any likelihood of it being pierced by any of the components that interconnect the solar cells.

  12. The Effects of Nanoparticle Augmentation of Nitrate Thermal Storage Materials for Use in Concentrating Solar Power Applications 

    E-Print Network [OSTI]

    Betts, Matthew

    2011-08-08T23:59:59.000Z

    sodium nitrate and potassium nitrate eutectic, commercially called Hitec Solar Salt. Two nanoparticle types were chosen, alumina and silica. The nanoparticle composite materials were fabricated by mixing the components in an aqueous solution, mixing...

  13. Very High Efficiency Solar Cell Modules

    SciTech Connect (OSTI)

    Barnett, A.; Kirkpatrick, D.; Honsberg, C.; Moore, D.; Wanlass, M.; Emery, K.; Schwartz, R.; Carlson, D.; Bowden, S.; Aiken, D.; Gray, A.; Kurtz, S.; Kazmerski, L., et al

    2009-01-01T23:59:59.000Z

    The Very High Efficiency Solar Cell (VHESC) program is developing integrated optical system - PV modules for portable applications that operate at greater than 50% efficiency. We are integrating the optical design with the solar cell design, and have entered previously unoccupied design space. Our approach is driven by proven quantitative models for the solar cell design, the optical design, and the integration of these designs. Optical systems efficiency with an optical efficiency of 93% and solar cell device results under ideal dichroic splitting optics summing to 42.7 {+-} 2.5% are described.

  14. Fabrication and Characterization of Organic Solar Cells

    E-Print Network [OSTI]

    Yengel, Emre

    2010-01-01T23:59:59.000Z

    MA. Third generation photovoltaics: solar cells for 2020 andNS. Organic photovoltaics : mechanisms, materials, andtables (Version 27). Prog Photovoltaics. 2006;14(1):45-51.

  15. Fabrication and Characterization of Organic Solar Cells

    E-Print Network [OSTI]

    Yengel, Emre

    2010-01-01T23:59:59.000Z

    York: Wiley; 1998. Short circuit current of a solar cell [circuit voltage, short circuit current and maximum powerinterface. (ii) Short circuit current (I sc ); In the ideal

  16. Pennsylvania Company Develops Solar Cell Printing Technology

    Broader source: Energy.gov [DOE]

    The technology uses Plextronics’ conductive inks that can be printed by manufacturers worldwide to make solar cells, potentially as easily as they might print a newspaper.

  17. Improved monolithic tandem solar cell

    SciTech Connect (OSTI)

    Wanlass, M.W.

    1991-04-23T23:59:59.000Z

    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 surf ace 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.

  18. Solar Cells | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty Edit with form HistoryRistmaSinosteel CorporationSocovoltaicSolaer saSolar Cells Jump

  19. Current and lattice matched tandem solar cell

    DOE Patents [OSTI]

    Olson, Jerry M. (Lakewood, CO)

    1987-01-01T23:59:59.000Z

    A multijunction (cascade) tandem photovoltaic solar cell device is fabricated of a Ga.sub.x In.sub.1-x P (0.505.ltoreq.X.ltoreq.0.515) top cell semiconductor lattice matched to a GaAs bottom cell semiconductor at a low-resistance heterojunction, preferably a p+/n+ heterojunction between the cells. The top and bottom cells are both lattice matched and current matched for high efficiency solar radiation conversion to electrical energy.

  20. Front contact solar cell with formed emitter

    DOE Patents [OSTI]

    Cousins, Peter John

    2014-11-04T23:59:59.000Z

    A bipolar solar cell includes a backside junction formed by an N-type silicon substrate and a P-type polysilicon emitter formed on the backside of the solar cell. An antireflection layer may be formed on a textured front surface of the silicon substrate. A negative polarity metal contact on the front side of the solar cell makes an electrical connection to the substrate, while a positive polarity metal contact on the backside of the solar cell makes an electrical connection to the polysilicon emitter. An external electrical circuit may be connected to the negative and positive metal contacts to be powered by the solar cell. The positive polarity metal contact may form an infrared reflecting layer with an underlying dielectric layer for increased solar radiation collection.

  1. Front contact solar cell with formed emitter

    DOE Patents [OSTI]

    Cousins, Peter John (Menlo Park, CA)

    2012-07-17T23:59:59.000Z

    A bipolar solar cell includes a backside junction formed by an N-type silicon substrate and a P-type polysilicon emitter formed on the backside of the solar cell. An antireflection layer may be formed on a textured front surface of the silicon substrate. A negative polarity metal contact on the front side of the solar cell makes an electrical connection to the substrate, while a positive polarity metal contact on the backside of the solar cell makes an electrical connection to the polysilicon emitter. An external electrical circuit may be connected to the negative and positive metal contacts to be powered by the solar cell. The positive polarity metal contact may form an infrared reflecting layer with an underlying dielectric layer for increased solar radiation collection.

  2. High-Efficiency, Self-Concentrating Nanoscale Solar Cell - Energy...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Solar Photovoltaic Solar Photovoltaic Find More Like This Return to Search High-Efficiency, Self-Concentrating Nanoscale Solar Cell Lawrence Berkeley National Laboratory Contact...

  3. Method for processing silicon solar cells

    DOE Patents [OSTI]

    Tsuo, Y. Simon (Golden, CO); Landry, Marc D. (Lafayette, CO); Pitts, John R. (Lakewood, CO)

    1997-01-01T23:59:59.000Z

    The instant invention teaches a novel method for fabricating silicon solar cells utilizing concentrated solar radiation. The solar radiation is concentrated by use of a solar furnace which is used to form a front surface junction and back-surface field in one processing step. The present invention also provides a method of making multicrystallline silicon from amorphous silicon. The invention also teaches a method of texturing the surface of a wafer by forming a porous silicon layer on the surface of a silicon substrate and a method of gettering impurities. Also contemplated by the invention are methods of surface passivation, forming novel solar cell structures, and hydrogen passivation.

  4. Method for processing silicon solar cells

    DOE Patents [OSTI]

    Tsuo, Y.S.; Landry, M.D.; Pitts, J.R.

    1997-05-06T23:59:59.000Z

    The instant invention teaches a novel method for fabricating silicon solar cells utilizing concentrated solar radiation. The solar radiation is concentrated by use of a solar furnace which is used to form a front surface junction and back-surface field in one processing step. The present invention also provides a method of making multicrystalline silicon from amorphous silicon. The invention also teaches a method of texturing the surface of a wafer by forming a porous silicon layer on the surface of a silicon substrate and a method of gettering impurities. Also contemplated by the invention are methods of surface passivation, forming novel solar cell structures, and hydrogen passivation. 2 figs.

  5. Enhancing solar cells with plasmonic nanovoids

    E-Print Network [OSTI]

    Lal, Niraj Narsey

    2012-07-03T23:59:59.000Z

    This thesis explores the use of plasmonic nanovoids for enhancing the efficiency of thin-film solar cells. Devices are fabricated inside plasmonically resonant nanostructures, demonstrating a new class of plasmonic photovoltaics. Novel cell...

  6. Low-Cost Photovoltaics: Luminescent Solar Concentrators And Colloidal Quantum Dot Solar Cells

    E-Print Network [OSTI]

    Leow, Shin Woei

    2014-01-01T23:59:59.000Z

    enhancing the efficiency of solar cells and extending theirA. J. Nozik, “Quantum dot solar cells,” Phys. E Low-Dimens.oxide PbS quantum dot solar cells at low temperature,” Appl.

  7. Low-Cost Photovoltaics: Luminescent Solar Concentrators And Colloidal Quantum Dot Solar Cells

    E-Print Network [OSTI]

    Leow, Shin Woei

    2014-01-01T23:59:59.000Z

    1.6 Schematic of a solar panel with PV cells connected inand installation cost of solar panels and enhance PV cell1.6 Schematic of a solar panel with PV cells connected in

  8. Sensitized energy transfer for organic solar cells, optical solar concentrators, and solar pumped lasers

    E-Print Network [OSTI]

    Reusswig, Philip David

    2014-01-01T23:59:59.000Z

    The separation of chromophore absorption and excitonic processes, such as singlet exciton fission and photoluminescence, offers several advantages to the design of organic solar cells and luminescent solar concentrators ...

  9. Uptake and cytotoxicity of chitosan nanoparticles in human liver cells

    SciTech Connect (OSTI)

    Loh, Jing Wen [Laboratory for Drug Delivery, Pharmacy, University of Western Australia, 35 Stirling Hwy, Crawley, 6009 (Australia); Yeoh, George [School of Biomedical, Biomolecular and Chemical Sciences, University of Western Australia, 35 Stirling Hwy, Crawley, 6009 (Australia); Centre for Medical Research, Western Australian Institute for Medical Research, Nedlands, WA 6009 (Australia); Saunders, Martin [Centre for Microscopy, Characterisation and Analysis, University of Western Australia, 35 Stirling Hwy, Crawley, 6009 (Australia); Lim, Lee-Yong, E-mail: limly@cyllene.uwa.edu.a [Laboratory for Drug Delivery, Pharmacy, University of Western Australia, 35 Stirling Hwy, Crawley, 6009 (Australia); School of Biomedical, Biomolecular and Chemical Sciences, University of Western Australia, 35 Stirling Hwy, Crawley, 6009 (Australia)

    2010-12-01T23:59:59.000Z

    Despite extensive research into the biomedical and pharmaceutical applications of nanoparticles, and the liver being the main detoxifying organ in the human body, there are limited studies which delineate the hepatotoxicity of nanoparticles. This paper reports on the biological interactions between liver cells and chitosan nanoparticles, which have been widely recognised as biocompatible. Using the MTT assay, human liver cells were shown to tolerate up to 4 h of exposure to 0.5% w/v of chitosan nanoparticles (18 {+-} 1 nm, 7.5 {+-} 1.0 mV in culture medium). At nanoparticle concentrations above 0.5% w/v, cell membrane integrity was compromised as evidenced by leakage of alanine transaminase into the extracellular milieu, and there was a dose-dependent increase in CYP3A4 enzyme activity. Uptake of chitosan nanoparticles into the cell nucleus was observed by confocal microscopic analysis after 4 h exposure with 1% w/v of chitosan nanoparticles. Electron micrographs further suggest necrotic or autophagic cell death, possibly caused by cell membrane damage and resultant enzyme leakage.

  10. Thermodynamics, Entropy, Information and the Efficiency of Solar Cells

    E-Print Network [OSTI]

    Abrams, Zeev R.

    2012-01-01T23:59:59.000Z

    At Silicon Solar Cell Performance. Energ. Conv. 11, 63 (efficiency of solar cells. Sol. Energ. Mat. Sol. C. 139. E.Solar Cells: Comparison between Carrier Multiplication and Down- Conversion, Sol. Energ.

  11. Highly Mismatched Alloys for Intermediate Band Solar Cells

    E-Print Network [OSTI]

    2005-01-01T23:59:59.000Z

    for Intermediate Band Solar Cells W. Walukiewicz 1 , K. M.single-junction intermediate band solar cells. Figure 5:conversion efficiency for a solar cell fabricated from a Zn

  12. Molecular solution processing of metal chalcogenide thin film solar cells

    E-Print Network [OSTI]

    Yang, Wenbing

    2013-01-01T23:59:59.000Z

    3-6,3-7] Chalcopyrite CIGS solar cells, without introducingperformance CISS and CIGS solar cells with efficiencies uptellurium might impede CIGS/CdTe solar cells from reaching

  13. CRADA Final Report: Process development for hybrid solar cells

    E-Print Network [OSTI]

    Ager, Joel W

    2011-01-01T23:59:59.000Z

    development for hybrid solar cells Summary of the specific20 wafers with full tandem solar cell test structure perNitride/Silicon Tandem Solar Cell,” Appl. Phys. Express 2

  14. Thermodynamics, Entropy, Information and the Efficiency of Solar Cells

    E-Print Network [OSTI]

    Abrams, Zeev R.

    2012-01-01T23:59:59.000Z

    91, 43. T. Markvart, Solar cell as a heat engine: energy–Tiedje, Physical Limits to Solar Cell Efficiency, in EnergyThe Carnot Factor in Solar-Cell Theory. Solid State

  15. Optimized Designs and Materials for Nanostructure Based Solar Cells

    E-Print Network [OSTI]

    Shao, Qinghui

    2009-01-01T23:59:59.000Z

    the intermediate band solar cell under nonideal space chargeInGaP/GaAs tandem solar cells,” Appl. Phys. Lett. 70, 381 (band impact ionization and solar cell efficiency,” J. Appl.

  16. Quantum Junction Solar Cells Jiang Tang,,

    E-Print Network [OSTI]

    Quantum Junction Solar Cells Jiang Tang,, Huan Liu,, David Zhitomirsky,§ Sjoerd Hoogland,§ Xihua, 1037 Luoyu Road, Wuhan, Hubei 430074, China § Department of Electrical and Computer Engineering-type and p-type materials to create the first quantum junction solar cells. We present a family

  17. Advanced Materials and Nano Technology for Solar Cells

    E-Print Network [OSTI]

    Han, Tao

    2014-01-01T23:59:59.000Z

    price has been reduced by 3/4. 1.2.2 SOLAR CELL CLASSIFICATION Generally, solar cells achieve the Photovoltaic

  18. New Morphological Paradigm Uncovered in Organic Solar Cells

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    complexity. Improving Solar Cell Models Organic photovoltaics (OPVs), or solar cells, have the potential to provide a low-cost and renewable source of environmentally...

  19. Hybrid Solar Cells via UV Polymerization of Polymer Precursor...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Solar Cells via UV Polymerization of Polymer Precursor Technology available for licensing: A method to create improved hybrid solar cells through the ultraviolet (UV)...

  20. Understanding Collection-Related Losses in Organic Solar Cells...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Understanding Collection-Related Losses in Organic Solar Cells Home > Research > ANSER Research Highlights > Understanding Collection-Related Losses in Organic Solar Cells...

  1. Sandia National Laboratories: dye-sensitized solar cell

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    dye-sensitized solar cell Combining 'Tinkertoy' Materials with Solar Cells for Increased Photovoltaic Efficiency On December 4, 2014, in Energy, Materials Science, News, News &...

  2. The Design of Organic Polymers and Small Molecules to Improve the Efficiency of Excitonic Solar Cells

    E-Print Network [OSTI]

    Armstrong, Paul Barber

    2010-01-01T23:59:59.000Z

    J. The physics of solar cells; Imperial College Press,for organic polymer solar cells investigated to date. Theincluding organic solar cells and dye-sensitized solar

  3. Core-Shell Nanopillar Array Solar Cells using Cadmium Sulfide Coating on Indium Phosphide Nanopillars

    E-Print Network [OSTI]

    Tu, Bor-An Clayton

    2013-01-01T23:59:59.000Z

    Monocrystalline silicon solar cells, polycrystalline silicon solar cells, and amorphous silicon (thin-film)

  4. Bypass diode for a solar cell

    DOE Patents [OSTI]

    Rim, Seung Bum; Kim, Taeseok; Smith, David D; Cousins, Peter J

    2013-11-12T23:59:59.000Z

    Methods of fabricating bypass diodes for solar cells are described. In once embodiment, a method includes forming a first conductive region of a first conductivity type above a substrate of a solar cell. A second conductive region of a second conductivity type is formed on the first conductive region. In another embodiment, a method includes forming a first conductive region of a first conductivity type above a substrate of a solar cell. A second conductive region of a second conductivity type is formed within, and surrounded by, an uppermost portion of the first conductive region but is not formed in a lowermost portion of the first conductive region.

  5. Heterojunction solar cell with passivated emitter surface

    DOE Patents [OSTI]

    Olson, J.M.; Kurtz, S.R.

    1994-05-31T23:59:59.000Z

    A high-efficiency 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. A passivating window layer of defined composition is disposed over the emitter 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 window layer. 1 fig.

  6. Heterojunction solar cell with passivated emitter surface

    DOE Patents [OSTI]

    Olson, Jerry M. (Lakewood, CO); Kurtz, Sarah R. (Golden, CO)

    1994-01-01T23:59:59.000Z

    A high-efficiency heterojunction solar cell wherein a thin emitter layer (preferably Ga.sub.0.52 In.sub.0.48 P) forms a heterojunction with a GaAs absorber layer. A passivating window layer of defined composition is disposed over the emitter 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 window layer.

  7. Indium oxide/n-silicon heterojunction solar cells

    DOE Patents [OSTI]

    Feng, Tom (Morris Plains, NJ); Ghosh, Amal K. (New Providence, NJ)

    1982-12-28T23:59:59.000Z

    A high photo-conversion efficiency indium oxide/n-silicon heterojunction solar cell is spray deposited from a solution containing indium trichloride. The solar cell exhibits an Air Mass One solar conversion efficiency in excess of about 10%.

  8. * Corresponding author. Solar Energy Materials & Solar Cells 58 (1999) 209}218

    E-Print Network [OSTI]

    Romeo, Alessandro

    * Corresponding author. Solar Energy Materials & Solar Cells 58 (1999) 209}218 A highly e$cient and stable CdTe/CdS thin "lm solar cell N. Romeo, A. Bosio, R. Tedeschi*, A. Romeo, V. Canevari Dipartimento$cient and stable CdTe/CdS thin "lm solar cells. Our cells are prepared in three subsequent phases. Firstly, we

  9. Solar Energy Materials & Solar Cells 71 (2002) 261271 Photoelectric behavior of nanocrystalline TiO2

    E-Print Network [OSTI]

    Huang, Yanyi

    . A sandwich-type solar cell fabricated by this dye-sensitized nanocrystalline TiO2 film generated 6:1 mA cmĂ?2; Nanocrystalline TiO2; Dye sensitized solar cell; Terpyridyl ruthenium dyes; Photoelectrochemical solar cells unmatched performance in dye staff studied as solar cell sensitizer before 1997. Only recently, a black dye

  10. Microstructured surface design for omnidirectional antireflection coatings on solar cells

    E-Print Network [OSTI]

    Zhou, Weidong

    Microstructured surface design for omnidirectional antireflection coatings on solar cells Weidong to current crystalline silicon solar cells, as well as future thin film, quantum dot, and organic solar cells for light collection is vital in achieving high performance solar cells.1 An ideal antireflec- tion AR

  11. High efficiency, radiation-hard solar cells

    E-Print Network [OSTI]

    Ager III, J.W.; Walukiewicz, W.

    2004-01-01T23:59:59.000Z

    J. F. Geisz, “Superior radiation resistance of In 1-x Ga x Nand H. Itoh, “Proton radiation analysis of multi-junction56326 High efficiency, radiation-hard solar cells Final

  12. Rational design of hybrid organic solar cells

    E-Print Network [OSTI]

    Lentz, Levi (Levi Carl)

    2014-01-01T23:59:59.000Z

    In this thesis, we will present a novel design for a nano-structured organic-inorganic hybrid photovoltaic material that will address current challenges in bulk heterojunction (BHJ) organic-based solar cell materials. ...

  13. Colloidal cluster phases and solar cells 

    E-Print Network [OSTI]

    Mailer, Alastair George

    2012-11-28T23:59:59.000Z

    The arrangement of soft materials through solution processing techniques is a topic of profound importance for next generation solar cells; the resulting morphology has a major influence on construction, performance and ...

  14. Texturization of multicrystalline silicon solar cells

    E-Print Network [OSTI]

    Li, Dai-Yin

    2010-01-01T23:59:59.000Z

    A significant efficiency gain for crystalline silicon solar cells can be achieved by surface texturization. This research was directed at developing a low-cost, high-throughput and reliable texturing method that can create ...

  15. Dye-sensitized solar cells

    DOE Patents [OSTI]

    Skotheim, Terje A. [Berkeley, CA

    1980-03-04T23:59:59.000Z

    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.

  16. Dye-sensitized solar cells

    DOE Patents [OSTI]

    Skotheim, T.A.

    1980-03-04T23:59:59.000Z

    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.

  17. Atomic-Scale Simulation of Colloidal Nanoparticle Forces and Kristen A. Fichthorn

    E-Print Network [OSTI]

    Bjørnstad, Ottar Nordal

    areas in dye-sensitized solar cells, where their aggregation and interfacial structure can influence cells. Nanoparticles also figure prominently in solar-cell technologies, for example as efficient light

  18. Limit of light coupling into solar cells

    E-Print Network [OSTI]

    Naqavi, A; Ballif, C; Scharf, T; Herzig, H P

    2013-01-01T23:59:59.000Z

    We introduce a limit for the strength of coupling light into the modes of solar cells. This limit depends on both a cell's thickness and its modal properties. For a cell with refractive index n and thickness d, we obtain a maximal coupling rate of 2c*sqrt(n^2-1)/d where c is speed of light. Our method can be used in the design of solar cells and in calculating their efficiency limits; besides, it can be applied to a broad variety of resonant phenomena and devices.

  19. NANOCOMPOSITE ENABLED SENSITIZED SOLAR CELL

    E-Print Network [OSTI]

    Phuyal, Dibya

    2012-01-01T23:59:59.000Z

    by Dye-Sensitized Photovoltaic cells. Inorganic Chemistry,by Dye-Sensitized Photovoltaic Cells. Inorganic ChemistryThe characteristics of a photovoltaic cell. Generally,

  20. Plastic Schottky-barrier solar cells

    DOE Patents [OSTI]

    Waldrop, J.R.; Cohen, M.J.

    1981-12-30T23:59:59.000Z

    A photovoltaic cell structure is fabricated from an active medium including an undoped polyacetylene, organic semiconductor. When a film of such material is in rectifying contact with a metallic area electrode, a Schottky-barrier junction is obtained within the body of the cell structure. Also, a gold overlayer passivates a magnesium layer on the undoped polyacetylene film. With the proper selection and location of elements a photovoltaic cell structure and solar cell are obtained.

  1. Nanoscale Charge Transport in Excitonic Solar Cells

    SciTech Connect (OSTI)

    Venkat Bommisetty, South Dakota State University

    2011-06-23T23:59:59.000Z

    Excitonic solar cells, including all-organic, hybrid organic-inorganic and dye-sensitized solar cells (DSSCs), offer strong potential for inexpensive and large-area solar energy conversion. Unlike traditional inorganic semiconductor solar cells, where all the charge generation and collection processes are well understood, these excitonic solar cells contain extremely disordered structures with complex interfaces which results in large variations in nanoscale electronic properties and has a strong influence on carrier generation, transport, dissociation and collection. Detailed understanding of these processes is important for fabrication of highly efficient solar cells. Efforts to improve efficiency are underway at a large number of research groups throughout the world focused on inorganic and organic semiconductors, photonics, photophysics, charge transport, nanoscience, ultrafast spectroscopy, photonics, semiconductor processing, device physics, device structures, interface structure etc. Rapid progress in this multidisciplinary area requires strong synergetic efforts among researchers from diverse backgrounds. Such effort can lead to novel methods for development of new materials with improved photon harvesting and interfacial treatments for improved carrier transport, process optimization to yield ordered nanoscale morphologies with well defined electronic structures.

  2. Investigating the efficiency of Silicon Solar cells at

    E-Print Network [OSTI]

    Attari, Shahzeen Z.

    Investigating the efficiency of Silicon Solar cells at different temperatures and wavelengths to study the characteristics of silicon photovoltaic cells (solar cells). We vary the wavelength of light as well as the temperature of the solar cell to investigate how the open voltage across the cell varies

  3. Solar Energy Materials & Solar Cells 88 (2005) 6573 Investigation of pulsed non-melt laser annealing

    E-Print Network [OSTI]

    Anderson, Timothy J.

    Solar Energy Materials & Solar Cells 88 (2005) 65­73 Investigation of pulsed non-melt laser annealing on the film properties and performance of Cu(In,Ga)Se2 solar cells Xuege Wanga , Sheng S. Lia,�, C time to modify near- surface defects and related junction properties in Cu(In,Ga)Se2 (CIGS) solar cells

  4. Solar Energy Materials & Solar Cells 75 (2003) 307312 Extreme radiation hardness and light-weighted

    E-Print Network [OSTI]

    Woodall, Jerry M.

    Solar Energy Materials & Solar Cells 75 (2003) 307­312 Extreme radiation hardness and light-weighted thin-film indium phosphide solar cell and its computer simulation Guohua Lia, *, Qingfen Yanga+ -i-p+ InP solar cell is developed. The total thickness of its epitaxial layer is only 0.22 mm

  5. Cytotoxicity of monodispersed chitosan nanoparticles against the Caco-2 cells

    SciTech Connect (OSTI)

    Loh, Jing Wen [Laboratory for Drug Delivery, Pharmacy, Characterisation and Analysis, University of Western Australia (Australia)] [Laboratory for Drug Delivery, Pharmacy, Characterisation and Analysis, University of Western Australia (Australia); Saunders, Martin [Centre for Microscopy, Characterisation and Analysis, University of Western Australia (Australia)] [Centre for Microscopy, Characterisation and Analysis, University of Western Australia (Australia); Lim, Lee-Yong, E-mail: lee.lim@uwa.edu.au [Laboratory for Drug Delivery, Pharmacy, Characterisation and Analysis, University of Western Australia (Australia) [Laboratory for Drug Delivery, Pharmacy, Characterisation and Analysis, University of Western Australia (Australia); School of Biomedical, Biomolecular and Chemical Sciences, 35 Stirling Hwy, Crawley 6009 (Australia)

    2012-08-01T23:59:59.000Z

    Published toxicology data on chitosan nanoparticles (NP) often lack direct correlation to the in situ size and surface characteristics of the nanoparticles, and the repeated NP assaults as experienced in chronic use. The aim of this paper was to breach these gaps. Chitosan nanoparticles synthesized by spinning disc processing were characterised for size and zeta potential in HBSS and EMEM at pHs 6.0 and 7.4. Cytotoxicity against the Caco-2 cells was evaluated by measuring the changes in intracellular mitochondrial dehydrogenase activity, TEER and sodium fluorescein transport data and cell morphology. Cellular uptake of NP was observed under the confocal microscope. Contrary to established norms, the collective data suggest that the in vitro cytotoxicity of NP against the Caco-2 cells was less influenced by positive surface charges than by the particle size. Particle size was in turn determined by the pH of the medium in which the NP was dispersed, with the mean size ranging from 25 to 333 nm. At exposure concentration of 0.1%, NP of 25 ± 7 nm (zeta potential 5.3 ± 2.8 mV) was internalised by the Caco-2 cells, and the particles were observed to inflict extensive damage to the intracellular organelles. Concurrently, the transport of materials along the paracellular pathway was significantly facilitated. The Caco-2 cells were, however, capable of recovering from such assaults 5 days following NP removal, although a repeat NP exposure was observed to produce similar effects to the 1st exposure, with the cells exhibiting comparable resiliency to the 2nd assault. -- Highlights: ? Chitosan nanoparticles reduced mitochondrial dehydrogenase activity. ? Cellular uptake of chitosan nanoparticles was observed. ? Chitosan nanoparticles inflicted extensive damage to the cell morphology. ? The transport of materials along the paracellular pathway was facilitated.

  6. Questions I will answer What is a solar cell?

    E-Print Network [OSTI]

    McGehee, Michael

    grid 4 #12;5 #12;Solar panels on the Interna9onal Space Sta9on 6 #12;Area#12;Questions I will answer · What is a solar cell? · How are solar cells are solar cells made? · How do they work? · How efficient can they be? · How

  7. Sandia National Laboratories: high-efficiency solar cells

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    cells Sandia and EMCORE: Solar Photovoltaics, Fiber Optics, MODE, and Energy Efficiency On March 29, 2013, in Concentrating Solar Power, Energy, Partnership, Photovoltaic,...

  8. Liquid cooled, linear focus solar cell receiver

    DOE Patents [OSTI]

    Kirpich, Aaron S. (Broomall, PA)

    1985-01-01T23:59:59.000Z

    Separate structures for electrical insulation and thermal conduction are established within a liquid cooled, linear focus solar cell receiver for use with parabolic or Fresnel optical concentrators. The receiver includes a V-shaped aluminum extrusion having a pair of outer faces each formed with a channel receiving a string of solar cells in thermal contact with the extrusion. Each cell string is attached to a continuous glass cover secured within the channel with spring clips to isolate the string from the external environment. Repair or replacement of solar cells is effected simply by detaching the spring clips to remove the cover/cell assembly without interrupting circulation of coolant fluid through the receiver. The lower surface of the channel in thermal contact with the cells of the string is anodized to establish a suitable standoff voltage capability between the cells and the extrusion. Primary electrical insulation is provided by a dielectric tape disposed between the coolant tube and extrusion. Adjacent solar cells are soldered to interconnect members designed to accommodate thermal expansion and mismatches. The coolant tube is clamped into the extrusion channel with a releasably attachable clamping strip to facilitate easy removal of the receiver from the coolant circuit.

  9. Method of restoring degraded solar cells

    DOE Patents [OSTI]

    Staebler, D.L.

    1983-02-01T23:59:59.000Z

    Amorphous silicon solar cells have been shown to have efficiencies which degrade as a result of long exposure to light. Annealing such cells in air at a temperature of about 200 C for at least 30 minutes restores their efficiency. 2 figs.

  10. Method of restoring degraded solar cells

    DOE Patents [OSTI]

    Staebler, David L. (Lawrenceville, NJ)

    1983-01-01T23:59:59.000Z

    Amorphous silicon solar cells have been shown to have efficiencies which degrade as a result of long exposure to light. Annealing such cells in air at a temperature of about 200.degree. C. for at least 30 minutes restores their efficiency.

  11. Liquid cooled, linear focus solar cell receiver

    DOE Patents [OSTI]

    Kirpich, A.S.

    1983-12-08T23:59:59.000Z

    Separate structures for electrical insulation and thermal conduction are established within a liquid cooled, linear focus solar cell receiver for use with parabolic or Fresnel optical concentrators. The receiver includes a V-shaped aluminum extrusion having a pair of outer faces each formed with a channel receiving a string of solar cells in thermal contact with the extrusion. Each cell string is attached to a continuous glass cover secured within the channel with spring clips to isolate the string from the external environment. Repair or replacement of solar cells is effected simply by detaching the spring clips to remove the cover/cell assembly without interrupting circulation of coolant fluid through the receiver. The lower surface of the channel in thermal contact with the cells of the string is anodized to establish a suitable standoff voltage capability between the cells and the extrusion. Primary electrical insulation is provided by a dielectric tape disposed between the coolant tube and extrusion. Adjacent solar cells are soldered to interconnect members designed to accommodate thermal expansion and mismatches. The coolant tube is clamped into the extrusion channel with a releasably attachable clamping strip to facilitate easy removal of the receiver from the coolant circuit.

  12. The Kanatzidis - Chang Cell: dye sensitized all solid state solar...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    The Kanatzidis - Chang Cell: dye sensitized all solid state solar cell Home > Research > ANSER Research Highlights > The Kanatzidis - Chang Cell: dye sensitized all solid state...

  13. Method of fabricating a solar cell array

    DOE Patents [OSTI]

    Lazzery, Angelo G. (Oaklyn, NJ); Crouthamel, Marvin S. (Pennsauken, NJ); Coyle, Peter J. (Oaklyn, NJ)

    1982-01-01T23:59:59.000Z

    A first set of pre-tabbed solar cells are assembled in a predetermined array with at least part of each tab facing upward, each tab being fixed to a bonding pad on one cell and abutting a bonding pad on an adjacent cell. The cells are held in place with a first vacuum support. The array is then inverted onto a second vacuum support which holds the tabs firmly against the cell pads they abut. The cells are exposed to radiation to melt and reflow the solder pads for bonding the tab portions not already fixed to bonding pads to these pads.

  14. Evaluation of Composite Alumina Nanoparticle and Nitrate Eutectic Materials for use in Concentrating Solar Power Plants

    E-Print Network [OSTI]

    Malik, Darren R.

    2010-07-14T23:59:59.000Z

    of the Solar Two power tower and is currently employed as the TES material at Andasol 1 in Spain. Concentrations of alumina nanoparticles between 0.1% and 10% by weight were introduced into the base material in an effort to create nanofluids which would exhibit...

  15. Semitransparent ultrathin CdTe solar cells Semitransparent ultrathin CdTe solar cells and durabilityand durability

    E-Print Network [OSTI]

    Rollins, Andrew M.

    Semitransparent ultrathin CdTe solar cells Semitransparent ultrathin CdTe solar cells lines · Thinfilm CIGS--not available in transparent form · Dye sensitized solar thin films· Dye.E. McCandless, W.A. Buchanan. "High throughput processing of CdTe/CdS solar cells with thin absorber

  16. Core-Shell Nanopillar Array Solar Cells using Cadmium Sulfide Coating on Indium Phosphide Nanopillars

    E-Print Network [OSTI]

    Tu, Bor-An Clayton

    2013-01-01T23:59:59.000Z

    Nanocrystalline dye-sensitized solar cell/copper indium3, pp. M. Grätzel, “Dye-sensitized solar cells,” Journal ofefficiency solar cell based on dye- sensitized colloidal

  17. Ultrahigh Efficiency Multiband Solar Cells Final Report for Director's Innovation Initiative Project DII-2005-1221

    E-Print Network [OSTI]

    Ager III, Joel W.; Walukiewicz, W.; Yu, Kin Man

    2006-01-01T23:59:59.000Z

    of Multijunction Solar Cell Performance in RadiationIgari, and W. Warta, “Solar Cell Efficiency Tables (Versionof Multijunction Solar Cell Performance in Radiation

  18. Air stable all-inorganic nanocrystal solar cells processed from solution

    E-Print Network [OSTI]

    Gur, Ilan; Fromer, Neil A.; Geier, Michael L.; Alivisatos, A. Paul

    2005-01-01T23:59:59.000Z

    Bube, Fundamentals of Solar Cells (Academic Press, New York,of organic based solar cells and distinguish them from theirinorganic nanocrystal solar cells processed from solution

  19. Achieving High Performance Polymer Tandem Solar Cells via Novel Materials Design

    E-Print Network [OSTI]

    Dou, Letian

    2014-01-01T23:59:59.000Z

    polymers for organic solar cell applications. Chem. Rev.Hummelen, J. C. , Plastic solar cells. Adv. Funct. Mater.polymer design for tandem solar cells and achieved certified

  20. Design of Nanostructured Solar Cells Using Coupled Optical and Electrical Modeling

    E-Print Network [OSTI]

    Deceglie, Michael G

    2014-01-01T23:59:59.000Z

    Energy  Materials  and  Solar  Cells   39.   Spinelli,  J. ,   The  physics  of  solar  cells.  Imperial  College  Si   wire   array   solar   cells,   Proceeding   of   the  

  1. Hybrid Solar Cells with Prescribed Nanoscale Morphologies Based on Hyperbranched Semiconductor Nanocrystals

    E-Print Network [OSTI]

    Gur, Ilan; Fromer, Neil A.; Chen, Chih-Ping; Kanaras, Antonios G.; Alivisatos, A. Paul

    2006-01-01T23:59:59.000Z

    polymer bulk heterojunction solar cells. Journal of PhysicalS. & Meissner, D. Hybrid solar cells based on nanoparticlesmodelling of organic solar cells: The dependence of internal

  2. Catching some rays: Organic solar cells make a leap forward ...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    resources Primer on solar power Solar Car Lesson Plan Catching some rays: Organic solar cells make a leap forward By Jared Sagoff * June 13, 2012 Tweet EmailPrint Drawn...

  3. Fundamental limit of nanophotonic light trapping in solar cells

    E-Print Network [OSTI]

    Fan, Shanhui

    -generation solar cells. The ultimate success of photovoltaic (PV) cell technology requires great advancementsFundamental limit of nanophotonic light trapping in solar cells Zongfu Yu1 , Aaswath Raman and is becoming increasingly urgent for current solar cell research. The standard theory of light trapping

  4. EELE408 Photovoltaics Lecture 16: Silicon Solar Cell Fabrication Techniques

    E-Print Network [OSTI]

    Kaiser, Todd J.

    ;3 Screen Printed Solar Cells · Firing the contacts ­ The furnace heats the cell to a high temperature by Efficiency 22 Rear Panel before Lamination 23 Buried Contact Solar Cells · High Efficiency · Laser groved1 EELE408 Photovoltaics Lecture 16: Silicon Solar Cell Fabrication Techniques Dr. Todd J. Kaiser

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

    E-Print Network [OSTI]

    Deceglie, Michael G.

    2014-01-01T23:59:59.000Z

    silicon thin film solar cells," Solar Energy, vol. 77, pp.nano-crystalline silicon n–i–p solar cells," Solar EnergyMaterials and Solar Cells, vol. 93, pp. H. Sakai, T.

  6. Core-Shell Nanopillar Array Solar Cells using Cadmium Sulfide Coating on Indium Phosphide Nanopillars

    E-Print Network [OSTI]

    Tu, Bor-An Clayton

    2013-01-01T23:59:59.000Z

    for the improvement of CdTe solar cells,” Solar EnergySolar Energy Materials and Solar Cells, vol. 93, no. 4, pp.Materials and Solar Cells, vol. 95, no. 3, pp. 816–820, Mar.

  7. Structural Integration of Silicon Solar Cells and Lithium-ion Batteries Using Printed Electronics

    E-Print Network [OSTI]

    Kang, Jin Sung

    2012-01-01T23:59:59.000Z

    Solar Energy Materials and Solar Cells, vol. 93, 2009, pp.Solar energy materials and solar cells, vol. 91, 2007, pp.to integrate thin-film solar cells and batteries (2)

  8. Advanced Nanomaterials for High-Efficiency Solar Cells

    SciTech Connect (OSTI)

    Chen, Junhong [University of Wisconsin-Milwaukee] [University of Wisconsin-Milwaukee

    2013-11-29T23:59:59.000Z

    Energy supply has arguably become one of the most important problems facing humankind. The exponential demand for energy is evidenced by dwindling fossil fuel supplies and record-high oil and gas prices due to global population growth and economic development. This energy shortage has significant implications to the future of our society, in addition to the greenhouse gas emission burden due to consumption of fossil fuels. Solar energy seems to be the most viable choice to meet our clean energy demand given its large scale and clean/renewable nature. However, existing methods to convert sun light into electricity are not efficient enough to become a practical alternative to fossil fuels. This DOE project aims to develop advanced hybrid nanomaterials consisting of semiconductor nanoparticles (quantum dots or QDs) supported on graphene for cost-effective solar cells with improved conversion efficiency for harvesting abundant, renewable, clean solar energy to relieve our global energy challenge. Expected outcomes of the project include new methods for low-cost manufacturing of hybrid nanostructures, systematic understanding of their properties that can be tailored for desired applications, and novel photovoltaic cells. Through this project, we have successfully synthesized a number of novel nanomaterials, including vertically-oriented graphene (VG) sheets, three-dimensional (3D) carbon nanostructures comprising few-layer graphene (FLG) sheets inherently connected with CNTs through sp{sup 2} carbons, crumpled graphene (CG)-nanocrystal hybrids, CdSe nanoparticles (NPs), CdS NPs, nanohybrids of metal nitride decorated on nitrogen-doped graphene (NG), QD-carbon nanotube (CNT) and QD-VG-CNT structures, TiO{sub 2}-CdS NPs, and reduced graphene oxide (RGO)-SnO{sub 2} NPs. We further assembled CdSe NPs onto graphene sheets and investigated physical and electronic interactions between CdSe NPs and the graphene. Finally we have demonstrated various applications of these nanomaterials in solar cells (both as photoanodes and counter electrodes), gas sensors, and energy storage devices. This research is potentially transformative since the availability of affordable hybrid nanostructures and their fundamental properties will enable various innovative applications of the multifunctional hybrid nanostructures and thus will accelerate new discoveries and inventions in nanoscience and nanotechnology.

  9. Multi-junction solar cell device

    DOE Patents [OSTI]

    Friedman, Daniel J. (Lakewood, CO); Geisz, John F. (Wheat Ridge, CO)

    2007-12-18T23:59:59.000Z

    A multi-junction solar cell device (10) is provided. The multi-junction solar cell device (10) comprises either two or three active solar cells connected in series in a monolithic structure. The multi-junction device (10) comprises a bottom active cell (20) having a single-crystal silicon substrate base and an emitter layer (23). The multi-junction device (10) further comprises one or two subsequent active cells each having a base layer (32) and an emitter layer (23) with interconnecting tunnel junctions between each active cell. At least one layer that forms each of the top and middle active cells is composed of a single-crystal III-V semiconductor alloy that is substantially lattice-matched to the silicon substrate (22). The polarity of the active p-n junction cells is either p-on-n or n-on-p. The present invention further includes a method for substantially lattice matching single-crystal III-V semiconductor layers with the silicon substrate (22) by including boron and/or nitrogen in the chemical structure of these layers.

  10. Flexible implementation of rigid solar cell technologies.

    SciTech Connect (OSTI)

    Hollowell, Andrew E.

    2010-08-01T23:59:59.000Z

    As a source of clean, remote energy, photovoltaic (PV) systems are an important area of research. The majority of solar cells are rigid materials with negligible flexibility. Flexible PV systems possess many advantages, such as being transportable and incorporable on diverse structures. Amorphous silicon and organic PV systems are flexible; however, they lack the efficiency and lifetime of rigid cells. There is also a need for PV systems that are light weight, especially in space and flight applications. We propose a solution to this problem by arranging rigid cells onto a flexible substrate creating efficient, light weight, and flexible devices. To date, we have created a working prototype of our design using the 1.1cm x 1cm Emcore cells. We have achieved a better power to weight ratio than commercially available PowerFilm{reg_sign}, which uses thin film silicon yielding .034W/gram. We have also tested our concept with other types of cells and verified that our methods are able to be adapted to any rigid solar cell technology. This allows us to use the highest efficiency devices despite their physical characteristics. Depending on the cell size we use, we can rival the curvature of most available flexible PV devices. We have shown how the benefits of rigid solar cells can be integrated into flexible applications, allowing performance that surpasses alternative technologies.

  11. High throughput solar cell ablation system

    DOE Patents [OSTI]

    Harley, Gabriel; Pass, Thomas; Cousins, Peter John; Viatella, John

    2012-09-11T23:59:59.000Z

    A solar cell is formed using a solar cell ablation system. The ablation system includes a single laser source and several laser scanners. The laser scanners include a master laser scanner, with the rest of the laser scanners being slaved to the master laser scanner. A laser beam from the laser source is split into several laser beams, with the laser beams being scanned onto corresponding wafers using the laser scanners in accordance with one or more patterns. The laser beams may be scanned on the wafers using the same or different power levels of the laser source.

  12. Solar cell contact formation using laser ablation

    DOE Patents [OSTI]

    Harley, Gabriel; Smith, David D.; Cousins, Peter John

    2014-07-22T23:59:59.000Z

    The formation of solar cell contacts using a laser is described. A method of fabricating a back-contact solar cell includes forming a poly-crystalline material layer above a single-crystalline substrate. The method also includes forming a dielectric material stack above the poly-crystalline material layer. The method also includes forming, by laser ablation, a plurality of contacts holes in the dielectric material stack, each of the contact holes exposing a portion of the poly-crystalline materiat layer; and forming conductive contacts in the plurality of contact holes.

  13. High throughput solar cell ablation system

    DOE Patents [OSTI]

    Harley, Gabriel; Pass, Thomas; Cousins, Peter John; Viatella, John

    2014-10-14T23:59:59.000Z

    A solar cell is formed using a solar cell ablation system. The ablation system includes a single laser source and several laser scanners. The laser scanners include a master laser scanner, with the rest of the laser scanners being slaved to the master laser scanner. A laser beam from the laser source is split into several laser beams, with the laser beams being scanned onto corresponding wafers using the laser scanners in accordance with one or more patterns. The laser beams may be scanned on the wafers using the same or different power levels of the laser source.

  14. Solar cell contact formation using laser ablation

    DOE Patents [OSTI]

    Harley, Gabriel; Smith, David; Cousins, Peter

    2012-12-04T23:59:59.000Z

    The formation of solar cell contacts using a laser is described. A method of fabricating a back-contact solar cell includes forming a poly-crystalline material layer above a single-crystalline substrate. The method also includes forming a dielectric material stack above the poly-crystalline material layer. The method also includes forming, by laser ablation, a plurality of contacts holes in the dielectric material stack, each of the contact holes exposing a portion of the poly-crystalline material layer; and forming conductive contacts in the plurality of contact holes.

  15. November 21, 2000 PV Lesson Plan 1 Solar Cells

    E-Print Network [OSTI]

    Oregon, University of

    November 21, 2000 PV Lesson Plan 1 ­ Solar Cells Prepared for the Oregon Million Solar Roofs Coalition By Frank Vignola ­ University of Oregon Solar Radiation Monitoring Lab John Hocken ­ South Eugene High School Gary Grace ­ South Eugene High School In Schools #12;1 Solar Cells Lesson Plan Content

  16. Electrical overstress failure in silicon solar cells

    SciTech Connect (OSTI)

    Pease, R.L.; Barnum, J.R.; van Lint, V.A.J.; Vulliet, W.V.; Wrobel, T.F.

    1982-11-01T23:59:59.000Z

    A solar-cell electrical-overstress-failure model and the results of experimental measurements of threshold pulsed failure currents on four types of silicon solar cells are presented. The transient EMP field surrounding a lightning stroke has been identified as a potential threat to a photovoltaic array, yet failure analysis of solar cells in a pulsed environment had not previously been reported. Failure in the low-resistivity concentrator cells at pulse widths between 1 ..mu..s and 1 ms occurred initially in the junction. Finger damage in the form of silver melting occurs at currents only slightly greater than that required for junction damage. The result of reverse-bias transient-overstress tests on high-resistivity (10 ..cap omega..cm) cells demonstrated that the predominant failure mode was due to edge currents. These flat-plate cells failed at currents of only 4 to 20 A, which is one or two orders of magnitude below the model predictions. It thus appears that high-resistivity flat-plate cells are quite vulnerable to electrical overstress which could be produced by a variety of mechanisms.

  17. N-Alkyl-polyethylenimine 2 kDastabilized superparamagnetic iron oxide nanoparticles for MRI cell tracking

    E-Print Network [OSTI]

    Levin, Judith G.

    nanoparticles need to be coated with organic polymers or other materials for efficient cell labeling. This surface coating increases the stability of SPIO nanoparticles and allows further chemical modificationsN-Alkyl-polyethylenimine 2 kDa­stabilized superparamagnetic iron oxide nanoparticles for MRI cell

  18. The impact of nanoparticle ligand density on dendritic-cell targeted vaccines Arunima Bandyopadhyaya

    E-Print Network [OSTI]

    Fahmy, Tarek

    function and subsequent T cell response. We modi ed the surface of biodegradable nanoparticles loaded and nanoparticles composed of biodegradable and bio- compatible poly (lactide-co-glycolic acid) (PLGA) polymersThe impact of nanoparticle ligand density on dendritic-cell targeted vaccines Arunima

  19. Photovoltaic nanocrystal scintillators hybridized on Si solar cells

    E-Print Network [OSTI]

    Demir, Hilmi Volkan

    Photovoltaic nanocrystal scintillators hybridized on Si solar cells for enhanced conversion@bilkent.edu.tr Abstract: We propose and demonstrate semiconductor nanocrystal based photovoltaic scintillators integrated on solar cells to enhance photovoltaic device parameters including spectral responsivity, open circuit

  20. Solar cell efficiency enhancement via light trapping in printable resonant

    E-Print Network [OSTI]

    Atwater, Harry

    Solar cell efficiency enhancement via light trapping in printable resonant dielectric nanosphere´de´rale de Lausanne (EPFL), Institute of Microengineering (IMT), Photovoltaics and Thin Film Electronics, photovoltaics, resonant dielectric structures, solar cells * Corresponding author: e-mail jgrandid

  1. Minding the Gap Makes for More Efficient Solar Cells

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Minding the Gap Makes for More Efficient Solar Cells Minding the Gap Makes for More Efficient Solar Cells Print Thursday, 19 December 2013 11:01 Using novel materials to develop...

  2. High temperature investigations of crystalline silicon solar cell materials

    E-Print Network [OSTI]

    Hudelson, George David Stephen, III

    2009-01-01T23:59:59.000Z

    Crystalline silicon solar cells are a promising candidate to provide a sustainable, clean energy source for the future. In order to bring about widespread adoption of solar cells, much work is needed to reduce their cost. ...

  3. Investigation of the Role of Trap States in Solar Cell Reliability using Photothermal Deflection Spectroscopy

    E-Print Network [OSTI]

    Bezryadina, Anna Sergeyevna

    2012-01-01T23:59:59.000Z

    dye-sensitized solar cells, solar inks using conventionalof degradation of solar cells, since a material structure,higher effect on the solar cell’s stability and performance.

  4. Method of fabricating a solar cell

    DOE Patents [OSTI]

    Pass, Thomas; Rogers, Robert

    2014-02-25T23:59:59.000Z

    Methods of fabricating solar cells are described. A porous layer may be formed on a surface of a substrate, the porous layer including a plurality of particles and a plurality of voids. A solution may be dispensed into one or more regions of the porous layer to provide a patterned composite layer. The substrate may then be heated.

  5. Metal electrode for amorphous silicon solar cells

    DOE Patents [OSTI]

    Williams, Richard (Princeton, NJ)

    1983-01-01T23:59:59.000Z

    An amorphous silicon solar cell having an N-type region wherein the contact to the N-type region is composed of a material having a work function of about 3.7 electron volts or less. Suitable materials include strontium, barium and magnesium and rare earth metals such as gadolinium and yttrium.

  6. Plastic Schottky barrier solar cells

    DOE Patents [OSTI]

    Waldrop, James R. (Thousand Oaks, CA); Cohen, Marshall J. (Thousand Oaks, CA)

    1984-01-24T23:59:59.000Z

    A photovoltaic cell structure is fabricated from an active medium including an undoped, intrinsically p-type organic semiconductor comprising polyacetylene. When a film of such material is in rectifying contact with a magnesium electrode, a Schottky-barrier junction is obtained within the body of the cell structure. Also, a gold overlayer passivates the magnesium layer on the undoped polyacetylene film.

  7. Minireview: A Tiny Touch: Activation of Cell Signaling Pathways with Magnetic Nanoparticles

    E-Print Network [OSTI]

    Sniadecki, Nathan J.

    98195 Magnetic nanoparticles can be coated with specific ligands that enable them to bind to receptorsMinireview: A Tiny Touch: Activation of Cell Signaling Pathways with Magnetic Nanoparticles Nathan

  8. Assessing Possibilities & Limits for Solar Cells

    E-Print Network [OSTI]

    Nayak, Pabitra K; Cahen, David

    2011-01-01T23:59:59.000Z

    What are the solar cell efficiencies that we can strive towards? We show here that several simple criteria, based on cell and module performance data, serve to evaluate and compare all types of today's solar cells. Analyzing these data allows to gauge in how far significant progress can be expected for the various cell types and, most importantly from both the science and technology points of view, if basic bounds, beyond those known today, may exist, that can limit such progress. This is important, because half a century after Shockley and Queisser (SQ) presented limits, based on detailed balance calculations for single absorber solar cells, those are still held to be the only ones, we need to consider; most efforts to go beyond SQ are directed towards attempts to circumvent them, primarily via smart optics, or optoelectronics. After formulating the criteria and analyzing known loss mechanisms, use of such criteria suggests - additional limits for newer types of cells, Organic and Dye-Sensitized ones, and th...

  9. Solar Cells in 2009 and Beyond Mike McGehee

    E-Print Network [OSTI]

    McGehee, Michael

    ;Inorganic Thin Film Solar Cells CdTe CIGS (CuInGaSe2) amorphous Si · A thin film of semiconductorSolar Cells in 2009 and Beyond Mike McGehee Materials Science and Engineering These slides parity cost depends on location #12;Conventional p-n junction photovoltaic (solar) cell #12;Efficiency

  10. Flexible thermal cycle test equipment for concentrator solar cells

    DOE Patents [OSTI]

    Hebert, Peter H. (Glendale, CA); Brandt, Randolph J. (Palmdale, CA)

    2012-06-19T23:59:59.000Z

    A system and method for performing thermal stress testing of photovoltaic solar cells is presented. The system and method allows rapid testing of photovoltaic solar cells under controllable thermal conditions. The system and method presents a means of rapidly applying thermal stresses to one or more photovoltaic solar cells in a consistent and repeatable manner.

  11. 50% EFFICIENT SOLAR CELL ARCHITECTURES AND DESIGNS Allen Barnett1

    E-Print Network [OSTI]

    Honsberg, Christiana

    paths to low cost. Our central innovation is to co-design the optical, interconnect and solar cell cost drivers through novel solar cell architectures and optical elements. LOW CONCENTRATION50% EFFICIENT SOLAR CELL ARCHITECTURES AND DESIGNS Allen Barnett1 , Christiana Honsberg1 , Douglas

  12. MILESTONES TOWARD 50% EFFICIENT SOLAR CELL MODULES Allen Barnett1

    E-Print Network [OSTI]

    Honsberg, Christiana

    and a new silicon solar cell for the mid-energy photons, all while circumventing existing cost driversMILESTONES TOWARD 50% EFFICIENT SOLAR CELL MODULES Allen Barnett1 , Douglas Kirkpatrick2 LightSpin Technologies ABSTRACT: The Very High Efficiency Solar Cell (VHESC) program is developing

  13. EE Times: Semi News Groups claim breakthroughs in solar cells

    E-Print Network [OSTI]

    Rogers, John A.

    -based, multi-junction solar cells. Module cost is minimized by using high concentration ratio. XEE Times: Semi News Groups claim breakthroughs in solar cells Mark LaPedus Page 1 of 2 EE Times (05 separately claimed breakthroughs in solar cell production. Gallium arsenide (GaAs) and related compounds

  14. Hybrid Silicon Nanocone-Polymer Solar Cells Sangmoo Jeong,

    E-Print Network [OSTI]

    Cui, Yi

    ABSTRACT: Recently, hybrid Si/organic solar cells have been studied for low-cost Si photovoltaic devices solar cell. Additionally, about 26% of the module cost comes from the fabrication processes of a SiHybrid Silicon Nanocone-Polymer Solar Cells Sangmoo Jeong, Erik C. Garnett, Shuang Wang, Zongfu Yu

  15. Simulations of solar cell absorption enhancement using resonant modes

    E-Print Network [OSTI]

    Grandidier, Jonathan

    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

  16. MORPHOLOGY DEPENDENT SHORT CIRCUIT CURRENT IN BULK HETEROJUNCTION SOLAR CELL

    E-Print Network [OSTI]

    Alam, Muhammad A.

    MORPHOLOGY DEPENDENT SHORT CIRCUIT CURRENT IN BULK HETEROJUNCTION SOLAR CELL Biswajit Ray, Pradeep, West Lafayette, Indiana, USA ABSTRACT Polymer based bulk heterostructure (BH) solar cell offers a relatively inexpensive option for the future solar cell technology, provided its efficiency increases beyond

  17. EELE408 Photovoltaics Lecture 13: Solar Cell Design I

    E-Print Network [OSTI]

    Kaiser, Todd J.

    1 EELE408 Photovoltaics Lecture 13: Solar Cell Design I Dr. Todd J. Kaiser tjkaiser@ece.montana.edu Department of Electrical and Computer Engineering Montana State University - Bozeman Solar Cell Design · Specify the parameters of solar cell structure in order to maximize efficiency given a set of constraints

  18. EELE408 Photovoltaics Lecture 10 Solar Cell Operation

    E-Print Network [OSTI]

    Kaiser, Todd J.

    1 EELE408 Photovoltaics Lecture 10 Solar Cell Operation Dr. Todd J. Kaiser tjkaiser@ece.montana.edu Department of Electrical and Computer Engineering Montana State University - Bozeman P-N Junction Solar CellVbi Charge Density Electrostatic Potential Vbi Solar Cell Operation n Emitter p Base Rear Contact

  19. ZnO Nanotube Based Dye-Sensitized Solar Cells

    E-Print Network [OSTI]

    ZnO Nanotube Based Dye-Sensitized Solar Cells Alex B. F. Martinson,, Jeffrey W. Elam, Joseph T templated by anodic aluminum oxide for use in dye-sensitized solar cells (DSSCs). Atomic layer deposition of the best dye- sensitized solar cells (DSSCs) is the product of a dye with moderate extinction

  20. Plasmonic Nanostructure Design for Efficient Light Coupling into Solar Cells

    E-Print Network [OSTI]

    Atwater, Harry

    Plasmonic Nanostructure Design for Efficient Light Coupling into Solar Cells Vivian E. Ferry, Luke sunlight into guided modes in thin film Si and GaAs plasmonic solar cells whose back interface is coated. These findings show promise for the design of ultrathin solar cells that exhibit enhanced absorption

  1. Dielectric nanostructures for broadband light trapping in organic solar cells

    E-Print Network [OSTI]

    Fan, Shanhui

    Dielectric nanostructures for broadband light trapping in organic solar cells Aaswath Raman, Zongfu@stanford.edu Abstract: Organic bulk heterojunction solar cells are a promising candidate for low-cost next lying on top of the organic solar cell stack produce a 8-15% increase in photocurrent for a model

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

    E-Print Network [OSTI]

    Mariani, Giacomo

    2013-01-01T23:59:59.000Z

    plasmon-enhanced dye- sensitized solar cells through metalnanostructure- based or dye-sensitized solar cells represent

  3. Method of fabricating a solar cell with a tunnel dielectric layer

    DOE Patents [OSTI]

    Dennis, Tim; Harrington, Scott; Manning, Jane; Smith, David; Waldhauer, Ann

    2012-12-18T23:59:59.000Z

    Methods of fabricating solar cells with tunnel dielectric layers are described. Solar cells with tunnel dielectric layers are also described.

  4. Method of fabricating a solar cell with a tunnel dielectric layer

    DOE Patents [OSTI]

    Dennis, Tim; Harrington, Scott; Manning, Jane; Smith, David D; Waldhauer, Ann

    2014-04-29T23:59:59.000Z

    Methods of fabricating solar cells with tunnel dielectric layers are described. Solar cells with tunnel dielectric layers are also described.

  5. Laser Assisted Nanomanufacturing with Solution Processed Nanoparticles for Low-cost Electronics and Photovoltaics

    E-Print Network [OSTI]

    Pan, Heng

    2009-01-01T23:59:59.000Z

    Fig. 1. 1 Flexible electronics and flexible solar cells. Inof metal oxide based electronics on heat sensitive flexibleNanoparticles for Low-cost Electronics and Photovoltaics by

  6. High-Yield Solvothermal Synthesis of Magnetic Peapod Nanocomposites via the Capture of Preformed Nanoparticles in

    E-Print Network [OSTI]

    Spinu, Leonard

    , nanocomposite, solvothermal synthesis, nanoparticle encapsulation, layered inorganic nanostructures, intercalation, ion exchange, photodegradation, hydro- gen storage, gas sensors, and solar energy conversion.7 and optical devices,9 fuel cells,10 sensors,11 templates for nanoparticle assembly,12 and photonics.13 Various

  7. Solar Cell Simulation | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn'tOriginEducationVideo »UsageSecretary ofSmallConfidential,2 Solar Background Document 2Solar Cell

  8. Deng & Schiff, Amorphous Silicon Based Solar Cells rev. 7/30/2002, Page 1 Amorphous Silicon Based Solar Cells

    E-Print Network [OSTI]

    Deng, Xunming

    Deng & Schiff, Amorphous Silicon Based Solar Cells rev. 7/30/2002, Page 1 Amorphous Silicon Based Solar Cells Xunming Deng and Eric A. Schiff Table of Contents 1 Overview 3 1.1 Amorphous Silicon: The First Bipolar Amorphous Semiconductor 3 1.2 Designs for Amorphous Silicon Solar Cells: A Guided Tour 6

  9. Highly efficient light management for perovskite solar cells

    E-Print Network [OSTI]

    Wang, Dong-Lin; Hou, Guo-Jiao; Zhu, Zhen-Gang; Yan, Qing-Bo; Su, Gang

    2015-01-01T23:59:59.000Z

    Organic-inorganic halide perovskite solar cells have enormous potential to impact the existing photovoltaic industry. As realizing a higher conversion efficiency of the solar cell is still the most crucial task, a great number of schemes were proposed to minimize the carrier loss by optimizing the electrical properties of the perovskite solar cells. Here, we focus on another significant aspect that is to minimize the light loss by optimizing the light management to gain a high efficiency for perovskite solar cells. In our scheme, the slotted and inverted prism structured SiO2 layers are adopted to trap more light into the solar cells, and a better transparent conducting oxide layer is employed to reduce the parasitic absorption. For such an implementation, the efficiency and the serviceable angle of the perovskite solar cell can be promoted impressively. This proposal would shed new light on developing the high-performance perovskite solar cells.

  10. Absence of Structural Impact of Noble Nanoparticles on P3HT: PCBM Blends for Plasmon Enhanced Bulk-Heterojunction Organic Solar Cells Probed by Synchrotron Grazing Incidence X-Ray Diffraction

    E-Print Network [OSTI]

    Samuele Lilliu; Mejd Alsari; Oier Bikondoa; J. Emyr Macdonald; Marcus S. Dahlem

    2014-10-18T23:59:59.000Z

    The incorporation of noble metal nanoparticles, displaying localized surface plasmon resonance, in the active area of donor-acceptor bulk-heterojunction organic photovoltaic devices is an industrially compatible light trapping strategy, able to guarantee better absorption of the incident photons and give an efficiency improvement between 12% and 38%. In the present work, we investigate the effect of Au and Ag nanoparticles blended with P3HT: PCBM on the P3HT crystallization dynamics by synchrotron grazing incidence X-ray diffraction. We conclude that the presence of (1) 80nm Au, (2) mix of 5nm, 50nm, 80nm Au, (3) 40nm Ag, and (4) 10nm, 40nm, 60nm Ag colloidal nanoparticles, at different concentrations below 0.3 wt% in P3HT: PCBM blends, does not affect the behaviour of the blends themselves.

  11. ELEG620: Solar Electric Systems University of Delaware, ECE Spring 2008 C. Honsberg Solar Cell Operation

    E-Print Network [OSTI]

    Honsberg, Christiana

    is lost as heat. energy Eg 2 31 Absorption process #12;ELEG620: Solar Electric Systems UniversityELEG620: Solar Electric Systems University of Delaware, ECE Spring 2008 C. Honsberg Solar Cell and shunt resistance). #12;ELEG620: Solar Electric Systems University of Delaware, ECE Spring 2008 C

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

    E-Print Network [OSTI]

    Huang, Jianqiao

    2012-01-01T23:59:59.000Z

    Solar Energy Materials and Solar Cells, 86:207–216, 2005. [silicon thin films and solar cells. Journal of Appliedof a p-i-n thin-film solar cell with front transparent con-

  13. Compensated amorphous-silicon solar cell

    DOE Patents [OSTI]

    Devaud, G.

    1982-06-21T23:59:59.000Z

    An amorphous silicon solar cell including an electrically conductive substrate, a layer of glow discharge deposited hydrogenated amorphous silicon having regions of differing conductivity with at least one region of intrinsic hydrogenated amorphous silicon. The layer of hydrogenated amorphous silicon has opposed first and second major surfaces where the first major surface contacts the elecrically conductive substrate and an electrode for electrically contacting the second major surface. The intrinsic hydrogenated amorphous silicon region is deposited in a glow discharge with an atmosphere which includes not less than about 0.02 atom percent mono-atomic boron. An improved N.I.P. solar cell is disclosed using a BF/sub 3/ doped intrinsic layer.

  14. Green Solar In 2009 researchers at Berkeley helped shift research into new solar cell materials by

    E-Print Network [OSTI]

    Iglesia, Enrique

    ­2077). Given the proposed scales of PV adoption, the health and environmental impacts of PV technology shouldGreen Solar In 2009 researchers at Berkeley helped shift research into new solar cell materials also be considered. This project would examine the proposed solar cell materials and designs and create

  15. The effect of silica nanoparticle-modified surfaces on cell morphology, cytoskeletal organization and function

    E-Print Network [OSTI]

    substrates were coated with monodispersed silica nanoparticles of 50, 100 and 300 nm in diameter. The impactThe effect of silica nanoparticle-modified surfaces on cell morphology, cytoskeletal organization investigate the effect of nanoparticle (NP) assemblies arranged on a flat substrate on cytoskeletal

  16. Microfluidic System for Facilitated Quantification of Nanoparticle Accumulation to Cells Under Laminar Flow

    E-Print Network [OSTI]

    Simon, Scott I.

    Microfluidic System for Facilitated Quantification of Nanoparticle Accumulation to Cells Under to endothelial receptors has led to the rapid devel- opment of targeted nanoparticles for drug, gene and imaging nanoparticle accumulation under phys- iologically-relevant laminar flow. We designed reversibly vacuum

  17. US polycrystalline thin film solar cells program

    SciTech Connect (OSTI)

    Ullal, H.S.; Zweibel, K.; Mitchell, R.L. (Solar Energy Research Inst., Golden, CO (USA)) [Solar Energy Research Inst., Golden, CO (USA)

    1989-11-01T23:59:59.000Z

    The Polycrystalline Thin Film Solar Cells Program, part of the United States National Photovoltaic Program, performs R D on copper indium diselenide and cadmium telluride thin films. The objective of the Program is to support research to develop cells and modules that meet the US Department of Energy's long-term goals by achieving high efficiencies (15%-20%), low-cost ($50/m{sup 2}), and long-time reliability (30 years). The importance of work in this area is due to the fact that the polycrystalline thin-film CuInSe{sub 2} and CdTe solar cells and modules have made rapid advances. They have become the leading thin films for PV in terms of efficiency and stability. The US Department of Energy has increased its funding through an initiative through the Solar Energy Research Institute in CuInSe{sub 2} and CdTe with subcontracts to start in Spring 1990. 23 refs., 5 figs.

  18. Solar Energy Materials & Solar Cells 71 (2002) 511522 In situ Raman spectroscopy of the

    E-Print Network [OSTI]

    Nabben, Reinhard

    Solar Energy Materials & Solar Cells 71 (2002) 511­522 In situ Raman spectroscopy. In this situation, a low energy excitation (e.g. visible light) is needed to excite an electron to a neighboring

  19. Optimized Designs and Materials for Nanostructure Based Solar Cells

    E-Print Network [OSTI]

    Shao, Qinghui

    2009-01-01T23:59:59.000Z

    efficiency of solar panels and power to weight ratio insolar cells, there exist two basic processes to convert sunlight power topower to a load connected when charged by Sun. The typical output voltage of a silicon based solar

  20. Evaluation of concentration solar cells for terrestrial applications

    E-Print Network [OSTI]

    An, Tao, M. Eng. Massachusetts Institute of Technology

    2008-01-01T23:59:59.000Z

    Solar energy has become a hot prospect for the future replacement of fossil fuels, which have limited reserves and cause environmental problems. Solar cell is such a device to directly generate electricity from this clean ...

  1. OPVs and Solar Cells: The Basics | University of Texas Energy...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    OPVs AND SOLAR CELLS: THE BASICS Harvesting solar energy is a key endeavor for this century as we face ever-decreasing fossil fuel world reserves and ever-increasing environmental...

  2. ORNL researchers make strides toward a copper oxide solar cell...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    researchers make strides toward a copper oxide solar cell (hi-res image) Amit Goyal and his team of research scientists are using copper oxide to redesign the face of solar power....

  3. Solar module having reflector between cells

    DOE Patents [OSTI]

    Kardauskas, Michael J. (Billerica, MA)

    1999-01-01T23:59:59.000Z

    A photovoltaic module comprising an array of electrically interconnected photovoltaic cells disposed in a planar and mutually spaced relationship between a light-transparent front cover member in sheet form and a back sheet structure is provided with a novel light-reflecting means disposed between adjacent cells for reflecting light falling in the areas between cells back toward said transparent cover member for further internal reflection onto the solar cells. The light-reflecting comprises a flexible plastic film that has been embossed so as to have a plurality of small V-shaped grooves in its front surface, and a thin light-reflecting coating on said front surface, the portions of said coating along the sides of said grooves forming light-reflecting facets, said grooves being formed so that said facets will reflect light impinging thereon back into said transparent cover sheet with an angle of incidence greater than the critical angle, whereby substantially all of the reflected light will be internally reflected from said cover sheet back to said solar modules, thereby increasing the current output of the module.

  4. TRANSPARENT COATINGS FOR SOLAR CELLS RESEARCH

    SciTech Connect (OSTI)

    Glatkowski, P.J.; Landis, D.A.

    2013-04-16T23:59:59.000Z

    Todays solar cells are fabricated using metal oxide based transparent conductive coatings (TCC) or metal wires with optoelectronic performance exceeding that currently possible with Carbon Nanotube (CNT) based TCCs. The motivation for replacing current TCC is their inherent brittleness, high deposition cost, and high deposition temperatures; leading to reduced performance on thin substrates. With improved processing, application and characterization techniques Nanofiber and/or CNT based TCCs can overcome these shortcomings while offering the ability to be applied in atmospheric conditions using low cost coating processes At todays level of development, CNT based TCC are nearing commercial use in touch screens, some types of information displays (i.e. electronic paper), and certain military applications. However, the resistivity and transparency requirements for use in current commercial solar cells are more stringent than in many of these applications. Therefore, significant research on fundamental nanotube composition, dispersion and deposition are required to reach the required performance commanded by photovoltaic devices. The objective of this project was to research and develop transparent conductive coatings based on novel nanomaterial composite coatings, which comprise nanotubes, nanofibers, and other nanostructured materials along with binder materials. One objective was to show that these new nanomaterials perform at an electrical resistivity and optical transparency suitable for use in solar cells and other energy-related applications. A second objective was to generate new structures and chemistries with improved resistivity and transparency performance. The materials also included the binders and surface treatments that facilitate the utility of the electrically conductive portion of these composites in solar photovoltaic devices. Performance enhancement venues included: CNT purification and metallic tube separation techniques, chemical doping, CNT patterning and alignment, advances in commercial and research materials and field effect schemes. In addition, Eikos continued to develop improved efficiency coating materials and transfer methods suitable for batch and continuous roll-to-roll fabrication requirements. Finally, Eikos collaborated with NREL and the PV-community at large in fabricating and characterizing Invisicon���® enabled solar cells.

  5. Valuing the Time-Varying Electricity Production of Solar Photovoltaic Cells

    E-Print Network [OSTI]

    Borenstein, Severin

    2005-01-01T23:59:59.000Z

    Production of Solar Photovoltaic Cells Severin BorensteinProduction of Solar Photovoltaic Cells Severin Borenstein 1concerns is so- lar photovoltaic cells (PVs), which capture

  6. Photonic Design: From Fundamental Solar Cell Physics to Computational Inverse Design

    E-Print Network [OSTI]

    Miller, Owen Dennis

    2012-01-01T23:59:59.000Z

    Surface Textures for Sub-Wavelength Solar Cells 7.1 Problemhigh-efficiency III-V cells,” Solar Cells, vol. 30, pp. 337–Limit 4 Analysis of next-generation solar cells 4.1 Carrier

  7. Investigation of the Role of Trap States in Solar Cell Reliability using Photothermal Deflection Spectroscopy

    E-Print Network [OSTI]

    Bezryadina, Anna Sergeyevna

    2012-01-01T23:59:59.000Z

    of degradation of solar cells, since a material structure,higher effect on the solar cell’s stability and performance.en.wikipedia.org/wiki/Solar_cell_efficiency, accessed 10) J.

  8. Solare Cell Roof Tile And Method Of Forming Same

    DOE Patents [OSTI]

    Hanoka, Jack I. (Brookline, MA); Real, Markus (Oberberg, CH)

    1999-11-16T23:59:59.000Z

    A solar cell roof tile includes a front support layer, a transparent encapsulant layer, a plurality of interconnected solar cells and a backskin layer. The front support layer is formed of light transmitting material and has first and second surfaces. The transparent encapsulant layer is disposed adjacent the second surface of the front support layer. The interconnected solar cells has a first surface disposed adjacent the transparent encapsulant layer. The backskin layer has a first surface disposed adjacent a second surface of the interconnected solar cells, wherein a portion of the backskin layer wraps around and contacts the first surface of the front support layer to form the border region. A portion of the border region has an extended width. The solar cell roof tile may have stand-offs disposed on the extended width border region for providing vertical spacing with respect to an adjacent solar cell roof tile.

  9. Solar Cells DOI: 10.1002/ange.201203330

    E-Print Network [OSTI]

    Hone, James

    of Science, Office of Basic Energy Sciences under award number DE-SC0001085) and the FENA (Grant 2009-NTSolar Cells DOI: 10.1002/ange.201203330 A Supramolecular Complex in Small-Molecule Solar Cells solution can create the active layer in solar cells. We found that there is self-organization between

  10. Boosting Accuracy of Testing Multijunction Solar Cells (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2015-01-01T23:59:59.000Z

    This NREL Highlight describes research into a more precise technology for measuring efficiency of concentrating solar cells, which will enable the industry to advance.

  11. Simple Method Quantifies Recombination Pathways in Solar Cells (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2013-09-01T23:59:59.000Z

    NREL's analytic equation uses open-circuit voltage data to determine how much recombination occurs via different channels in a solar cell.

  12. Sandia National Laboratories: control key solar cell material...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    with metal-organic framework (MOF) materials by combining them with dye-sensitized solar cells (DSSCs). ... Last Updated: December 4, 2014 Go To Top Exceptional service...

  13. Sandia National Laboratories: control key solar cell interfaces

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    with metal-organic framework (MOF) materials by combining them with dye-sensitized solar cells (DSSCs). ... Last Updated: December 4, 2014 Go To Top Exceptional service...

  14. Controlled Structure of Organic-Nanomaterial Solar Cells - Energy...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Controlled Structure of Organic-Nanomaterial Solar Cells Lawrence Berkeley National Laboratory Contact LBL About This Technology Technology Marketing SummaryOrganic, polymer-based...

  15. amorphous solar cell: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    The convergence Schiff, Eric A. 20 Fully Solution-Processed Copper Chalcopyrite Thin Film Solar Cells: Materials Chemistry, Processing, and Device Physics University of...

  16. arsenide solar cells: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Pankaj J Edla; Dr. Bhupendra Gupta 92 Fully Solution-Processed Copper Chalcopyrite Thin Film Solar Cells: Materials Chemistry, Processing, and Device Physics University of...

  17. alingap solar cell: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Pankaj J Edla; Dr. Bhupendra Gupta 84 Fully Solution-Processed Copper Chalcopyrite Thin Film Solar Cells: Materials Chemistry, Processing, and Device Physics University of...

  18. automated solar cell: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Pankaj J Edla; Dr. Bhupendra Gupta 103 Fully Solution-Processed Copper Chalcopyrite Thin Film Solar Cells: Materials Chemistry, Processing, and Device Physics University of...

  19. arsenide solar cell: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Pankaj J Edla; Dr. Bhupendra Gupta 92 Fully Solution-Processed Copper Chalcopyrite Thin Film Solar Cells: Materials Chemistry, Processing, and Device Physics University of...

  20. alloy solar cells: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Pankaj J Edla; Dr. Bhupendra Gupta 91 Fully Solution-Processed Copper Chalcopyrite Thin Film Solar Cells: Materials Chemistry, Processing, and Device Physics University of...

  1. Method of fabricating bifacial tandem solar cells

    DOE Patents [OSTI]

    Wojtczuk, Steven J; Chiu, Philip T; Zhang, Xuebing; Gagnon, Edward; Timmons, Michael

    2014-10-07T23:59:59.000Z

    A method of fabricating on a semiconductor substrate bifacial tandem solar cells with semiconductor subcells having a lower bandgap than the substrate bandgap on one side of the substrate and with subcells having a higher bandgap than the substrate on the other including, first, growing a lower bandgap subcell on one substrate side that uses only the same periodic table group V material in the dislocation-reducing grading layers and bottom subcells as is present in the substrate and after the initial growth is complete and then flipping the substrate and growing the higher bandgap subcells on the opposite substrate side which can be of different group V material.

  2. Solar Energy Materials & Solar Cells 77 (2003) 319330 Structure and photoelectrochemical properties

    E-Print Network [OSTI]

    Huang, Yanyi

    Solar Energy Materials & Solar Cells 77 (2003) 319­330 Letters Structure and photoelectrochemical a promis- ing strategy for solar energy conversion, with energy conversion efficiency as high monochromatic photon to current conversion efficiency, overall energy conversion yield (Z) and transient

  3. An Overview of Solar Cell Technology Mike McGehee

    E-Print Network [OSTI]

    McGehee, Michael

    An Overview of Solar Cell Technology Mike McGehee Materials Science and Engineering Global ClimateWatt and Evergreen Solar went bankrupt Jon Stewart, The Daily Show Solyndra, SpectraWatt and Evergreen Solar went provide 20 % of that. It takes a panel rated at 5 W, to average 1 W of power through the day and year, sog

  4. Efficiency limits of quantum well solar cells

    E-Print Network [OSTI]

    Connolly, J P; Barnham, K W J; Bushnell, D B; Tibbits, T N D; Roberts, J S

    2010-01-01T23:59:59.000Z

    The quantum well solar cell (QWSC) has been proposed as a flexible means to ensuring current matching for tandem cells. This paper explores the further advantage afforded by the indication that QWSCs operate in the radiative limit because radiative contribution to the dark current is seen to dominate in experimental data at biases corresponding to operation under concentration. The dark currents of QWSCs are analysed in terms of a light and dark current model. The model calculates the spectral response (QE) from field bearing regions and charge neutral layers and from the quantum wells by calculating the confined densities of states and absorption coefficient, and solving transport equations analytically. The total dark current is expressed as the sum of depletion layer and charge neutral radiative and non radiative currents consistent with parameter values extracted from QE fits to data. The depletion layer dark current is a sum of Shockley-Read-Hall non radiative, and radiative contributions. The charge neu...

  5. Reducing the Cost of Solar Cells

    SciTech Connect (OSTI)

    Scanlon, B.

    2012-04-01T23:59:59.000Z

    Solar-powered electricity prices could soon approach those of power from coal or natural gas thanks to collaborative research with solar startup Ampulse Corporation at the National Renewable Energy Laboratory. Silicon wafers account for almost half the cost of today's solar photovoltaic panels, so reducing or eliminating wafer costs is essential to bringing prices down. Current crystalline silicon technology converts energy in a highly efficient manner; however, that technology is manufactured with processes that could stand some improvement. The industry needs a method that is less complex, creates less waste and uses less energy. First, half the refined silicon is lost as dust in the wafer-sawing process, driving module costs higher. Wafers are sawn off of large cylindrical ingots, or boules, of silicon. A typical 2-meter boule loses as many as 6,000 potential wafers during sawing. Second, the wafers produced are much thicker than necessary. To efficiently convert sunlight into electricity, the wafers need be only one-tenth the typical thickness. NREL, the Oak Ridge National Laboratory and Ampulse have partnered on an approach to eliminate this waste and dramatically lower the cost of the finished solar panels. By using a chemical vapor deposition process to grow the silicon on inexpensive foil, Ampulse is able to make the solar cells just thick enough to convert most of the solar energy into electricity. No more sawdust - and no more wasting refined silicon materials. NREL developed the technology to grow high-quality silicon and ORNL developed the metal foil that has the correct crystal structure to support that growth. Ampulse is installing a pilot manufacturing line in NREL's Process Development Integration Laboratory, where solar companies can work closely with lab scientists on integrated equipment to answer pressing questions related to their technology development, as well as rapidly overcoming R and D challenges and risk. NREL's program is focused on transformative innovation in the domestic PV industry. With knowledge and expertise acquired from the PDIL pilot production line tools, Ampulse plans to design a full-scale production line to accommodate long rolls of metal foil. The Ampulse process 'goes straight from pure silicon-containing gas to high-quality crystal silicon film,' said Brent Nelson, the operational manager for the Process Development Integration Laboratory. 'The advantage is you can make the wafer just as thin as you need it - 10 microns or less.' Most of today's solar cells are made out of wafer crystalline silicon, though thin-film cells made of more exotic elements such as copper, indium, gallium, arsenic, cadmium, tellurium and others are making a strong push into the market. The advantage of silicon is its abundance, because it is derived from sand. Silicon's disadvantage is that purifying it into wafers suitable for solar cells can be expensive and energy intensive. Manufacturers add carbon and heat to sand to produce metallurgical-grade silicon, which is useful in other industries, but not yet suitable for making solar cells. So this metallurgical-grade silicon is then converted to pure trichlorosilane (SiCl3) or silane (SiH4) gas. Typically, the purified gas is then converted to create a silicon feedstock at 1,000 degrees Celsius. This feedstock is melted at 1,414 C and recrystallized into crystal ingots that are finally sawed into wafers. The Ampulse method differs in that it eliminates the last two steps in the traditional process and works directly with the silane gas growing only the needed silicon right onto a foil substrate. A team of NREL scientists had developed a way to use a process called hot-wire chemical vapor deposition to thicken silicon wafers with near perfect crystal structure. Using a hot tungsten filament much like the one found in an incandescent light bulb, the silane gas molecules are broken apart and deposited onto the wafer using the chemical vapor deposition technique at about 700 C - a much lower temperature than needed to make the wafer. The hot filament dec

  6. Laser beam apparatus and method for analyzing solar cells

    DOE Patents [OSTI]

    Staebler, David L. (Lawrenceville, NJ)

    1980-01-01T23:59:59.000Z

    A laser beam apparatus and method for analyzing, inter alia, the current versus voltage curve at the point of illumination on a solar cell and the open circuit voltage of a solar cell. The apparatus incorporates a lock-in amplifier, and a laser beam light chopper which permits the measurement of the AC current of the solar cell at an applied DC voltage at the position on the solar cell where the cell is illuminated and a feedback scheme which permits the direct scanning measurements of the open circuit voltage. The accuracy of the measurement is a function of the intensity and wavelength of the laser light with respect to the intensity and wavelength distribution of sunlight and the percentage the dark current is at the open circuit voltage to the short circuit current of the solar cell.

  7. Design guidelines for efficient plasmonic solar cells exploiting the trade-off between scattering and metallic absorption

    E-Print Network [OSTI]

    Li, Xiaofeng; Giannini, Vincenzo; Ekins-Daukes, Ned J; Maier, Stefan A

    2014-01-01T23:59:59.000Z

    We report on the role of plasmonic resonances in determining the delicate balance between scattering and absorption of light in nanometric particle arrays applied to the front surface of solar cells. Strong parasitic absorption is shown to be dependent upon the excitation of localized surface plasmon resonances and prohibits efficient scattering into the underlying semiconductor. Via detailed analytical and numerical investigations we obtain the dependence of scattering and absorption in nanoparticles upon their complex refractive index. These results provide an insight into the optimum material properties required to minimize parasitic optical absorption, while maintaining high scattering cross-section efficiency, thus providing a general design guideline for efficient light trapping with scattering nanoparticles. The work is extended to include comprehensive optoelectronic simulations of plasmonic solar cells in which the scattering metals are made from either Au, Ag or Al. We show that Al particles provide...

  8. CIBS Solar Cell Development Final Scientific/Technical Report

    SciTech Connect (OSTI)

    Exstrom, Christopher L.; Soukup, Rodney J.; Ianno, Natale J.

    2011-09-28T23:59:59.000Z

    Efforts to fabricate and study a new photovoltaic material, copper indium boron diselenide (CuInxB1-xSe2 or CIBS), were undertaken. Attempts to prepare CIBS using sputtering deposition techniques resulted in segregation of boron from the rest of elements in the material. CIBS nanocrystals were prepared from the reaction of elemental Se with CuCl, InCl3, and boric acid in solution, but the product material quickly decomposed upon heating that was required in attempts to convert the nanocrystals into a thin film. The investigation of the reasons for the lack of CIBS material stability led to new structure-property studies of closely-related photovoltaic systems as well as studies of new solar cell materials and processing methods that could enhance the development of next-generation solar technologies. A detailed compositional study of CuIn1-xAlxSe2 (CIAS, a system closely related to CIBS) revealed a non-linear correlation between crystal lattice size and the Al/(In+Al) ratios with dual-phase formation being observed. A new nanocrystal-to-thin-film processing method was developed for the preparation of CuIn1-xGaxSe2 (CIGS) thin films in which colloidal Se particles are sprayed in contact with CuIn1-xGaxS2 nanoparticles and heated in an argon atmosphere with no other Se source in the system. The process is non-vacuum and does not require toxic gases such as Se vapor or H2Se. Expertise gained from these studies was applied to new research in the preparation of thin-film pyrite FeS2, an attractive earth-abundant candidate material for next-generation photovoltaics. Three methods successfully produced pure pyrite FeS2 films: sulfurization of sputtered Fe films, chemical bath deposition, and sulfurization of Fe2O3 sol-gel precursors. The last method produced pinhole-free films that may be viable for device development. Nickel, platinum, and possibly carbon would appear to serve as good ohmic contact materials. While CdS has a reasonable conduction band energy match to serve as an n-type buffer material in a pyrite FeS2-based solar cell, the less toxic SnS2 is being explored for this purpose.

  9. Microbial Fuel Cells -Solar Times http://solar.rain-barrel.net/microbial-fuel-cells/ 1 of 3 6/28/2006 11:32 AM

    E-Print Network [OSTI]

    Lovley, Derek

    Microbial Fuel Cells - Solar Times http://solar.rain-barrel.net/microbial-fuel-cells/ 1 of 3 6/28/2006 11:32 AM Microbial Fuel Cells Posted in Alternative Energy by admin. The other end of solar energy? As the search for fuel cells goes on, many environmentalists give all their attention to solar energy

  10. Metallic Inks for Solar Cells: Cooperative Research and Development Final Report, CRADA Number CRD-10-370

    SciTech Connect (OSTI)

    van Hest, M.

    2013-04-01T23:59:59.000Z

    This document describes the statement of work for National Renewable Energy Laboratory (NREL) as a subcontractor for Applied Nanotech, Inc. (ANI) for the Phase II SBIR contract with the Department of Energy to build silicon solar cells using non-contact printed, nanoparticle-based metallic inks. The conductive inks are based upon ANI's proprietary method for nanoparticle dispersion. The primary inks under development are aluminum for silicon solar cell back plane contacts and copper for top interdigitated contacts. The current direction of silicon solar cell technology is to use thinner silicon wafers. The reduction in wafer thickness reduces overall material usage and can increase efficiency. These thin silicon wafers are often very brittle and normal methods used for conductive feed line application, such as screen-printing, are detrimental. The Phase II program will be focused on materials development for metallic inks that can be applied to a silicon solar cell using non-contact methods. Uniform BSF (Back Surface Field) formation will be obtained by optimizing ink formulation and curing conditions to improve cell efficiency.

  11. Core/Shell heterojunction nanowire solar cell fabricated by lithographically patterned nanowire electrodeposition method

    E-Print Network [OSTI]

    Ghosh, Somnath

    2012-01-01T23:59:59.000Z

    width dependent study of Solar Cell parameters Mott-SchotkyCore/Shell NW based solar cells and NIR photodetectors. Thep-n heterojunction NW solar cells and detailed study of the

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

    E-Print Network [OSTI]

    Chung, Choong-Heui

    2012-01-01T23:59:59.000Z

    CuInS x Se 2-x solar cells and its effect on defectabundant Cu 2 ZnSn(S,Se) 4 solar cells”, submitted 5. B. K.Visibly transparent polymer solar cells produced by solution

  13. Lead selenide nanowire solar cells via LPNE and its new found derivatives

    E-Print Network [OSTI]

    Hujdic, Justin

    2012-01-01T23:59:59.000Z

    associated with producing a solar cell and will therefore beabsorber layer in my solar cell, and proceed to chapter 3 ofdevices, including my solar cells, and how I have begun

  14. Panoramic view of electrochemical pseudocapacitor and organic solar cell research in molecularly engineered energy materials (MEEM)

    E-Print Network [OSTI]

    2014-01-01T23:59:59.000Z

    al. The State of Organic Solar Cells?A Meta Analysis. Sol.Efficiency in Polymer Solar Cells. Adv. Funct. Mater. 2009,Bulk- Heterojunction Solar Cells. J. Phys. Chem. C 2011,

  15. Structural Integration of Silicon Solar Cells and Lithium-ion Batteries Using Printed Electronics

    E-Print Network [OSTI]

    Kang, Jin Sung

    2012-01-01T23:59:59.000Z

    better mechanical durability. CIGS solar cell has about 20%5]. However, CIGS solar cells degrade with humidity andSelenide (CIGS)[3] and organic polymer[4] solar cells are

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

    E-Print Network [OSTI]

    Chung, Choong-Heui

    2012-01-01T23:59:59.000Z

    cm 2 ) efficiency CIGS solar cells taken from reference [and 20.3% efficiency CIGS solar cells [6] through the use ofcm 2 ) efficiency CIGS solar cells taken from reference [6].

  17. 1D Modeling of Solar Cells ELEN E9501 Course Project

    E-Print Network [OSTI]

    Lavaei, Javad

    1D Modeling of Solar Cells ELEN E9501 Course Project Columbia University Department of Electrical.............................................................................................................8 4.3 Simulation Results of the Solar Cell Model......................................................................................................13 #12;2 ILLUSTRATIONS Figure 1. IV Characteristic of the solar cell

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

    E-Print Network [OSTI]

    Mariani, Giacomo

    2013-01-01T23:59:59.000Z

    silicon nanowires as solar cells and nanoelectronic powerTowards efficient hybrid solar cells based on fully polymerSariciftci, N. S. Hybrid solar cells, Inorg. Chim. Acta 361,

  19. Kelvin Probe Force Microscopy for in situ Electrical Characterization of Organic Solar Cells

    E-Print Network [OSTI]

    Fisher, Frank

    Kelvin Probe Force Microscopy for in situ Electrical Characterization of Organic Solar Cells., University of Pittsburgh The most efficient organic solar cell today is made from blending conjugated donors and acceptors in bulk heterojunction organic solar cells. Most microscopic characterization

  20. In Situ X-Ray Scattering Helps Optimize Printed Solar Cells

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    In Situ X-Ray Scattering Helps Optimize Printed Solar Cells In Situ X-Ray Scattering Helps Optimize Printed Solar Cells Print Wednesday, 25 February 2015 00:00 Plastic solar cells...

  1. The Design of Organic Polymers and Small Molecules to Improve the Efficiency of Excitonic Solar Cells

    E-Print Network [OSTI]

    Armstrong, Paul Barber

    2010-01-01T23:59:59.000Z

    J. The physics of solar cells; Imperial College Press,for organic polymer solar cells investigated to date. Thebulk heterojunction organic solar cells, blends of a p-type

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

    E-Print Network [OSTI]

    Mariani, Giacomo

    2013-01-01T23:59:59.000Z

    Towards efficient hybrid solar cells based on fully polymerSariciftci, N. S. Hybrid solar cells, Inorg. Chim. Acta 361,Y. , Warta, W. , Dunlop, E.D. Solar cell efficiency table (

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

    E-Print Network [OSTI]

    Huang, Jianqiao

    2012-01-01T23:59:59.000Z

    of a p-i-n thin-film solar cell with front transparent con-for thin-film a-si:h solar cells. Progress in Photovoltaics,in thin-film silicon solar cells. Optics Communications,

  4. Theory of Current Transients in Planar Semiconductor Devices: Insights and Applications to Organic Solar Cells

    E-Print Network [OSTI]

    Hawks, SA; Finck, BY; Schwartz, BJ

    2015-01-01T23:59:59.000Z

    a polythiophene:fullerene solar cell, Appl. Phys. Lett. 92,polymer: fullerene solar cells made by solution-sequentialmeasurements of P3HT:PCBM solar cells, Adv. Energy Mater. 2,

  5. Thermodynamics, Entropy, Information and the Efficiency of Solar Cells

    E-Print Network [OSTI]

    Abrams, Zeev R.

    2012-01-01T23:59:59.000Z

    CIGS, so the addition of the dc layer would not alter the material choice for a solar cell.solar cell, the use of GaAs has recently become feasible due to scalable manufacturing techniques, and compound materials such as CIGS (

  6. SUPPORTING INFORMATION Si Microwire Solar Cells: Improved Efficiency with a

    E-Print Network [OSTI]

    S1 SUPPORTING INFORMATION Si Microwire Solar Cells: Improved Efficiency with a Conformal SiO2 Layer Technologies, 174 Haverhill Road, Topsfield, MA 01983 School of Engineering and Applied Sciences, Harvard improvements (%) of Si microwire solar cells (6 µµµµm height) after conformal SiO2 coating SiO2 thickness Jsc

  7. Hierarchically structured photoelectrodes for dye-sensitized solar cells

    E-Print Network [OSTI]

    Cao, Guozhong

    Hierarchically structured photoelectrodes for dye-sensitized solar cells Qifeng Zhang and Guozhong or one-dimensional assemblies. Introduction Dye-sensitized solar cells (DSCs) are a category Cao* DOI: 10.1039/c0jm04345a This paper highlights several significant achievements in dye-sensitized

  8. Radial Electron Collection in Dye-Sensitized Solar Cells

    E-Print Network [OSTI]

    Radial Electron Collection in Dye-Sensitized Solar Cells Alex B. F. Martinson,, Jeffrey W. Elam photoelectrode architecture consisting of concentric conducting and semiconducting nanotubes for use in dye-sensitized solar cells (DSSCs). Atomic layer deposition is employed to grow indium tin oxide (ITO) within a porous

  9. CRADA Final Report: Process development for hybrid solar cells

    SciTech Connect (OSTI)

    Ager, Joel W

    2011-02-14T23:59:59.000Z

    TCF funding of a CRADA between LBNL and RSLE leveraged RSLE's original $1M investment in LBNL research and led to development of a solar cell fabrication process that will bring the high efficiency, high voltage hybrid tandem solar cell closer to commercialization. RSLE has already built a pilot line at its Phoenix, Arizona site.

  10. Light Trapping in Solar Cells Using Resonant Nanostructures P. Spinelli

    E-Print Network [OSTI]

    van Rooij, Robert

    and by improving their photovoltaic conversion efficiency. For Si solar cells, both challenges can be achievedLight Trapping in Solar Cells Using Resonant Nanostructures P. Spinelli #12;Summary Photovoltaics of energy for our society. In order for this to happen, photovoltaics needs to be economically competitive

  11. ADOPT-A-CELL PROGRAM Help support the success of the CalSol solar team by

    E-Print Network [OSTI]

    Mofrad, Mohammad R. K.

    . $20: Solar Encapsulation High-tech solar lamination improves solar energy collection and increasesADOPT-A-CELL PROGRAM Help support the success of the CalSol solar team by adopting a small part the durability of solar cells. The money will go towards laminating one single solar cell. $50: Solar Cell Solar

  12. Review paper: Toward highly efficient quantum-dot-and dye-sensitized solar cells

    E-Print Network [OSTI]

    Park, Byungwoo

    Review paper: Toward highly efficient quantum-dot- and dye-sensitized solar cells Hongsik Choi Interface control Light harvesting Tandem solar cell a b s t r a c t Dye- and quantum-dot-sensitized solar technologies of silicon-based solar cells should be resolved [7]. Dye-sensitized solar cells (DSSCs) have been

  13. Amorphous silicon/crystalline silicon heterojunctions: The future of high-efficiency silicon solar cells

    E-Print Network [OSTI]

    Firestone, Jeremy

    ;5 Record efficiencies #12;6 Diffused-junction solar cells Diffused-junction solar cell Chemical passivation to ~650 mV #12;7 Silicon heterojunction solar cells a-Si:H provides excellent passivation of c-Si surface Heterojunction solar cell Chemical passivation Chemical passivation #12;8 Voc and silicon heterojunction solar

  14. High-Efficiency Solar Cell Concepts: Physics, Materials, and Devices

    SciTech Connect (OSTI)

    Mascarenhas, A.; Francoeur, S.; Seong, M. J.; Fluegel, B.; Zhang, Y.; Wanlass, M. W.

    2005-01-01T23:59:59.000Z

    Over the past three decades, significant progress has been made in the area of high-efficiency multijunction solar cells, with the effort primarily directed at current-matched solar cells in tandem. The key materials issues here have been obtaining semiconductors with the required bandgaps for sequential absorption of light in the solar spectrum and that are lattice matched to readily available substrates. The GaInP/GaAs/Ge cell is a striking example of success achieved in this area. Recently, several new approaches for high-efficiency solar cell design have emerged, that involve novel methods for tailoring alloy bandgaps, as well as alternate technologies for hetero-epitaxy of III-V's on Si. The advantages and difficulties expected to be encountered with each approach will be discussed, addressing both the materials issues and device physics whilst contrasting them with other fourth-generation solar cell concepts.

  15. Limiting Emission Angle for Improved Solar Cell

    E-Print Network [OSTI]

    cooling, waste heat recovery and solar electricity generation, low values of the thermoelectric figure

  16. Efficiency of silicon solar cells containing chromium

    DOE Patents [OSTI]

    Frosch, Robert A. Administrator of the National Aeronautics and Space (New Port Beach, CA); Salama, Amal M. (New Port Beach, CA)

    1982-01-01T23:59:59.000Z

    Efficiency of silicon solar cells containing about 10.sup.15 atoms/cm.sup.3 of chromium is improved about 26% by thermal annealing of the silicon wafer at a temperature of 200.degree. C. to form chromium precipitates having a diameter of less than 1 Angstrom. Further improvement in efficiency is achieved by scribing laser lines onto the back surface of the wafer at a spacing of at least 0.5 mm and at a depth of less than 13 micrometers to preferentially precipitate chromium near the back surface and away from the junction region of the device. This provides an economical way to improve the deleterious effects of chromium, one of the impurities present in metallurgical grade silicon material.

  17. Solar cells incorporating light harvesting arrays

    DOE Patents [OSTI]

    Lindsey, Jonathan S. (Raleigh, NC); Meyer, Gerald J. (Baltimore, MD)

    2002-01-01T23:59:59.000Z

    A solar cell incorporates a light harvesting array that comprises: (a) a first substrate comprising a first electrode; and (b) a layer of light harvesting rods electrically coupled to the first electrode, each of the light harvesting rods comprising a polymer of Formula I: X.sup.1.paren open-st.X.sup.m+1).sub.m (I) wherein m is at least 1, and may be from two, three or four to 20 or more; X.sup.1 is a charge separation group (and preferably a porphyrinic macrocycle, which may be one ligand of a double-decker sandwich compound) having an excited-state of energy equal to or lower than that of X.sup.2 ; and X.sup.2 through X.sup.m+1 are chromophores (and again are preferably porphyrinic macrocycles).

  18. Solar cells incorporating light harvesting arrays

    DOE Patents [OSTI]

    Lindsey, Jonathan S.; Meyer, Gerald J.

    2003-07-22T23:59:59.000Z

    A solar cell incorporates a light harvesting array that comprises: (a) a first substrate comprising a first electrode; and (b) a layer of light harvesting rods electrically coupled to the first electrode, each of the light harvesting rods comprising a polymer of Formula I: ##EQU1## wherein m is at least 1, and may be from two, three or four to 20 or more; X.sup.1 is a charge separation group (and preferably a porphyrinic macrocycle, which may be one ligand of a double-decker sandwich compound) having an excited-state of energy equal to or lower than that of X.sup.2 ; and X.sup.2 through X.sup.m+1 are chromophores (and again are preferably porphyrinic macrocycles).

  19. The analysis and optimization of a spherical silicon solar cell

    E-Print Network [OSTI]

    McKee, William Randall

    1976-01-01T23:59:59.000Z

    silicon solar cell has been estimated using a cylindrical solar cell with some modifications as an approximate model. Calculations were made for both the cylindrical model and the conventional planar cell with the aid of a Fortran IV computer program... ln the p nnd n layers, respect lvely (cm I) N(X) monochromatic photon flux incident on the solar cell (cm g sec ~ o ) N 0 number of photons/cm sec with wavelengths shorter than l. lp (cm sec ) n po' no thermal equilibrium concentration...

  20. Hyperthermia HeLa cell treatment with silica coated manganese oxide nanoparticles

    E-Print Network [OSTI]

    Villanueva, A; Alonso, JM; Rueda, T; Martínez, A; Crespo, P; Morales, MP; Fernandez, MA Gonzalez; Valdes, J; Rivero, G

    2009-01-01T23:59:59.000Z

    HeLa tumour cells incubated with ferromagnetic nanoparticles of manganese oxide perovskite La0.56(SrCa)0.22MnO3 were treated with a high frequency alternating magnetic field. The particles were previously coated with silica to improve their biocompatibility. The control assays made with HeLa tumour cells showed that cell survival and growth rate were not affected by the particle internalization in cells, or by the electromagnetic field on cells without nanoparticles. The application of an alternating electromagnetic field to cells incubated with this silica coated manganese oxide induced a significant cellular damage that finally lead to cell death by an apoptotic mechanism.

  1. Effects of cell area on the performance of dye sensitized solar cell

    SciTech Connect (OSTI)

    Khatani, Mehboob, E-mail: mkhatani@hotmail.com, E-mail: noranimuti-mohamed@petronas.com.my, E-mail: hishmid@petronas.com.my, E-mail: azclement@yahoo.com, E-mail: aeska07@gmail.com; Mohamed, Norani Muti, E-mail: mkhatani@hotmail.com, E-mail: noranimuti-mohamed@petronas.com.my, E-mail: hishmid@petronas.com.my, E-mail: azclement@yahoo.com, E-mail: aeska07@gmail.com; Hamid, Nor Hisham, E-mail: mkhatani@hotmail.com, E-mail: noranimuti-mohamed@petronas.com.my, E-mail: hishmid@petronas.com.my, E-mail: azclement@yahoo.com, E-mail: aeska07@gmail.com; Sahmer, Ahmad Zahrin, E-mail: mkhatani@hotmail.com, E-mail: noranimuti-mohamed@petronas.com.my, E-mail: hishmid@petronas.com.my, E-mail: azclement@yahoo.com, E-mail: aeska07@gmail.com; Samsudin, Adel, E-mail: mkhatani@hotmail.com, E-mail: noranimuti-mohamed@petronas.com.my, E-mail: hishmid@petronas.com.my, E-mail: azclement@yahoo.com, E-mail: aeska07@gmail.com [Centre of Innovative Nanostructures and Nanodevices (COINN), UTP (Malaysia)

    2014-10-24T23:59:59.000Z

    Dye sensitized solar cells (DSCs) have significant advantage over the current silicon cells by having low manufacturing cost and potentially high conversion efficiency. Therefore, DSCs are expected to be used as the next generation solar cell device that covers wide range of new applications. In order to achieve highly efficient DSCs for practical application, study on the effect of increasing the cell’s area on the performance of dye sensitized solar need to be carried out. Three different DSC cell areas namely, 1, 12.96 and 93.5 cm{sup 2} respectively were fabricated and analyzed through solar simulator and electrochemical impedance spectroscopy (EIS). From the analysis of electrochemical impedance spectroscopy (EIS), it was observed that the cell’s electron lifetime was influenced significantly by the cell’s area. Although the collection efficiency of all cells recorded to be approximately 100% but higher recombination rate with increased cell area reduced the performance of the cell.

  2. Solar Energy Materials & Solar Cells 58 (1999) 199}208 The behaviour of Na implanted into Mo thin "lms

    E-Print Network [OSTI]

    Rockett, Angus

    Solar Energy Materials & Solar Cells 58 (1999) 199}208 The behaviour of Na implanted into Mo thin, As ngstro( m Solar Center, P.O. Box 534, SE-751 21 Uppsala, Sweden Department of Materials Science Mo thin "lms used as back contacts for Cu(In,Ga)Se solar cells. The samples were analysed

  3. Nonendocytic Delivery of Functional Engineered Nanoparticles into the Cytoplasm of Live Cells Using a Novel, High-Throughput Microfluidic Device

    E-Print Network [OSTI]

    Lee, Jungmin

    The ability to straightforwardly deliver engineered nanoparticles into the cell cytosol with high viability will vastly expand the range of biological applications. Nanoparticles could potentially be used as delivery ...

  4. Production of core–shell type conducting FTO/TiO{sub 2} photoanode for dye sensitized solar cells

    SciTech Connect (OSTI)

    Icli, Kerem Cagatay [Micro and Nanotechnology Graduate Program, Middle East Technical University, Dumlupinar Bulvari, 06800 Ankara (Turkey); Center for Solar Energy Research and Applications (GUNAM), Middle East Technical University, Dumlupinar Bulvari, 06800 Ankara (Turkey); Yavuz, Halil Ibrahim [Center for Solar Energy Research and Applications (GUNAM), Middle East Technical University, Dumlupinar Bulvari, 06800 Ankara (Turkey); Department of Metallurgical and Materials Engineering, Middle East Technical University, Dumlupinar Bulvari, 06800 Ankara (Turkey); Ozenbas, Macit, E-mail: ozenbas@metu.edu.tr [Center for Solar Energy Research and Applications (GUNAM), Middle East Technical University, Dumlupinar Bulvari, 06800 Ankara (Turkey); Department of Metallurgical and Materials Engineering, Middle East Technical University, Dumlupinar Bulvari, 06800 Ankara (Turkey)

    2014-02-15T23:59:59.000Z

    Core–shell type photoanode composed of electrically conducting fluorine doped tin dioxide (FTO) matrix and TiO{sub 2} shell layer was prepared and applied in dye sensitized solar cells. Effects of fluorine doping on tin dioxide based cells and precursor material on shell layer were investigated. Fluorine doped tin dioxide nanoparticles were synthesized under hydrothermal conditions and resistivity value down to 17 ? cm was achieved. Cells constructed from FTO nanoparticles show enhanced performance compared to intrinsic SnO{sub 2}. Deposition of thin blocking TiO{sub 2} layers was conducted using ammonium hexafluorotitanate and titanium tetrachloride aqueous solutions for different dipping durations which yielded significant deviations in the layer morphology and affected cell parameters. Best results were obtained with titanium tetrachloride treated cells giving 11.51 mA/cm{sup 2} photocurrent density and they were comparable with that of pure TiO{sub 2} based cells prepared under identical conditions. - Graphical abstract: Core shell type FTO matrix was formed as TiO{sub 2} is the shell material to create a blocking layer between FTO core and the electrolyte for suppressed recombination and efficiency enhancement. Display Omitted - Highlights: • Core–shell type photoanode using conducting FTO matrix and TiO{sub 2} shell was prepared. • FTO nanoparticles having resistivity value down to 17 ? cm was achieved. • Best cell parameters were obtained with TiCl{sub 4} treated cells. • FTO nanoparticle based cells show enhanced performance compared to intrinsic SnO{sub 2}. • Photocurrent in TiCl{sub 4} treated cells is found as comparable to pure TiO{sub 2} cell.

  5. Neural Network Modeling of Degradation of Solar Cells

    SciTech Connect (OSTI)

    Gupta, Himanshu; Ghosh, Bahniman [Department of Electrical Engineering, Indian Institute of Technology, Kanpur, 208016 (India); Banerjee, Sanjay K. [Department of Electrical and Computer Engineering, University of Texas at Austin, Austin, TX, 78758 (United States)

    2011-05-25T23:59:59.000Z

    Neural network modeling has been used to predict the degradation in conversion efficiency of solar cells in this work. The model takes intensity of light, temperature and exposure time as inputs and predicts the conversion efficiency of the solar cell. Backpropagation algorithm has been used to train the network. It is found that the neural network model satisfactorily predicts the degradation in efficiency of the solar cell with exposure time. The error in the computed results, after comparison with experimental results, lies in the range of 0.005-0.01, which is quite low.

  6. Presented at the 2nd International Meeting on Electrochromism, IME2, (San Diego, CA, October, 1996), to be published in Solar Energy Materials and Solar Cells. LBNL #39633

    E-Print Network [OSTI]

    ), to be published in Solar Energy Materials and Solar Cells. LBNL #39633 ANALYSIS OF DURABILITY IN LITHIUM NICKEL

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

    E-Print Network [OSTI]

    Thirumalai, Devarajan

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

  8. The Shockley-Queisser limit for nanostructured solar cells

    E-Print Network [OSTI]

    Xu, Yunlu; Munday, Jeremy N

    2014-01-01T23:59:59.000Z

    The Shockley-Queisser limit describes the maximum solar energy conversion efficiency achievable for a particular material and is the standard by which new photovoltaic technologies are compared. This limit is based on the principle of detailed balance, which equates the photon flux into a device to the particle flux (photons or electrons) out of that device. Nanostructured solar cells represent a new class of photovoltaic devices, and questions have been raised about whether or not they can exceed the Shockley-Queisser limit. Here we show that single-junction nanostructured solar cells have a theoretical maximum efficiency of 42% under AM 1.5 solar illumination. While this exceeds the efficiency of a non- concentrating planar device, it does not exceed the Shockley-Queisser limit for a planar device with optical concentration. We conclude that nanostructured solar cells offer an important route towards higher efficiency photovoltaic devices through a built-in optical concentration.

  9. Current- and lattice-matched tandem solar cell

    DOE Patents [OSTI]

    Olson, J.M.

    1985-10-21T23:59:59.000Z

    A multijunction (cascade) tandem photovoltaic solar cell device is fabricated of a Ga/sub x/In/sub 1-x/P (0.505 equal to or less than x equal to or less than 0.515) top cell semiconductor lattice-matched to a GaAs bottom cell semiconductor at a low resistance heterojunction, preferably a p/sup +//n/sup +/ heterojunction between the cells. The top and bottom cells are both lattice-matched and current-matched for high efficiency solar radiation conversion to electrical energy.

  10. Method for forming indium oxide/n-silicon heterojunction solar cells

    DOE Patents [OSTI]

    Feng, Tom (Morris Plains, NJ); Ghosh, Amal K. (New Providence, NJ)

    1984-03-13T23:59:59.000Z

    A high photo-conversion efficiency indium oxide/n-silicon heterojunction solar cell is spray deposited from a solution containing indium trichloride. The solar cell exhibits an Air Mass One solar conversion efficiency in excess of about 10%.

  11. Experiment Based Teaching of Solar Cell Operation and Characterization Using the SolarLab Platform

    E-Print Network [OSTI]

    Sera, Dezso

    of Energy Technology, Aalborg University. Keywords: characterization, experiment based, modelling, solar (MSc and PhD level) taught at the Department of Energy Technology, Aalborg University. SOLAR CELL S. V. Spataru, D. Sera, T. Kerekes, R. Teodorescu Department of Energy Technology Aalborg University

  12. 24th European Photovoltaic Solar Energy Conference, Hamburg, Germany, Sept. 2009 THE BURIED EMITTER SOLAR CELL CONCEPT

    E-Print Network [OSTI]

    area buried emitter solar cell structure circumvents the problem that at present there are no cost EMITTER SOLAR CELL CONCEPT: INTERDIGITATED BACK-JUNCTION STRUCUTRE WITH VIRTUALLY 100% EMITTER COVERAGE back contacted solar cell combines large area emitter allocation with effective insulation of emitter

  13. Infrared modulation spectroscopy of interfaces in amorphous silicon solar cells

    E-Print Network [OSTI]

    Schiff, Eric A.

    Infrared modulation spectroscopy of interfaces in amorphous silicon solar cells Kai Zhu a,1 , E Solar, Toano, VA 23168, USA Abstract We report infrared depletion modulation spectra for near an infrared modulation spectroscopy technique that probes the optical spectra of dopants and defects

  14. Strongly Correlated Electron Systems Functionalized for Solar Cells and Memristors

    E-Print Network [OSTI]

    " #12;Grand Energy Challenge Gap between production and demand: ~14TW by 2050 Install one 1GW new power Demand total industrial developing US ee/fsu Energy source World Capacity Solar Geothermal Biomass Hydro Optimization of gap: max efficiency: 31% (Shockley Queisser 1961) In real PV cells 80-85% of incident solar

  15. Investigation of the Role of Trap States in Solar Cell Reliability using Photothermal Deflection Spectroscopy

    E-Print Network [OSTI]

    Bezryadina, Anna Sergeyevna

    2012-01-01T23:59:59.000Z

    solar cell lead to a higher fill factor, therefore resulting in greater efficiency value, and bringing the cell's output power

  16. Synchrotron-based investigations of the nature and impact of iron contamination in multicrystalline silicon solar cell materials

    E-Print Network [OSTI]

    2004-01-01T23:59:59.000Z

    Solar Energy Materials & Solar Cells 72, 441 (2002). O. F.discussions about solar cells and defects in cast mc-Si;on Crystalline Silicon Solar Cell Materials and Processes (

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

    E-Print Network [OSTI]

    Romeo, Alessandro

    for the solar cell, therefore high specific power (ratio of out- put power to the weight) solar cells]. The high specific power is an important issue for space solar cells: if satellites are lighter1. INTRODUCTION Polycrystalline CdTe thin films solar cells have shown long term stable performance

  18. DISSERTATION THE EFFECT OF TRAPPING DEFECTS ON CIGS SOLAR-CELL

    E-Print Network [OSTI]

    Sites, James R.

    DISSERTATION THE EFFECT OF TRAPPING DEFECTS ON CIGS SOLAR-CELL PERFORMANCE Submitted by Pamela K ENTITLED THE EFFECT OF TRAPPING DEFECTS ON CIGS SOLAR-CELL PERFORMANCE BE ACCEPTED AS FULFILLING IN PART RE OF DISSERTATION THE EFFECT OF TRAPPING DEFECTS ON CIGS SOLAR-CELL PERFORMANCE The relationship between basic solar-cell

  19. Ultrathin, high-efficiency, broad-band, omni-acceptance, organic solar cells enhanced by

    E-Print Network [OSTI]

    Ultrathin, high-efficiency, broad-band, omni- acceptance, organic solar cells enhanced by plasmonic: Three of central challenges in solar cells are high light coupling into solar cell, high light trapping and demonstration of a new ultra-thin high- efficiency organic solar cell (SC), termed "plasmonic cavity

  20. NREL Makes Substantial Progress in Developing CZTSe Solar Cells (Fact Sheet) (Revised)

    SciTech Connect (OSTI)

    Not Available

    2011-11-01T23:59:59.000Z

    By defining the deposition process, NREL has significantly improved the conversion efficiency of CZTSe solar cells.

  1. Laser processing of nanocrystalline TiO2 films for dye-sensitized solar cells

    E-Print Network [OSTI]

    Arnold, Craig B.

    Laser processing of nanocrystalline TiO2 films for dye-sensitized solar cells H. Kim,a) G. P­20 m thick) layers incorporated in dye-sensitized solar cells. Laser direct-write is a laser techniques to produce porous nc- TiO2 films required for dye-sensitized solar cells. The dye solar cells

  2. Planar Waveguide-Nanowire Integrated Three-Dimensional Dye-Sensitized Solar Cells

    E-Print Network [OSTI]

    Wang, Zhong L.

    Planar Waveguide-Nanowire Integrated Three-Dimensional Dye-Sensitized Solar Cells Yaguang Wei, Chen to fabricate three-dimensional (3D) dye-sensitized solar cells (DSSCs) by integrating planar optical waveguide cells that can be expanded to organic- and inorganic-based solar cells. KEYWORDS Dye-sensitized solar

  3. Increased light harvesting in dye-sensitized solar cells with energy relay dyes

    E-Print Network [OSTI]

    McGehee, Michael

    Increased light harvesting in dye-sensitized solar cells with energy relay dyes Brian E. Hardin1 factors. However, dye-sensitized solar cells do not completely absorb all of the photons from the visible pathway to develop more efficient dye-sensitized solar cells. D ye-sensitized solar cells (DSCs) work

  4. The construction of tandem dye-sensitized solar cells from chemically-derived nanoporous photoelectrodes

    E-Print Network [OSTI]

    Park, Byungwoo

    The construction of tandem dye-sensitized solar cells from chemically-derived nanoporous Available online 24 October 2014 Keywords: Tandem solar cell Selective etching Dye-sensitized solar cell Nanoporous electrode a b s t r a c t A tandem dye-sensitized solar cell (tandem-DSSC) was synthesized

  5. Rational design of hybrid dye-sensitized solar cells composed of double-layered photoanodes with

    E-Print Network [OSTI]

    Lin, Zhiqun

    Rational design of hybrid dye-sensitized solar cells composed of double-layered photoanodes,a Bailiang Xue,b Wei Liu,c Zhiqun Lina and Yulin Deng*bc A uniquely structured dye-sensitized solar cell tandem solar cells, leading to higher power conversion efficiency. Dye-sensitized solar cells (DSSCs

  6. Enhanced Photovoltaic Performance of Nanostructured Hybrid Solar Cell Using Highly Oriented TiO2 Nanotubes

    E-Print Network [OSTI]

    Cao, Guozhong

    -called third generation of solar cells including dye-sensitized solar cells, DSCs2,3 and organic phoEnhanced Photovoltaic Performance of Nanostructured Hybrid Solar Cell Using Highly Oriented TiO2 nanotubes can be effectively controlled for the suitable use for a hybrid solar cell by varying the diameter

  7. Organic solar cells: An overview focusing on active layer morphology Travis L. Benanti & D. Venkataraman*

    E-Print Network [OSTI]

    Venkataraman, Dhandapani "DV"

    Review Organic solar cells: An overview focusing on active layer morphology Travis L. Benanti & D/acceptor blend, morphology, photovoltaic devices, plastic solar cells, thin films Abstract Solar cells heterojunction concept. This review provides an overview of organic solar cells. Topics covered include: a brief

  8. Microstructured anti-reflection surface design for the omni-directional solar cells

    E-Print Network [OSTI]

    Zhou, Weidong

    Microstructured anti-reflection surface design for the omni-directional solar cells Li Chen for the formation of hemispherical structures as an omni-directional anti-reflection (omni-AR) coating in solar cell current in such hemispherical solar cells hence enhanced to 1.5 times of bulk silicon solar cells

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

    E-Print Network [OSTI]

    Sites, James R.

    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

  10. DISSERTATION Investigation of Spatial Variations in Collection Efficiency of Solar Cells

    E-Print Network [OSTI]

    Sites, James R.

    DISSERTATION Investigation of Spatial Variations in Collection Efficiency of Solar Cells Submitted BY JASON F. HILTNER ENTITLED INVESTIGATION OF SPATIAL VARIATIONS IN COLLECTION EFFICIENCY OF SOLAR CELLS OF SOLAR CELLS In an effort to investigate spatial variations in solar cells, an apparatus which is capable

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

    E-Print Network [OSTI]

    Sites, James R.

    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-FILM SOLAR CELLS The CdTe thin-film solar cell has a large absorption coefficient and high theoretical

  12. innovati nNREL Designs Promising New Oxides for Solar Cells

    E-Print Network [OSTI]

    innovati nNREL Designs Promising New Oxides for Solar Cells High-efficiency, thin-film solar cells material. The upper TCO contact in a solar cell allows light to reach the absorber material below, which by the TCO to an external circuit, forming the negative terminal of the solar cell. TCOs used in this fashion

  13. Design and fabrication of photonic crystals in epitaxial free silicon for ultrathin solar cells

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Design and fabrication of photonic crystals in epitaxial free silicon for ultrathin solar cells photovoltaic solar cell. Optical simulations performed on a complete solar cell revealed that patterning to obtain ultrathin patterned solar cells. Keywords: Photonic crystals; Epitaxial crystalline silicon; Thin

  14. DESIGN APPROACHES AND MATERIALS PROCESSES FOR ULTRAHIGH EFFICIENCY LATTICE MISMATCHED MULTI-JUNCTION SOLAR CELLS

    E-Print Network [OSTI]

    Atwater, Harry

    -JUNCTION SOLAR CELLS Melissa J. Griggs 1 , Daniel C. Law 2 , Richard R. King 2 , Arthur C. Ackerman 3 , James M heterostructures grown in a multi-junction solar cell-like structure by MOCVD. Initial solar cell data are also of the minority carrier lifetime. INTRODUCTION High efficiency triple junction solar cells have recently been

  15. RANDOM DEPOSITION MODEL OF CDS LAYER IN CDS/CDTE THINFILM SOLAR CELLS

    E-Print Network [OSTI]

    Sites, James R.

    THESIS RANDOM DEPOSITION MODEL OF CDS LAYER IN CDS/CDTE THIN­FILM SOLAR CELLS Submitted by Lei Chen LAYER IN CDS/CDTE THIN­FILM SOLAR CELLS BE AC- CEPTED AS FULFILLING IN PART REQUIREMENTS FOR THE DEGREE MODEL OF CDS LAYER IN CDS/CDTE THIN­FILM SOLAR CELLS Thin­film solar cells are developing dramatically

  16. X-ray absorption spectroscopy of biomimetic dye molecules for solar cells Peter L. Cook,1

    E-Print Network [OSTI]

    Himpsel, Franz J.

    X-ray absorption spectroscopy of biomimetic dye molecules for solar cells Peter L. Cook,1 Xiaosong November 2009 Dye-sensitized solar cells are potentially inexpensive alternatives to traditional semiconductor solar cells. In order to optimize dyes for solar cells we systematically investigate

  17. Polymer Solar Cells: New Materials, 3D Morphology, and Tandem...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Polymer Solar Cells: New Materials, 3D Morphology, and Tandem Devices March 2, 2010 at 3pm36-428 Ren Janssen Molecular Materials and Nanosystems, Eindhoven University of...

  18. New functional polymers for sensors, smart materials and solar cells

    E-Print Network [OSTI]

    Lobez Comeras, Jose Miguel

    2012-01-01T23:59:59.000Z

    Organic polymers can be used as the active component of sensors, smart materials, chemical-delivery systems and the active layer of solar cells. The rational design and modification of the chemical structure of polymers ...

  19. Nanostructured architectures for colloidal quantum dot solar cells

    E-Print Network [OSTI]

    Jean, Joel, S.M. Massachusetts Institute of Technology

    2013-01-01T23:59:59.000Z

    This thesis introduces a novel ordered bulk heterojunction architecture for colloidal quantum dot (QD) solar cells. Quantum dots are solution-processed nanocrystals whose tunable bandgap energies make them a promising ...

  20. Simulation of iron impurity gettering in crystalline silicon solar cells

    E-Print Network [OSTI]

    Powell, Douglas M. (Douglas Michael)

    2012-01-01T23:59:59.000Z

    This work discusses the Impurity-to-Efficiency (12E) simulation tool and applet. The 12E simulator models the physics of iron impurity gettering in silicon solar cells during high temperature processing. The tool also ...

  1. Thermodynamics, Entropy, Information and the Efficiency of Solar Cells

    E-Print Network [OSTI]

    Abrams, Zeev R.

    2012-01-01T23:59:59.000Z

    IR Infra-Red I sc Short-circuit current I-V Current vs.contributes to the short-circuit current of the solar cell.term. Since the short-circuit current is directly

  2. The renaissance of hybrid solar cells: progresses, challenges, and perspectives

    E-Print Network [OSTI]

    Feng, Gao; Ren, Shenqiang; Jianpu, Wang

    2013-06-12T23:59:59.000Z

    Solution-processed hybrid solar cells, a blend of conjugated polymers and semiconducting nanocrystals, are a promising candidate for next-generation energy-conversion devices. The renaissance of this field in recent years has yielded a much deeper...

  3. Light trapping limits in plasmonic solar cells: an analytical investigation

    E-Print Network [OSTI]

    Sheng, Xing

    We analytically investigate the light trapping performance in plasmonic solar cells with Si/metallic structures. We consider absorption enhancements for surface plasmon polaritons (SPPs) at planar Si/metal interfaces and ...

  4. Enhanced light absorption of solar cells and photodetectors by diffraction

    DOE Patents [OSTI]

    Zaidi, Saleem H.; Gee, James M.

    2005-02-22T23:59:59.000Z

    Enhanced light absorption of solar cells and photodetectors by diffraction is described. Triangular, rectangular, and blazed subwavelength periodic structures are shown to improve performance of solar cells. Surface reflection can be tailored for either broadband, or narrow-band spectral absorption. Enhanced absorption is achieved by efficient optical coupling into obliquely propagating transmitted diffraction orders. Subwavelength one-dimensional structures are designed for polarization-dependent, wavelength-selective absorption in solar cells and photodetectors, while two-dimensional structures are designed for polarization-independent, wavelength-selective absorption therein. Suitable one and two-dimensional subwavelength periodic structures can also be designed for broadband spectral absorption in solar cells and photodetectors. If reactive ion etching (RIE) processes are used to form the grating, RIE-induced surface damage in subwavelength structures can be repaired by forming junctions using ion implantation methods. RIE-induced surface damage can also be removed by post RIE wet-chemical etching treatments.

  5. Efficient light trapping structure in thin film silicon solar cells

    E-Print Network [OSTI]

    Sheng, Xing

    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, ...

  6. June 2009 UWMREPORT 15 solar cells turn Bolton roof

    E-Print Network [OSTI]

    Saldin, Dilano

    of the grid, renew- able generation and energy storage to determine how solar cells can support the grid, it will be the largest urban wind turbine in Wisconsin. There currently is one at the MATC campus in Mequon. T Assistant

  7. The analysis and optimization of a spherical silicon solar cell 

    E-Print Network [OSTI]

    McKee, William Randall

    1976-01-01T23:59:59.000Z

    the minority carriers. This differential equation must be solved for the appropriate geometry and boundary conditions to find the distribu- tion of photon generated carriers in the solar cell. Knowing this, the current density at any point in a given... by solving eq. (3) subject to boundary conditions (5) and (6). Knowing the distribution of the photon generated carriers, we can find the current ? voltage charac- teristics and the theoretical efficiency of the solar cell. However, before solving...

  8. Recent technological advances in thin film solar cells

    SciTech Connect (OSTI)

    Ullal, H.S.; Zwelbel, K.; Surek, T.

    1990-03-01T23:59:59.000Z

    High-efficiency, low-cost thin film solar cells are an exciting photovoltaic technology option for generating cost-effective electricity in 1995 and beyond. This paper reviews the substantial advances made by several thin film solar cell technologies, namely, amorphous silicon, copper indium diselenide, cadmium telluride, and polycrystalline silicon. Recent examples of utility demonstration projects of these emerging materials are also discussed. 8 refs., 4 figs.

  9. Nanoantennas for enhanced light trapping in transparent organic solar cells

    E-Print Network [OSTI]

    Voroshilov, Pavel M; Belov, Pavel A

    2014-01-01T23:59:59.000Z

    We propose a light-trapping structure offering a significant enhancement of photovoltaic absorption in transparent organic solar cells operating at infrared while the visible light transmission keeps sufficiently high. The main mechanism of light trapping is related with the excitation of collective oscillations of the metal nanoantenna arrays, characterized by advantageous field distribution in the volume of the solar cell. It allows more than triple increase of infrared photovoltaic absorption.

  10. Thermodynamics of photon-enhanced thermionic emission solar cells

    SciTech Connect (OSTI)

    Reck, Kasper, E-mail: kasper.reck@nanotech.dtu.dk [Department of Micro- and Nanotechnology, Technical University of Denmark, DTU Nanotech Building 345E, Kgs. Lyngby 2800 (Denmark); Hansen, Ole, E-mail: ole.hansen@nanotech.dtu.dk [Department of Micro- and Nanotechnology, Technical University of Denmark, DTU Nanotech Building 345E, Kgs. Lyngby 2800 (Denmark); CINF Center for Individual Nanoparticle Functionality, Technical University of Denmark, Kgs. Lyngby 2800 (Denmark)

    2014-01-13T23:59:59.000Z

    Photon-enhanced thermionic emission (PETE) cells in which direct photon energy as well as thermal energy can be harvested have recently been suggested as a new candidate for high efficiency solar cells. Here, we present an analytic thermodynamical model for evaluation of the efficiency of PETE solar cells including an analysis of the entropy production due to thermionic emission of general validity. The model is applied to find the maximum efficiency of a PETE cell for given cathode and anode work functions and temperatures.

  11. Mode Splitting for Efficient Plasmoinc Thin-film Solar Cell

    E-Print Network [OSTI]

    Li, Tong; Jiang, Chun

    2010-01-01T23:59:59.000Z

    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.

  12. Fabrication and Characterization of Organic Solar Cells

    E-Print Network [OSTI]

    Yengel, Emre

    2010-01-01T23:59:59.000Z

    processable polymer photovoltaic cells by self?organization Photodiodes,  and  Photovoltaic  Cells.   Applied Physics F,  Heeger  AJ.   Polymer  Photovoltaic  Cells  ?  Enhanced 

  13. Fabrication and Characterization of Organic Solar Cells

    E-Print Network [OSTI]

    Yengel, Emre

    2010-01-01T23:59:59.000Z

    AJ. Polymer Photovoltaic Cells - Enhanced Efficiencies Via afor high-efficiency polymer photovoltaic cells usingfactors. The photovoltaic power conversion efficiency (?) [

  14. California: TetraCell Silicon Solar Cell Improves Efficiency...

    Energy Savers [EERE]

    at the SunShot Grand Challenge Summit in Denver, Colorado. | Photo by John De La Rosa. Solar Companies Go for the Gold with SunShot Incubator The Story of a Cutting-Edge Solar...

  15. The mission of the UC Davis Solar Collaborative is simple: to find ways to make solar cells more efficient. Even in theory, the efficiency of conventional solar cells is limited to a disappointing 31%. However, this limit is based

    E-Print Network [OSTI]

    Mission The mission of the UC Davis Solar Collaborative is simple: to find ways to make solar cells more efficient. Even in theory, the efficiency of conventional solar cells is limited to a disappointing 31%. However, this limit is based on the traditional operation of solar cells, where an incoming

  16. Development of an electronic device quality aluminum antimonide (AlSb) semiconductor for solar cell applications

    DOE Patents [OSTI]

    Sherohman, John W; Yee, Jick Hong; Combs, III, Arthur W

    2014-11-11T23:59:59.000Z

    Electronic device quality Aluminum Antimonide (AlSb)-based single crystals produced by controlled atmospheric annealing are utilized in various configurations for solar cell applications. Like that of a GaAs-based solar cell devices, the AlSb-based solar cell devices as disclosed herein provides direct conversion of solar energy to electrical power.

  17. Identification, Characterization, and Implications of Shadow Degradation in Thin Film Solar Cells

    E-Print Network [OSTI]

    Alam, Muhammad A.

    cells [4]. The problem of shadowing of solar panels has been studied for quite some time; however of a solar cell, showing the dark and light current components. (b) The series connection in a solar panelIdentification, Characterization, and Implications of Shadow Degradation in Thin Film Solar Cells

  18. Modeling of dual-metal Schottky contacts based silicon micro and nano wire solar cells

    E-Print Network [OSTI]

    Anantaram, M. P.

    Modeling of dual-metal Schottky contacts based silicon micro and nano wire solar cells M. Golam Work function Lifetime Diffusion length Interdigitated solar cell a b s t r a c t We study solar cell nanowires and nanotubes are considered to be potential candidates for low cost and high efficiency solar

  19. NREL scientists develop near-field optical microscopy techniques for imaging solar cell junctions and identify

    E-Print Network [OSTI]

    Solar cell producers are facing urgent pressures to lower module production cost.This achievementNREL scientists develop near-field optical microscopy techniques for imaging solar cell junctions is an increasingly important issue for silicon solar cells. The issue has taken center stage now that the solar

  20. Plasmonic Enhancement of Dye-Sensitized Solar Cells Using Core-Shell-Shell Nanostructures

    E-Print Network [OSTI]

    Plasmonic Enhancement of Dye-Sensitized Solar Cells Using Core- Shell-Shell Nanostructures Stafford and demonstrate near-field plasmonic enhancement of dye-sensitized solar cells (DSSCs) incorporating them being researched, dye-sensitized solar cells (DSSCs) are a promising alternative to traditional solar

  1. Dye-Sensitized Solar Cells DOI: 10.1002/anie.201300070

    E-Print Network [OSTI]

    Dye-Sensitized Solar Cells DOI: 10.1002/anie.201300070 Stable Dye-Sensitized Solar Cell,* and Udo Bach* Dye-sensitized solar cells (DSCs) can be fabricated from low- cost components with simple fields, including renewable energy research focusing on DSCs and solar-driven hydrogen generation from

  2. Electronic structure of QD arrays: Application to intermediate-band solar cells

    E-Print Network [OSTI]

    )Department of Chemistry, University of Warwick, Coventry CV4 7AL, UK Abstract-Intermediate band solar cells (IBSC) have the thermodynamic efficiency limits of solar energy conversion. While tandem solar cells can the- oretically exceedNUSOD 2007 Electronic structure of QD arrays: Application to intermediate-band solar cells S

  3. Lead selenide nanowire solar cells via LPNE and its new found derivatives

    E-Print Network [OSTI]

    Hujdic, Justin

    2012-01-01T23:59:59.000Z

    Abstract of the Dissertation Lead selenide nanowire solarOF CALIFORNIA, MERCED Lead selenide nanowire solar cells viatrapping…………………………………………………………16 2. Lead Selenide Nanowires

  4. Enabling Thin Silicon Solar Cell Technology

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    effort to shift U.S. energy reliance from fossil fuels to renewable sources has spurred companies to reduce the cost and increase the reliability of their solar photovoltaics...

  5. Method Of Making Solar Collectors By In-Situ Encapsulation Of Solar Cells

    DOE Patents [OSTI]

    Carrie, Peter J. (Toronto, CA); Chen, Kingsley D. D. (Markham, CA)

    2000-10-24T23:59:59.000Z

    A method of making solar collectors by encapsulating photovoltaic cells within a base of an elongated solar collector wherein heat and pressure are applied to the cells in-situ, after an encapsulating material has been applied. A tool is fashioned having a bladder expandable under gas pressure, filling a region of the collector where the cells are mounted. At the same time, negative pressure is applied outside of the bladder, enhancing its expansion. The bladder presses against a platen which contacts the encapsulated cells, causing outgassing of the encapsulant, while heat cures the encapsulant. After curing, the bladder is deflated and the tool may be removed from the collector and base and reflective panels put into place, if not already there, thereby allowing the solar collector to be ready for use.

  6. Thin film solar cell configuration and fabrication method

    DOE Patents [OSTI]

    Menezes, Shalini

    2009-07-14T23:59:59.000Z

    A new photovoltaic device configuration based on an n-copper indium selenide absorber and a p-type window is disclosed. A fabrication method to produce this device on flexible or rigid substrates is described that reduces the number of cell components, avoids hazardous materials, simplifies the process steps and hence the costs for high volume solar cell manufacturing.

  7. IMPLEMENTATION OF PLANARIZING LAYERS IN TANDEM SOLAR CELLS Hamed Achour

    E-Print Network [OSTI]

    Candea, George

    °C H2 and CO2 Plasma treatment of deposited films Characterization: Transmittance, FTIR, SEM properties were found to be dependent on temperature. Good top cell surface planarization was observed temperature for application as an intermediate reflector (ZIR) in micromorph solar cells The ZIR layer should

  8. Laminated photovoltaic modules using back-contact solar cells

    DOE Patents [OSTI]

    Gee, James M. (Albuquerque, NM); Garrett, Stephen E. (Albuquerque, NM); Morgan, William P. (Albuquerque, NM); Worobey, Walter (Albuquerque, NM)

    1999-09-14T23:59:59.000Z

    Photovoltaic modules which comprise back-contact solar cells, such as back-contact crystalline silicon solar cells, positioned atop electrically conductive circuit elements affixed to a planar support so that a circuit capable of generating electric power is created. The modules are encapsulated using encapsulant materials such as EVA which are commonly used in photovoltaic module manufacture. The module designs allow multiple cells to be electrically connected in a single encapsulation step rather than by sequential soldering which characterizes the currently used commercial practices.

  9. Three dimensional amorphous silicon/microcrystalline silicon solar cells

    DOE Patents [OSTI]

    Kaschmitter, J.L.

    1996-07-23T23:59:59.000Z

    Three dimensional deep contact amorphous silicon/microcrystalline silicon (a-Si/{micro}c-Si) solar cells are disclosed which use deep (high aspect ratio) p and n contacts to create high electric fields within the carrier collection volume material of the cell. The deep contacts are fabricated using repetitive pulsed laser doping so as to create the high aspect p and n contacts. By the provision of the deep contacts which penetrate the electric field deep into the material where the high strength of the field can collect many of the carriers, thereby resulting in a high efficiency solar cell. 4 figs.

  10. Three dimensional amorphous silicon/microcrystalline silicon solar cells

    DOE Patents [OSTI]

    Kaschmitter, James L. (Pleasanton, CA)

    1996-01-01T23:59:59.000Z

    Three dimensional deep contact amorphous silicon/microcrystalline silicon (a-Si/.mu.c-Si) solar cells which use deep (high aspect ratio) p and n contacts to create high electric fields within the carrier collection volume material of the cell. The deep contacts are fabricated using repetitive pulsed laser doping so as to create the high aspect p and n contacts. By the provision of the deep contacts which penetrate the electric field deep into the material where the high strength of the field can collect many of the carriers, thereby resulting in a high efficiency solar cell.

  11. Investigation of the Role of Trap States in Solar Cell Reliability using Photothermal Deflection Spectroscopy

    E-Print Network [OSTI]

    Bezryadina, Anna Sergeyevna

    2012-01-01T23:59:59.000Z

    as coal or oil. The photovoltaic cells which constitute mostand conventional inorganic photovoltaic cells is that lightand Characterization Photovoltaic (PV) cells convert solar

  12. Core-Shell Nanopillar Array Solar Cells using Cadmium Sulfide Coating on Indium Phosphide Nanopillars

    E-Print Network [OSTI]

    Tu, Bor-An Clayton

    2013-01-01T23:59:59.000Z

    for efficient photovoltaic cells. ,” Nature Nanotechnology,Part II – Photovoltaic Cell I-V Characterization Theory andof the photovoltaic effect in the 19 th century, solar cells

  13. Antireflection and SiO2 Surface Passivation by Liquid-Phase Chemistry for Efficient Black Silicon Solar Cells: Preprint

    SciTech Connect (OSTI)

    Yuan, H. C.; Oh, J.; Zhang, Y.; Kuznetsov, O. A.; Flood, D. J.; Branz, H. M.

    2012-06-01T23:59:59.000Z

    We report solar cells with both black Si antireflection and SiO2 surface passivation provided by inexpensive liquid-phase chemistry, rather than by conventional vacuum-based techniques. Preliminary cell efficiency has reached 16.4%. Nanoporous black Si antireflection on crystalline Si by aqueous etching promises low surface reflection for high photon utilization, together with lower manufacturing cost compared to vacuum-based antireflection coating. Ag-nanoparticle-assisted black Si etching and post-etching chemical treatment recently developed at NREL enables excellent control over the pore diameter and pore separation. Performance of black Si solar cells, including open-circuit voltage, short-circuit current density, and blue response, has benefited from these improvements. Prior to this study, our black Si solar cells were all passivated by thermal SiO2 produced in tube furnaces. Although this passivation is effective, it is not yet ideal for ultra-low-cost manufacturing. In this study, we report, for the first time, the integration of black Si with a proprietary liquid-phase deposition (LPD) passivation from Natcore Technology. The Natcore LPD forms a layer of <10-nm SiO2 on top of the black Si surface in a relatively mild chemical bath at room temperature. We demonstrate black Si solar cells with LPD SiO2 with a spectrum-weighted average reflection lower than 5%, similar to the more costly thermally grown SiO2 approach. However, LPD SiO2 provides somewhat better surface-passivation quality according to the lifetime analysis by the photo-conductivity decay measurement. Moreover, black Si solar cells with LPD SiO2 passivation exhibit higher spectral response at short wavelength compared to those passivated by thermally grown SiO2. With further optimization, the combination of aqueous black Si etching and LPD could provide a pathway for low-cost, high-efficiency crystalline Si solar cells.

  14. Single nanowire solar cells beyond the Shockley-Queisser limit

    E-Print Network [OSTI]

    Krogstrup, Peter; Heiss, Martin; Demichel, Olivier; Holm, Jeppe V; Aagesen, Martin; Nygard, Jesper; Morral, Anna Fontcuberta i

    2013-01-01T23:59:59.000Z

    Light management is of great importance to photovoltaic cells, as it determines the fraction of incident light entering the device. An optimal pn-junction combined with an optimal light absorption can lead to a solar cell efficiency above the Shockley-Queisser limit. Here, we show how this is possible by studying photocurrent generation for a single core-shell p-i-n junction GaAs nanowire solar cell grown on a silicon substrate. At one sun illumination a short circuit current of 180 mA/cm^2 is obtained, which is more than one order of magnitude higher than what would be predicted from Lambert-Beer law. The enhanced light absorption is shown to be due to a light concentrating property of the standing nanowire as shown by photocurrent maps of the device. The results imply new limits for the maximum efficiency obtainable with III-V based nanowire solar cells under one sun illumination.

  15. Collective behavior of semiconductor nanoparticles for use in solar energy harvesting

    E-Print Network [OSTI]

    Shcherbatyuk, Georgiy

    2012-01-01T23:59:59.000Z

    and B. P. Wittmershaus, Solar Energy 83, 566 (2009). [33].in luminescence for solar energy utilization,” Opt. Mater.and W. Greubel, "Solar Energy Conversion with. Fluorescent

  16. Solar-Hydrogen Fuel-Cell Vehicles

    E-Print Network [OSTI]

    DeLuchi, Mark A.; Ogden, Joan M.

    1993-01-01T23:59:59.000Z

    nosulfur. fA methanol/fuel-cell vehicle wouldhaveno tailpipeanalysis of fuel cell vehicles using methanol and hy- drogenused fuel-cell vehicles and (d) biomass-derived methanol

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

    E-Print Network [OSTI]

    Atwater, Harry

    INCREASED CELL EFFICIENCY IN InGaAs THIN FILM SOLAR CELLS WITH DIELECTRIC AND METAL BACK REFLECTORS solar cells enable very high photovoltaic efficiencies by virtue of employing different band gap materials in series- connected tandem cells to access the full solar spectrum. Researchers focused

  18. Study of surface enhanced resonant Raman spectroscopy of chromophores on unaggregated plasmonically active nanoparticles / Surface-enhanced Raman study of the interaction of the PEDOT:PSS and P3HT/PCBM components of organic polymer solar cells with plasmonically active nanoparticles

    E-Print Network [OSTI]

    Stavytska-Barba, Marina Valeriyivna

    2012-01-01T23:59:59.000Z

    of Organic Photovoltaic Efficiency in Tandem Cells ofinfluencing the photovoltaic efficiency. Thus, the firstCarroll, D. L. High-Efficiency Photovoltaic Devices Based on

  19. Solar Energy Materials & Solar Cells 91 (2007) 924930 Plasma-enhanced chemical vapor deposition of zinc oxide at

    E-Print Network [OSTI]

    Hicks, Robert F.

    2007-01-01T23:59:59.000Z

    Solar Energy Materials & Solar Cells 91 (2007) 924­930 Plasma-enhanced chemical vapor deposition (CIGS) or plastic substrates [1,2,8]. In this paper, we report on the deposition of aluminum- doped zinc

  20. High-efficiency solar cell and method for fabrication

    DOE Patents [OSTI]

    Hou, H.Q.; Reinhardt, K.C.

    1999-08-31T23:59:59.000Z

    A high-efficiency 3- or 4-junction solar cell is disclosed with a theoretical AM0 energy conversion efficiency of about 40%. The solar cell includes p-n junctions formed from indium gallium arsenide nitride (InGaAsN), gallium arsenide (GaAs) and indium gallium aluminum phosphide (InGaAlP) separated by n-p tunnel junctions. An optional germanium (Ge) p-n junction can be formed in the substrate upon which the other p-n junctions are grown. The bandgap energies for each p-n junction are tailored to provide substantially equal short-circuit currents for each p-n junction, thereby eliminating current bottlenecks and improving the overall energy conversion efficiency of the solar cell. Additionally, the use of an InGaAsN p-n junction overcomes super-bandgap energy losses that are present in conventional multi-junction solar cells. A method is also disclosed for fabricating the high-efficiency 3- or 4-junction solar cell by metal-organic chemical vapor deposition (MOCVD). 4 figs.

  1. High-efficiency solar cell and method for fabrication

    DOE Patents [OSTI]

    Hou, Hong Q. (Albuquerque, NM); Reinhardt, Kitt C. (Albuquerque, NM)

    1999-01-01T23:59:59.000Z

    A high-efficiency 3- or 4-junction solar cell is disclosed with a theoretical AM0 energy conversion efficiency of about 40%. The solar cell includes p-n junctions formed from indium gallium arsenide nitride (InGaAsN), gallium arsenide (GaAs) and indium gallium aluminum phosphide (InGaAlP) separated by n-p tunnel junctions. An optional germanium (Ge) p-n junction can be formed in the substrate upon which the other p-n junctions are grown. The bandgap energies for each p-n junction are tailored to provide substantially equal short-circuit currents for each p-n junction, thereby eliminating current bottlenecks and improving the overall energy conversion efficiency of the solar cell. Additionally, the use of an InGaAsN p-n junction overcomes super-bandgap energy losses that are present in conventional multi-junction solar cells. A method is also disclosed for fabricating the high-efficiency 3- or 4-junction solar cell by metal-organic chemical vapor deposition (MOCVD).

  2. Structured SWNTs and Graphene for Solar Cells Kehang Cui, Takaaki Chiba, Xiao Chen, Shohei Chiashi and Shigeo Maruyama*

    E-Print Network [OSTI]

    Maruyama, Shigeo

    of heterojunction solar cells and dye-sensitized solar cells (DSSCs). The structure of SWNTs was controlled nanotubes, Micro-honeycomb, SWNT-Si solar cell, Dye-sensitized solar cell, Graphene 1. Introduction Single and structural simplicity. Dye-sensitized solar cells (DSSCs)6 have the advantages of relatively high PCE values

  3. Influence of solar heating on the performance of integrated solar cell microstrip patch antennas

    SciTech Connect (OSTI)

    Roo-Ons, M.J.; Shynu, S.V.; Ammann, M.J. [Antenna and High Frequency Research Centre, School of Electronic and Communications Engineering, Dublin Institute of Technology (Ireland); Seredynski, M. [Institute of Heat Engineering, Warsaw University of Technology (Poland); McCormack, S.J. [Dept. of Civil, Structural and Environmental Engineering, Trinity College Dublin (Ireland); Norton, B. [Dublin Energy Lab., Focas Institute, Dublin Institute of Technology (Ireland)

    2010-09-15T23:59:59.000Z

    The integration of microstrip patch antennas with photovoltaics has been proposed for applications in autonomous wireless communication systems located on building facades. Full integration was achieved using polycrystalline silicon solar cells as both antenna ground plane and direct current power generation in the same device. An overview of the proposed photovoltaic antenna designs is provided and the variation characterised of the electromagnetic properties of the device with temperature and solar radiation. Measurements for both copper and solar antennas are reported on three different commercial laminates with contrasting values for thermal coefficient of the dielectric constant. (author)

  4. Upside-Down Solar Cell Achieves Record Efficiencies (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2010-12-01T23:59:59.000Z

    The inverted metamorphic multijunction (IMM) solar cell is an exercise in efficient innovation - literally, as the technology boasted the highest demonstrated efficiency for converting sunlight into electrical energy at its debut in 2005. Scientists at the National Renewable Energy Laboratory (NREL) inverted the conventional photovoltaic (PV) structure to revolutionary effect, achieving solar conversion efficiencies of 33.8% and 40.8% under one-sun and concentrated conditions, respectively.

  5. Method of making quasi-grain boundary-free polycrystalline solar cell structure and solar cell structure obtained thereby

    DOE Patents [OSTI]

    Gonzalez, Franklin N. (Gainesville, FL); Neugroschel, Arnost (Gainesville, FL)

    1984-02-14T23:59:59.000Z

    A new solar cell structure is provided which will increase the efficiency of polycrystalline solar cells by suppressing or completely eliminating the recombination losses due to the presence of grain boundaries. This is achieved by avoiding the formation of the p-n junction (or other types of junctions) in the grain boundaries and by eliminating the grain boundaries from the active area of the cell. This basic concept can be applied to any polycrystalline material; however, it will be most beneficial for cost-effective materials having small grains, including thin film materials.

  6. Electron Transfer Dynamics in Efficient Molecular Solar Cells

    SciTech Connect (OSTI)

    Meyer, Gerald John

    2014-10-01T23:59:59.000Z

    This research provided new mechanistic insights into surface mediated photochemical processes relevant to solar energy conversion. In this past three years our research has focused on oxidation photo-redox chemistry and on the role surface electric fields play on basic spectroscopic properties of molecular-semiconductor interfaces. Although this research as purely fundamental science, the results and their interpretation have relevance to applications in dye sensitized and photogalvanic solar cells as well as in the storage of solar energy in the form of chemical bonds.

  7. Method of making a back contacted solar cell

    DOE Patents [OSTI]

    Gee, J.M.

    1995-11-21T23:59:59.000Z

    A back-contacted solar cell is described having laser-drilled vias connecting the front-surface carrier-collector junction to an electrode grid on the back surface. The structure may also include a rear surface carrier-collector junction connected to the same grid. The substrate is connected to a second grid which is interdigitated with the first. Both grids are configured for easy series connection with neighboring cells. Several processes are disclosed to produce the cell. 2 figs.

  8. Method of making a back contacted solar cell

    DOE Patents [OSTI]

    Gee, James M. (Albuquerque, NM)

    1995-01-01T23:59:59.000Z

    A back-contacted solar cell having laser-drilled vias connecting the front-surface carrier-collector junction to an electrode grid on the back surface. The structure may also include a rear surface carrier-collector junction connected to the same grid. The substrate is connected to a second grid which is interdigitated with the first. Both grids are configured for easy series connection with neighboring cells. Several processes are disclosed to produce the cell.

  9. Comparing matched polymer:Fullerene solar cells made by solution-sequential processing and traditional blend casting: Nanoscale structure and device performance

    E-Print Network [OSTI]

    2014-01-01T23:59:59.000Z

    Bulk Heterojunction Solar Cells. J. Phys. Chem. C 2014, 118,Polythiophene:Fullerene Solar Cells. Phys. Rev. B 2008, 78,Polymer: Fullerene Solar Cells Using the External Quantum

  10. Dust Detection by the Wave Instrument on STEREO: Nanoparticles Picked up by the Solar Wind?

    E-Print Network [OSTI]

    2009-01-01T23:59:59.000Z

    including the large solar panels which contribute to amaterial, kap- ton, solar panel mylar, and a few metallic

  11. Investigation of the Role of Trap States in Solar Cell Reliability using Photothermal Deflection Spectroscopy

    E-Print Network [OSTI]

    Bezryadina, Anna Sergeyevna

    2012-01-01T23:59:59.000Z

    was achieved by First Solar company in 2011 (Figure 1.3).future solar cells by providing information to PV companies,companies can eliminate degradation process and ensure stability. Different solar

  12. Optimized scalable stack of fluorescent solar concentrator systems with bifacial silicon solar cells

    SciTech Connect (OSTI)

    Martínez Díez, Ana Luisa, E-mail: a.martinez@itma.es [Fundación ITMA, Parque Empresarial Principado de Asturias, C/Calafates, Parcela L-3.4, 33417 Avilés (Spain); Fraunhofer Institute for Solar Energy Systems ISE, Heidenhofstr. 2, 79110 Freiburg (Germany); Gutmann, Johannes; Posdziech, Janina; Rist, Tim; Goldschmidt, Jan Christoph [Fraunhofer Institute for Solar Energy Systems ISE, Heidenhofstr. 2, 79110 Freiburg (Germany); Plaza, David Gómez [Fundación ITMA, Parque Empresarial Principado de Asturias, C/Calafates, Parcela L-3.4, 33417 Avilés (Spain)

    2014-10-21T23:59:59.000Z

    In this paper, we present a concentrator system based on a stack of fluorescent concentrators (FCs) and a bifacial solar cell. Coupling bifacial solar cells to a stack of FCs increases the performance of the system and preserves its efficiency when scaled. We used an approach to optimize a fluorescent solar concentrator system design based on a stack of multiple fluorescent concentrators (FC). Seven individual fluorescent collectors (20 mm×20 mm×2 mm) were realized by in-situ polymerization and optically characterized in regard to their ability to guide light to the edges. Then, an optimization procedure based on the experimental data of the individual FCs was carried out to determine the stack configuration that maximizes the total number of photons leaving edges. Finally, two fluorescent concentrator systems were realized by attaching bifacial silicon solar cells to the optimized FC stacks: a conventional system, where FC were attached to one side of the solar cell as a reference, and the proposed bifacial configuration. It was found that for the same overall FC area, the bifacial configuration increases the short-circuit current by a factor of 2.2, which is also in agreement with theoretical considerations.

  13. N-PERT BACK JUNCTION SOLAR CELLS: AN OPTION FOR THE NEXT INDUSTRIAL TECHNOLOGY GENERATION?

    E-Print Network [OSTI]

    are introducing a new solar cell design: the Passivated Emitter and Rear Cell (PERC), which features a full-PERT (Passivated Emitter, Rear Totally Diffused) solar cells with a processing sequence based on an industrialN-PERT BACK JUNCTION SOLAR CELLS: AN OPTION FOR THE NEXT INDUSTRIAL TECHNOLOGY GENERATION? Bianca

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

    E-Print Network [OSTI]

    Sites, James R.

    -film polycrystalline solar cells, such as CdTe and CIGS, and the overall performance of these cells. LBIC is uniquelyLBIC 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

  15. Polyx multicrystalline silicon solar cells processed by PF+5 unanalysed ion implantation and rapid thermal annealing

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    695 Polyx multicrystalline silicon solar cells processed by PF+5 unanalysed ion implantation of terrestrial solar cells as compared to classical furnace or pulsed laser annealing. Unfortunately, drawbacks for the fabrication of solar cells. It offers the possibility of achieving strong reduction of cell cost in spite

  16. innovati nAward-Winning Etching Process Cuts Solar Cell Costs

    E-Print Network [OSTI]

    innovati nAward-Winning Etching Process Cuts Solar Cell Costs In general, when it comes to photovoltaic (PV) solar cells, the higher their efficiency, the higher their price tag. To increase cell-efficiency crystalline silicon solar cells based on an innovative antireflection approach that promises to significantly

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

    E-Print Network [OSTI]

    Atwater, Harry

    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 crystalline silicon solar cells of up to 205% from = 300nm to 1100nm compared to a planar cell

  18. Light-trapping in dye-sensitized solar cells Stephen Foster* and Sajeev John

    E-Print Network [OSTI]

    John, Sajeev

    Light-trapping in dye-sensitized solar cells Stephen Foster* and Sajeev John We demonstrate numerically that photonic crystal dye-sensitized solar cells (DSSCs) can provide at least a factor of one researched is the dye-sensitized solar cell (DSSC). These cells are inexpensive to make and boast power

  19. Preprint 24th EU PVSEC, 2009, Hamburg FITTING OF LATERAL RESISTANCES IN SILICON SOLAR CELLS

    E-Print Network [OSTI]

    Junk, Michael

    Preprint 24th EU PVSEC, 2009, Hamburg FITTING OF LATERAL RESISTANCES IN SILICON SOLAR CELLS cell from electroluminescence (EL) is introduced. A two-dimensional model of the solar cell screen printed monocrystalline silicon solar cell are shown and the influence of lateral diffusion

  20. 17.1%-Efficient Multi-Scale-Textured Black Silicon Solar Cells without Dielectric Antireflection Coating: Preprint

    SciTech Connect (OSTI)

    Toor, F.; Page, M. R.; Branz, H. M.; Yuan, H. C.

    2011-07-01T23:59:59.000Z

    In this work we present 17.1%-efficient p-type single crystal Si solar cells with a multi-scale-textured surface and no dielectric antireflection coating. Multi-scale texturing is achieved by a gold-nanoparticle-assisted nanoporous etch after conventional micron scale KOH-based pyramid texturing (pyramid black etching). By incorporating geometric enhancement of antireflection, this multi-scale texturing reduces the nanoporosity depth required to make silicon 'black' compared to nanoporous planar surfaces. As a result, it improves short-wavelength spectral response (blue response), previously one of the major limiting factors in 'black-Si' solar cells. With multi-scale texturing, the spectrum-weighted average reflectance from 350- to 1000-nm wavelength is below 2% with a 100-nm deep nanoporous layer. In comparison, roughly 250-nm deep nanopores are needed to achieve similar reflectance on planar surface. Here, we characterize surface morphology, reflectivity and solar cell performance of the multi-scale textured solar cells.

  1. New approaches for high-efficiency solar cells. Final report

    SciTech Connect (OSTI)

    Bedair, S.M.; El-Masry, N.A. [North Carolina State Univ., Raleigh, NC (United States)

    1997-12-01T23:59:59.000Z

    This report summarizes the activities carried out in this subcontract. These activities cover, first the atomic layer epitaxy (ALE) growth of GaAs, AlGaAs and InGaP at fairly low growth temperatures. This was followed by using ALE to achieve high levels of doping both n-type and p-type required for tunnel junctions (Tj) in the cascade solar cell structures. Then the authors studied the properties of AlGaAs/InGaP and AlGaAs/GaAs tunnel junctions and their performances at different growth conditions. This is followed by the use of these tunnel junctions in stacked solar cell structures. The effect of these tunnel junctions on the performance of stacked solar cells was studied at different temperatures and different solar fluences. Finally, the authors studied the effect of different types of black surface fields (BSF), both p/n and n/p GaInP solar cell structures, and their potential for window layer applications. Parts of these activities were carried in close cooperation with Dr. Mike Timmons of the Research Triangle Institute.

  2. Broadband absorption enhancement in ultra-thin crystalline Si solar cells by incorporating metallic and dielectric nanostructures in the back reflector

    E-Print Network [OSTI]

    Jain, Samart; Miljkovic, Vladimir D; Dmitriev, Alexamder; Trompoukis, Christos; Gordon, Ivan; van Dorpe, Pol; Daif, Ounsi El

    2013-01-01T23:59:59.000Z

    We propose a back-reflecting scheme in order to enhance the maximum achievable current in one micron thick crystalline silicon solar cells. We perform 3-dimensional numerical investigations of the scattering properties of metallic nanostructures located at the back side, and optimize them for enhancing absorption in the silicon layer. We validate our numerical results experimentally and also compare the absorption enhancement in the solar cell structure, both with quasi-periodic and random metallic nanostructures. We have looked at the interplay between the metallic nanostructures and an integrated back-reflector. We show that the combination of metallic nanoparticles and a metallic reflector results in significant parasitic absorption. We compared this to another implementation based on titanium dioxide nanoparticles which act as a lambertian reflector of light. Our simulation and experimental results show that this proposed configuration results in reduced absorption losses and in broadband enhancement of a...

  3. Fabrication of solar cells with counter doping prevention

    DOE Patents [OSTI]

    Dennis, Timothy D; Li, Bo; Cousins, Peter John

    2013-02-19T23:59:59.000Z

    A solar cell fabrication process includes printing of dopant sources over a polysilicon layer over backside of a solar cell substrate. The dopant sources are cured to diffuse dopants from the dopant sources into the polysilicon layer to form diffusion regions, and to crosslink the dopant sources to make them resistant to a subsequently performed texturing process. To prevent counter doping, dopants from one of the dopant sources are prevented from outgassing and diffusing into the other dopant source. For example, phosphorus from an N-type dopant source is prevented from diffusing to a P-type dopant source comprising boron.

  4. Thin film solar cell including a spatially modulated intrinsic layer

    DOE Patents [OSTI]

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

    1989-03-28T23:59:59.000Z

    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.

  5. Process Development for High Voc CdTe Solar Cells

    SciTech Connect (OSTI)

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

    2011-05-01T23:59:59.000Z

    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.

  6. Copper doped polycrystalline silicon solar cell

    DOE Patents [OSTI]

    Lovelace, Alan M. Administrator of the National Aeronautics and Space (La Canada, CA); Koliwad, Krishna M. (La Canada, CA); Daud, Taher (La Crescenta, CA)

    1981-01-01T23:59:59.000Z

    Photovoltaic cells having improved performance are fabricated from polycrystalline silicon containing copper segregated at the grain boundaries.

  7. Moon's Radiation Environment and Expected Performance of Solar Cells during Future Lunar Missions

    E-Print Network [OSTI]

    T. E Girish; S Aranya

    2010-12-03T23:59:59.000Z

    Several lunar missions are planned ahead and there is an increasing demand for efficient photovoltaic power generation in the moon. The knowledge of solar cell operation in the lunar surface obtained during early seventies need to be updated considering current views on solar variability and emerging space solar cell technologies. In this paper some aspects of the solar cell performance expected under variable lunar radiation environment during future space missions to moon are addressed. We have calculated relative power expected from different types of solar cells under extreme solar proton irradiation conditions and high lunar daytime temperature. It is also estimated that 2-3 % of annual solar cell degradation is most probable during the future lunar missions. We have also discussed photovoltaic power generation in long term lunar bases emphasizing technological needs such as sunlight concentration, solar cell cooling and magnetic shielding of radiation for improving the efficiency of solar cells in the lunar environment.

  8. Moon's Radiation Environment and Expected Performance of Solar Cells during Future Lunar Missions

    E-Print Network [OSTI]

    Girish, T E

    2010-01-01T23:59:59.000Z

    Several lunar missions are planned ahead and there is an increasing demand for efficient photovoltaic power generation in the moon. The knowledge of solar cell operation in the lunar surface obtained during early seventies need to be updated considering current views on solar variability and emerging space solar cell technologies. In this paper some aspects of the solar cell performance expected under variable lunar radiation environment during future space missions to moon are addressed. We have calculated relative power expected from different types of solar cells under extreme solar proton irradiation conditions and high lunar daytime temperature. It is also estimated that 2-3 % of annual solar cell degradation is most probable during the future lunar missions. We have also discussed photovoltaic power generation in long term lunar bases emphasizing technological needs such as sunlight concentration, solar cell cooling and magnetic shielding of radiation for improving the efficiency of solar cells in the l...

  9. SIMULATION OF GEOMETRY AND SHADOW EFFECTS IN 3D ORGANIC POLYMER SOLAR CELLS

    E-Print Network [OSTI]

    Kassegne, Samuel Kinde

    levels of Solar panels and new production capacity is driving solar PV prices lower and thereby, bringingSIMULATION OF GEOMETRY AND SHADOW EFFECTS IN 3D ORGANIC POLYMER SOLAR CELLS OF THE THESIS Simulation of Geometry and Shadow Effects in 3D Organic Polymer Solar Cells by Mihir Prakashbhai

  10. Probing the Electronic Structure of a Photoexcited Solar Cell Dye with Transient X-ray Absorption Spectroscopy

    E-Print Network [OSTI]

    Kuiken, Benjamin E. Van

    2014-01-01T23:59:59.000Z

    Pettersson, H.Dye-Sensitized Solar Cells Chem. Rev. 2010,Photo-Sensitizers in Grätzel Solar Cells: Quantum-ChemicalSensitizing Dyes in Solar Cells J. Phys. Chem. C 2008, 113,

  11. Band Gap Energy of Chalcopyrite Thin Film Solar Cell Absorbers Determined by Soft X-Ray Emission and Absorption Spectroscopy

    E-Print Network [OSTI]

    Bar, M.

    2010-01-01T23:59:59.000Z

    8] J.R. Tuttle et al. , Solar Cells 30, 21 (1991). [9] D.OF CHALCOPYRITE THIN FILM SOLAR CELL ABSORBERS DETERMINED BYchalcopyrite thin film solar cell absorbers significantly

  12. Substrate for thin silicon solar cells

    DOE Patents [OSTI]

    Ciszek, Theodore F. (Evergreen, CO)

    1995-01-01T23:59:59.000Z

    A photovoltaic device for converting solar energy into electrical signals comprises a substrate, a layer of photoconductive semiconductor material grown on said substrate, wherein the substrate comprises an alloy of boron and silicon, the boron being present in a range of from 0.1 to 1.3 atomic percent, the alloy having a lattice constant substantially matched to that of the photoconductive semiconductor material and a resistivity of less than 1.times.10.sup.-3 ohm-cm.

  13. Substrate for thin silicon solar cells

    DOE Patents [OSTI]

    Ciszek, T.F.

    1995-03-28T23:59:59.000Z

    A photovoltaic device for converting solar energy into electrical signals comprises a substrate, a layer of photoconductive semiconductor material grown on said substrate, wherein the substrate comprises an alloy of boron and silicon, the boron being present in a range of from 0.1 to 1.3 atomic percent, the alloy having a lattice constant substantially matched to that of the photoconductive semiconductor material and a resistivity of less than 1{times}10{sup {minus}3} ohm-cm. 4 figures.

  14. Design of Zinc Oxide Based Solid-State Excitonic Solar Cell with Improved Efficiency 

    E-Print Network [OSTI]

    Lee, Tao Hua

    2012-02-14T23:59:59.000Z

    Excitonic photovoltaic devices, including organic, hybrid organic/inorganic, and dye-sensitized solar cells, are attractive alternatives to conventional inorganic solar cells due to their potential for low cost and low temperature solution...

  15. Development of low-temperature solution-processed colloidal quantum dot-based solar cells

    E-Print Network [OSTI]

    Chang, Liang-Yi, Ph. D. Massachusetts Institute of Technology

    2013-01-01T23:59:59.000Z

    Solution-processed solar cells incorporating organic semiconductors and inorganic colloidal quantum dots (QDs) are potential alternatives to conventional solar cells fabricated via vacuum or high-temperature sintering ...

  16. Effective Panchromatic Sensitization of Electrochemical Solar Cells: Strategy and Organizational Rules for Spatial Separation of

    E-Print Network [OSTI]

    -neutral sources. Dye- sensitized solar cells (DSCs), comprising chromophores, redox shuttles, and nanoporousEffective Panchromatic Sensitization of Electrochemical Solar Cells: Strategy and Organizational National Laboratory, Argonne, Illinois 60439, United States *S Supporting Information ABSTRACT: Dye-sensitized

  17. Design of Zinc Oxide Based Solid-State Excitonic Solar Cell with Improved Efficiency

    E-Print Network [OSTI]

    Lee, Tao Hua

    2012-02-14T23:59:59.000Z

    Excitonic photovoltaic devices, including organic, hybrid organic/inorganic, and dye-sensitized solar cells, are attractive alternatives to conventional inorganic solar cells due to their potential for low cost and low temperature solution...

  18. a-si solar cells: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    for the development of amorphous Si solar cells Seung May 2010 Keywords: a-Si:H Thin film Si solar cell Spectroscopic ellipsometry (SE) a b s t r a c t We Park, Byungwoo...

  19. a-si solar cell: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    for the development of amorphous Si solar cells Seung May 2010 Keywords: a-Si:H Thin film Si solar cell Spectroscopic ellipsometry (SE) a b s t r a c t We Park, Byungwoo...

  20. Optical system for determining physical characteristics of a solar cell

    DOE Patents [OSTI]

    Sopori, Bhushan L. (Denver, CO)

    2001-01-01T23:59:59.000Z

    The invention provides an improved optical system for determining the physical characteristics of a solar cell. The system comprises a lamp means for projecting light in a wide solid-angle onto the surface of the cell; a chamber for receiving the light through an entrance port, the chamber having an interior light absorbing spherical surface, an exit port for receiving a beam of light reflected substantially normal to the cell, a cell support, and an lower aperture for releasing light into a light absorbing baffle; a means for dispersing the reflection into monochromatic components; a means for detecting an intensity of the components; and a means for reporting the determination.

  1. Amorphous Siliconbased Solar Cells Xunming Deng1

    E-Print Network [OSTI]

    Schiff, Eric A.

    semiconductors proved unsuitable for making efficient cells. Handbook of Photovoltaic Science and Engineering properties; they were building on earlier work by Chittick, Sterling, and Alexander [3]. Glow discharges

  2. PhotovoltaicsPhotovoltaics: the equations for solar: the equations for solar--cell designcell design

    E-Print Network [OSTI]

    Pulfrey, David L.

    design LECTURE 5 · photovoltaic effect · the equation set · simplifying the equation set · absorption, Germany 90 MW Sarnia, Ontario 5kW Boston Massachusetts http://256.com/solar/ #12;3 The Photovoltaic EffectThe Photovoltaic EffectSec. 7.0 Is the full Device Equation Set needed to design and analyze a cell like this one

  3. Internal quantum efficiency analysis of solar cell by genetic algorithm

    SciTech Connect (OSTI)

    Xiong, Kanglin; Yang, Hui [Institute of Semiconductors, CAS, No. A35, Qing Hua East Road, Beijing 100083 (China); Suzhou Institute of Nano-tech and Nano-bionics, CAS, Ruoshui Road 398, Suzhou 215125 (China); Lu, Shulong; Zhou, Taofei; Wang, Rongxin; Qiu, Kai; Dong, Jianrong [Suzhou Institute of Nano-tech and Nano-bionics, CAS, Ruoshui Road 398, Suzhou 215125 (China); Jiang, Desheng [Institute of Semiconductors, CAS, No. A35, Qing Hua East Road, Beijing 100083 (China)

    2010-11-15T23:59:59.000Z

    To investigate factors limiting the performance of a GaAs solar cell, genetic algorithm is employed to fit the experimentally measured internal quantum efficiency (IQE) in the full spectra range. The device parameters such as diffusion lengths and surface recombination velocities are extracted. Electron beam induced current (EBIC) is performed in the base region of the cell with obtained diffusion length agreeing with the fit result. The advantage of genetic algorithm is illustrated. (author)

  4. Panoramic view of electrochemical pseudocapacitor and organic solar cell research in molecularly engineered energy materials (MEEM)

    E-Print Network [OSTI]

    2014-01-01T23:59:59.000Z

    Photodiodes from Interpenetrating Polymer Networks. NaturePolymer Solar Cells with Nanoscale Control of the Interpenetrating Network

  5. High throughput parallel backside contacting and periodic texturing for high-efficiency solar cells

    DOE Patents [OSTI]

    Daniel, Claus; Blue, Craig A.; Ott, Ronald D.

    2014-08-19T23:59:59.000Z

    Disclosed are configurations of long-range ordered features of solar cell materials, and methods for forming same. Some features include electrical access openings through a backing layer to a photovoltaic material in the solar cell. Some features include textured features disposed adjacent a surface of a solar cell material. Typically the long-range ordered features are formed by ablating the solar cell material with a laser interference pattern from at least two laser beams.

  6. Manufacturing-Friendly Advance Seen in CIGS Solar Cell Processing (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2011-05-01T23:59:59.000Z

    Scientists developed a robust, high-performance amorphous InZnO transparent contact for CIGS solar cells.

  7. Self-assembled ultra small ZnO nanocrystals for dye-sensitized solar cell application

    SciTech Connect (OSTI)

    Patra, Astam K.; Dutta, Arghya; Bhaumik, Asim, E-mail: msab@iacs.res.in

    2014-07-01T23:59:59.000Z

    We demonstrate a facile chemical approach to produce self-assembled ultra-small mesoporous zinc oxide nanocrystals using sodium salicylate (SS) as a template under hydrothermal conditions. These ZnO nanomaterials have been successfully fabricated as a photoanode for the dye-sensitized solar cell (DSSC) in the presence of N719 dye and iodine–triiodide electrolyte. The structural features, crystallinity, purity, mesophase and morphology of the nanostructure ZnO are investigated by several characterization tools. N{sub 2} sorption analysis revealed high surface areas (203 m{sup 2} g{sup ?1}) and narrow pore size distributions (5.1–5.4 nm) for different samples. The mesoporous structure and strong photoluminescence facilitates the high dye loading at the mesoscopic void spaces and light harvesting in DSSC. By utilizing this ultra-small ZnO photoelectrode with film thickness of about 7 ?m in the DSSC with an open-circuit voltage (V{sub OC}) of 0.74 V, short-circuit current density (J{sub SC}) of 3.83 mA cm{sup ?2} and an overall power conversion efficiency of 1.12% has been achieved. - Graphical abstract: Ultra-small ZnO nanocrystals have been synthesized with sodium salicylate as a template and using it as a photoanode in a dye-sensitized solar cell 1.12% power conversion efficiency has been observed. - Highlights: • Synthesis of self-assembled ultra-small mesoporous ZnO nanocrystals by using sodium salicylate as a template. • Mesoporous ZnO materials have high BET surface areas and void space. • ZnO nanoparticles serve as a photoanode for the dye-sensitized solar cell (DSSC). • Using ZnO nanocrystals as photoelectrode power conversion efficiency of 1.12% has been achieved.

  8. Photovoltaic Measurements in Single-Nanowire Silicon Solar Cells

    E-Print Network [OSTI]

    Atwater, Harry

    Photovoltaic Measurements in Single-Nanowire Silicon Solar Cells Michael D. Kelzenberg, Daniel B-voltage measurements were made under simulated Air Mass 1.5 global illumination. Photovoltaic spectral response work by our group has shown that macroscopic Si wire arrays (>1 cm2 in area) suitable for photovoltaic

  9. NREL Success Stories - Quest for Inexpensive Silicon Solar Cells

    ScienceCinema (OSTI)

    Branz, Howard

    2013-05-29T23:59:59.000Z

    Scientists at the National Renewable Energy Laboratory (NREL) share their story about a successful partnership with Oak Ridge National Laboratory and the Ampulse Corporation and how support from the US Department of Energy's Technology Commercialization & Deployment Fund has helped it and their silicon solar cell research thrive.

  10. Enhanced regeneration of degraded polymer solar cells by thermal annealing

    SciTech Connect (OSTI)

    Kumar, Pankaj, E-mail: pankaj@mail.nplindia.ernet.in [CSIR-National Physical Laboratory, Dr. K. S. Krishnan Marg, New Delhi 110012 (India); Centre for Organic Electronics, Physics, University of Newcastle, Callaghan NSW-2308 (Australia); Bilen, Chhinder; Zhou, Xiaojing; Belcher, Warwick J.; Dastoor, Paul C., E-mail: Paul.Dastoor@newcastle.edu.au [Centre for Organic Electronics, Physics, University of Newcastle, Callaghan NSW-2308 (Australia); Feron, Krishna [Centre for Organic Electronics, Physics, University of Newcastle, Callaghan NSW-2308 (Australia); CSIRO Energy Technology, P. O. Box 330, Newcastle NSW 2300 (Australia)

    2014-05-12T23:59:59.000Z

    The degradation and thermal regeneration of poly(3-hexylethiophene) (P3HT):[6,6]-phenyl-C{sub 61}-butyric acid methyl ester (PCBM) and P3HT:indene-C{sub 60} bisadduct (ICBA) polymer solar cells, with Ca/Al and Ca/Ag cathodes and indium tin oxide/poly(ethylene-dioxythiophene):polystyrene sulfonate anode have been investigated. Degradation occurs via a combination of three primary pathways: (1) cathodic oxidation, (2) active layer phase segregation, and (3) anodic diffusion. Fully degraded devices were subjected to thermal annealing under inert atmosphere. Degraded solar cells possessing Ca/Ag electrodes were observed to regenerate their performance, whereas solar cells having Ca/Al electrodes exhibited no significant regeneration of device characteristics after thermal annealing. Moreover, the solar cells with a P3HT:ICBA active layer exhibited enhanced regeneration compared to P3HT:PCBM active layer devices as a result of reduced changes to the active layer morphology. Devices combining a Ca/Ag cathode and P3HT:ICBA active layer demonstrated ?50% performance restoration over several degradation/regeneration cycles.

  11. Unraveling the Role of Morphology on Organic Solar Cell Performance

    E-Print Network [OSTI]

    Biswajit Ray; Pradeep R. Nair; Muhammad A. Alam

    2010-11-03T23:59:59.000Z

    Polymer based organic photovoltaic (OPV) technology offers a relatively inexpensive option for solar energy conversion provided its efficiency increases beyond the current level (6-7%) along with significant improvements in operational lifetime. The critical aspect of such solar cells is the complex morphology of distributed bulk heterojunctions, which plays the central role in the conversion of photo-generated excitons to electron-hole pairs. However, the fabrication conditions that can produce the optimal morphology are still unknown due to the lack of quantitative understanding of the effects of process variables on the cell morphology. In this article, we develop a unique process-device co-simulation framework based on phase-field model for phase separation coupled with self-consistent drift-diffusion transport to quantitatively explore the effects of the process conditions (e.g., annealing temperature, mixing ratio, anneal duration) on the organic solar cell performance. Our results explain experimentally observed trends of open circuit voltage and short circuit current that would otherwise be deemed anomalous from the perspective of conventional solar cells. In addition to providing an optimization framework for OPV technology, our morphology-aware modeling approach is ideally suited for a wide class of problems involving porous materials, block co-polymers, polymer colloids, OLED devices etc.

  12. Emerging High-Efficiency Low-Cost Solar Cell Technologies

    E-Print Network [OSTI]

    McGehee, Michael

    Emerging High-Efficiency Low-Cost Solar Cell Technologies Mike McGehee Materials Science and Engineering Center for Advanced Molecular Photovoltaics Bay Area Photovoltaic Consortium Precourt Institute for Energy Stanford University #12;Source: US DOE report "$1/W Photovoltaic Systems," August 2010. DOE

  13. EELE408 Photovoltaics Lecture 11: Solar Cell Parameters

    E-Print Network [OSTI]

    Kaiser, Todd J.

    mV ­ Commercial silicon solar cells 500-600 mV 11 Power & IV Curve · Power (Watts) is the rate · The power output by a source is the product of the current supplied and the voltage at which the current was supplied 12 · Power output = Source voltage x Source current ­ P=V x I (Watts = Joules/second) = (Volts

  14. Biomimetic Dye Molecules for Solar Cells

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office511041clothAdvanced Materials Advanced Materials Find Find MoreTechnicalBiomimetic Dye Molecules for Solar

  15. Collective behavior of semiconductor nanoparticles for use in solar energy harvesting

    E-Print Network [OSTI]

    Shcherbatyuk, Georgiy

    2012-01-01T23:59:59.000Z

    used it requires solar tracking and due to the limitationstracking mechanisms, further reducing operating costs for solartracking, robustness and cost of production. An alternate method of concentrating solar

  16. Intermediate-band solar cells based on quantum dot supracrystals Q. Shao and A. A. Balandina

    E-Print Network [OSTI]

    parameter in the photovoltaic PV solar cell technology. It is defined as = FFVocJsc Pin , 1 where FFIntermediate-band solar cells based on quantum dot supracrystals Q. Shao and A. A. Balandina Nano to implement the intermediate-band solar cell with the efficiency exceeding the Shockley-Queisser limit

  17. Multijunction solar cell efficiencies: effect of spectral window, optical environment and radiative

    E-Print Network [OSTI]

    Atwater, Harry

    Multijunction solar cell efficiencies: effect of spectral window, optical environment and radiative,9 The optical environment of a solar cell controls where the radiated photons from a subcell are directed*a Solar cell efficiency is maximized through multijunction architectures that minimize carrier

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

    SciTech Connect (OSTI)

    Atwater, Harry

    2012-04-30T23:59:59.000Z

    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.

  19. Light trapping in solar cells at the extreme coupling limit Ali Naqavi,1,2,

    E-Print Network [OSTI]

    Petitpierre, Claude

    Light trapping in solar cells at the extreme coupling limit Ali Naqavi,1,2, * Franz-Josef Haug,1 thin film silicon solar cells in the low absorption regime. We consider simultaneously wavelength.1950, 130.2790. 1. INTRODUCTION Enhancing light absorption in solar cells has been a topic of research

  20. Semiconductor heterostructures and optimization of light-trapping structures for efficient thin-film solar cells

    E-Print Network [OSTI]

    Yu, Edward T.

    applications. However, one of the most persistent issues in solar cell design continues to be how to most and integration of active and passive media in solar cells. Myriad photonic structures containing sub of semiconductor nanostructures have inspired a host of new solar cell structures, including designs based

  1. CIGS Solar Cell on Flexible Stainless Steel Substrate Fabricated by Sputtering Method: Simulation and Experimental Results

    E-Print Network [OSTI]

    Kanicki, Jerzy

    CIGS Solar Cell on Flexible Stainless Steel Substrate Fabricated by Sputtering Method: Simulation-electronic properties of the Cu(InGa)Se2(CIGS) solar cell fabricated by sputtering method on stainless steel substrate are consistent with each other. 1. Introduction Flexible Cu In Ga Se (CIGS) solar cells are very attractive

  2. EARTH ABUNDANT MATERIALS FOR HIGH EFFICIENCY HETEROJUNCTION THIN FILM SOLAR CELLS

    E-Print Network [OSTI]

    Ceder, Gerbrand

    materials for thin film solar cells such as CdTe and CIGS suffer from concerns over resource scarcity (eEARTH ABUNDANT MATERIALS FOR HIGH EFFICIENCY HETEROJUNCTION THIN FILM SOLAR CELLS Yun Seog Lee 1 conversion efficiencies should be increased. In terms of reducing module cost, thin film solar cells

  3. Numerical Modeling of CIGS Solar Cells: Definition of the Baseline and

    E-Print Network [OSTI]

    Sites, James R.

    Thesis Numerical Modeling of CIGS Solar Cells: Definition of the Baseline and Explanation our supervision by Markus Gloeckler entitled "Numerical Modeling of CIGS Solar Cells: Definition. A three-layer structure, simulating a Cu(InGa)Se2 (CIGS) heterojunction solar cell, was set up using

  4. Effects of Series Resistance and Inductance on Solar Cell Admittance Measurements(a)

    E-Print Network [OSTI]

    Scofield, John H.

    on a variety of 0.43 cm2 area, copper indium gallium diselenide (CIGS) polycrystalline thin film solar cellsEffects of Series Resistance and Inductance on Solar Cell Admittance Measurements(a) John H Energy Materials and Solar Cells on April 17, 1994) Admittance measurements have been performed

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

    E-Print Network [OSTI]

    Rockett, Angus

    conversion efficiency of solar cells made from this material [1]. One of the special qualities of the CIGS improve the solar cell performance. In many of the different CIGS fabrication techniques, an in depthDiffusion of indium and gallium in Cu(In,Ga)Se2 thin film solar cells O. Lundberga,*, J. Lua , A

  6. Measuring sheet resistance of CIGS solar cell's window layer by spatially resolved electroluminescence imaging

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1/12 Measuring sheet resistance of CIGS solar cell's window layer by spatially resolved model to simulate the behavior of CIGS solar cells based on the spread sheet resistance effect on the determination of the window layer sheet resistance in CIGS solar cells, but our approach could be transferred

  7. NUMERICAL MODELING OF CIGS AND CdTe SOLAR CELLS: SETTING THE BASELINE

    E-Print Network [OSTI]

    Sites, James R.

    NUMERICAL MODELING OF CIGS AND CdTe SOLAR CELLS: SETTING THE BASELINE M. Gloeckler, A important complications that are often found in experimental CIGS and CdTe solar cells. 1. INTRODUCTION Numerical modeling of polycrystalline thin-film solar cells is an important strategy to test the viability

  8. CNT-SI HETEROJUNCTION SOLAR CELLS WITH STRUCTURE-CONTROLLED SINGLE-WALL CARBON NANOTUBE FILMS

    E-Print Network [OSTI]

    Maruyama, Shigeo

    CNT-SI HETEROJUNCTION SOLAR CELLS WITH STRUCTURE- CONTROLLED SINGLE-WALL CARBON NANOTUBE FILMS solar cells. We proposed a water-vapor treatment to build up SWNTs to a self-assembled micro- honeycomb network for the application of solar cells [1]. The micro-honeycomb network consists of vertical

  9. Device Characteristics of Bulk-Heterojunction Polymer Solar Cells (DMR-0819860)

    E-Print Network [OSTI]

    Petta, Jason

    Device Characteristics of Bulk-Heterojunction Polymer Solar Cells (DMR-0819860) H. Wang, E. Gomez University Polymer solar cells are important candidates for sustainable, low-cost energy generation of vertical compositional heterogeneities on charge transport in polymer solar cells via modular construction

  10. DISSERTATION ANTICIPATED PERFORMANCE OF Cu(In,Ga)Se2 SOLAR CELLS IN THE

    E-Print Network [OSTI]

    Sites, James R.

    i DISSERTATION ANTICIPATED PERFORMANCE OF Cu(In,Ga)Se2 SOLAR CELLS IN THE THIN-FILM LIMIT Submitted ENTITLED `ANTICIPATED PERFORMANCE OF Cu(In,Ga)Se2 SOLAR CELLS IN THE THIN-FILM LIMIT' BE ACCEPTED(In,Ga)Se2 SOLAR CELLS IN THE THIN-FILM LIMIT The demand for alternative sources of energy is rapidly

  11. Silicon epitaxy below 200C: Towards thin crystalline solar cells R. Carioua,b

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Silicon epitaxy below 200°C: Towards thin crystalline solar cells R. Carioua,b , R. Ruggeria,c , P spectroscopic ellipsometry and HRTEM measurements. Moreover, we build heterojunction solar cells with intrinsic of current devices. KEYWORDS Silicon epitaxy, RF-PECVD, low temperature, thin crystalline solar cells

  12. Evaluation of Circular-Shaped Features on the Surface of Solar Cells from the

    E-Print Network [OSTI]

    Evaluation of Circular-Shaped Features on the Surface of Solar Cells from the Hubble Space by the manufacturer of the CMX coverglass of the HST solar cells, circular shaped features of unknown origin were The Hubble Space Telescope is powered by solar cells which are arranged on two flexible wings. During

  13. SOLAR CELL BASED PYRANOMETERS: EVALUATION OF THE DIFFUSE RESPONSE Frank Vignola

    E-Print Network [OSTI]

    Oregon, University of

    260 SOLAR CELL BASED PYRANOMETERS: EVALUATION OF THE DIFFUSE RESPONSE Frank Vignola Department The responsivity to diffuse radiation of a solar cell based pyranometer is studied. Diffuse measurements are made of the LiCor pyranometer is presented. Implication of the spectral dependence of the solar cell based

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

    E-Print Network [OSTI]

    to bring down the cost of photovoltaic (PV) solar cells has gained huge momentum, and many strategiesOptimization 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 metallic

  15. NANOSTRUCTURED SOLAR CELLS FOR HIGH EFFICIENCY PHOTOVOLTAICS Christiana B. Honsberg1

    E-Print Network [OSTI]

    Honsberg, Christiana

    mechanisms and device structures and materials to implement nanostructured solar cells, and low cost to lattice matching and; (3) the potential for low cost solar cell structures using self to circumvent both existing efficiency and cost drivers. While nanostructured solar cells have significant

  16. Coupled optical and electrical modeling of solar cell based on conical pore silicon photonic crystals

    E-Print Network [OSTI]

    John, Sajeev

    a significant part of silicon solar cell cost. Thin film technology is a promising way to avoid these costCoupled optical and electrical modeling of solar cell based on conical pore silicon photonic://jap.aip.org/authors #12;Coupled optical and electrical modeling of solar cell based on conical pore silicon photonic

  17. Nanowire-Based All-Oxide Solar Cells Benjamin D. Yuhas and Peidong Yang*

    E-Print Network [OSTI]

    Yang, Peidong

    electricity cost from a silicon solar cell well above that which comes from coal- or gas-burning power plantsNanowire-Based All-Oxide Solar Cells Benjamin D. Yuhas and Peidong Yang* Department of Chemistry present an all-oxide solar cell fabricated from vertically oriented zinc oxide nanowires and cuprous oxide

  18. Angular constraint on light-trapping absorption enhancement in solar cells and Shanhui Fan

    E-Print Network [OSTI]

    Fan, Shanhui

    trapping results in a thinner active region in a solar cell, which lowers the pro- duction cost by reducingAngular constraint on light-trapping absorption enhancement in solar cells Zongfu Yua and Shanhui 2010; accepted 5 December 2010; published online 4 January 2011 Light trapping for solar cells can

  19. Conventional and 360 degree electron tomography of a micro-crystalline silicon solar cell

    E-Print Network [OSTI]

    Dunin-Borkowski, Rafal E.

    for use as the active absorber layer in low cost solar cells [1], for which efficiencies higher than 8Conventional and 360 degree electron tomography of a micro- crystalline silicon solar cell M thereafter) in micro-crystalline silicon (µc-Si:H) solar cell. The limitations of inferring the 3D geometry

  20. The ultra-thin solar cells that could generate power through windows

    E-Print Network [OSTI]

    Rogers, John A.

    international companies are making thin-film solar cells, but they are typically less efficient at convertingThe ultra-thin solar cells that could generate power through windows By Claire Bates Last updated at 11:11 AM on 06th October 2008 Solar cells that are transparent enough to be used to tint windows

  1. EE580 Solar Cell Basics for Teachers Dr. Todd J. Kaiser

    E-Print Network [OSTI]

    Kaiser, Todd J.

    1 EE580 Solar Cell Basics for Teachers Dr. Todd J. Kaiser Cobleigh 531 994-7276 tjkaiser and Protocol 1Montana State University: Solar Cells Lecture 1: Introduction Course Objectives · Train Teachers in the Science behind Solar Cells · Introduce the student to the techniques and equipment used

  2. CNT-Si heterojunction solar cell with single-walled carbon nanotubes Shigeo Maruyama

    E-Print Network [OSTI]

    Maruyama, Shigeo

    CNT-Si heterojunction solar cell with single-walled carbon nanotubes Shigeo Maruyama Department solar cells. We proposed a water vapor treatment to build up SWNTs to a self-assembled micro-honeycomb network for the application of solar cells [1]. The micro- honeycomb network consists of vertical

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

    E-Print Network [OSTI]

    Kassegne, Samuel Kinde

    FABRICATION AND CHARACTERIZATION OF 3-D ALL POLYMER FLEXIBLE SOLAR CELL _______________ A Thesis and Characterization of 3-D All Polymer Flexible Solar Cell by Krishna Ashwinbhai Desai Master of Science in Mechanical (Polyethylene terephthalate) as a flexible substrate, a potentially wearable organic solar cell is enabled

  4. Molecular Packing and Solar Cell Performance in Blends of Polymers with a Bisadduct Fullerene

    E-Print Network [OSTI]

    McGehee, Michael

    Molecular Packing and Solar Cell Performance in Blends of Polymers with a Bisadduct Fullerene States *S Supporting Information ABSTRACT: We compare the solar cell performance of several polymers the efficiency of the solar cells only when they do not intercalate between the polymer side chains. When

  5. Demo: Organic Solar Cell-equipped Energy Harvesting Active Networked Tag (EnHANT) Prototypes

    E-Print Network [OSTI]

    Carloni, Luca

    Demo: Organic Solar Cell-equipped Energy Harvesting Active Networked Tag (EnHANT) Prototypes Gerald harvesting and communications hardware, namely organic solar cells and ultra-wide-band impulse radio (UWB harvesting, organic solar cells, ultra-low-power com- munications, ultra-wideband impulse radio, energy

  6. Controlled Growth of Single-Walled Carbon Nanotubes for CNT-Si heterojunction solar cell

    E-Print Network [OSTI]

    Maruyama, Shigeo

    Controlled Growth of Single-Walled Carbon Nanotubes for CNT-Si heterojunction solar cell Shigeo two different SWNT assemblies for SWNT-Si heterojuction solar cells. We proposed a water vapor treatment to build up SWNTs to a self-assembled micro-honeycomb network for the application of solar cells

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

    E-Print Network [OSTI]

    Grandidier, Jonathan

    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

  8. CVD growth control and solar cell application of single-walled carbon nanotubes

    E-Print Network [OSTI]

    Maruyama, Shigeo

    CVD growth control and solar cell application of single-walled carbon nanotubes ( CVD ) #12;#12; Doctoral Dissertation CVD Growth Control and Solar Cell Application of Single is supposed to be a very promising candidate for next-generation solar cell applications. However, three main

  9. A highly efficient (>6%) Cd1xMnxSe quantum dot sensitized solar cell

    E-Print Network [OSTI]

    Cao, Guozhong

    A highly efficient (>6%) Cd1ŔxMnxSe quantum dot sensitized solar cell Jianjun Tian,*a Lili Lv,a Chengbin Fei,b Yajie Wang,b Xiaoguang Liua and Guozhong Cao*bc Quantum dot sensitized solar cells (QDSCs-effective solar cell. The design and synthesis of quantum dots (QDs) for achieving high photoelectric performance

  10. Advancing beyond current generation dye-sensitized solar cells Thomas W. Hamann,ab

    E-Print Network [OSTI]

    Advancing beyond current generation dye-sensitized solar cells Thomas W. Hamann,ab Rebecca A The most efficient dye-sensitized solar cells (DSSCs) have had essentially the same configuration on the fabrication and character- ization of new architectures for dye-sensitized solar cells. He now holds

  11. Spectroscopy of Donor--Acceptor Porphyrins for Dye-Sensitized Solar Cells

    E-Print Network [OSTI]

    Himpsel, Franz J.

    Spectroscopy of Donor--Acceptor Porphyrins for Dye-Sensitized Solar Cells Ioannis Zegkinoglou improvement in the design of dye- sensitized solar cells has been the combination of light- absorbing the energy conversion efficiency. INTRODUCTION Dye-sensitized solar cells (DSSCs) are promising alternatives

  12. Hydroxamate Anchors for Improved Photoconversion in Dye-Sensitized Solar Cells

    E-Print Network [OSTI]

    Hydroxamate Anchors for Improved Photoconversion in Dye- Sensitized Solar Cells Timothy P. Brewster-polypyridyl dyes to TiO2 surfaces in dye-sensitized solar cells (DSSCs). The study provides fundamental insight materials such as dye-sensitized solar cells (DSSCs) made of sensitized nano- particulate thin-films.4 Since

  13. Nanomaterials-Enabled Dye-Sensitized Solar Cells and Jun Lou1

    E-Print Network [OSTI]

    O-7 Nanomaterials-Enabled Dye-Sensitized Solar Cells Pei Dong1 and Jun Lou1 1 sensitized solar cells (DSCs), the third generation of solar cells, have attracted more and more attention Department of Mechanical Engineering and Materials Science, Rice University, Houston, Texas, U.S.A. Dye

  14. New Architectures for Dye-Sensitized Solar Cells Alex B. F. Martinson,[a, b

    E-Print Network [OSTI]

    New Architectures for Dye-Sensitized Solar Cells Alex B. F. Martinson,[a, b] Thomas W. Hamann of magnitude such as depicted in Figure 1. Abstract: Modern dye-sensitized solar cell (DSSC) tech- nology steadily climbing, one class--dye-sensi- tized solar cells (DSSCs)--has notably plateaued. After

  15. Dye-Sensitized Solar Cells DOI: 10.1002/anie.201104786

    E-Print Network [OSTI]

    Lin, Zhiqun

    Dye-Sensitized Solar Cells DOI: 10.1002/anie.201104786 Low-Cost Copper Zinc Tin Sulfide Counter Electrodes for High- Efficiency Dye-Sensitized Solar Cells** Xukai Xin, Ming He, Wei Han, Jaehan Jung, and Zhiqun Lin* Dye-sensitized solar cells (DSSCs) are among the most promising photovoltaic devices for low

  16. Dye-Sensitized Solar Cells DOI: 10.1002/anie.200704919

    E-Print Network [OSTI]

    Cao, Guozhong

    Dye-Sensitized Solar Cells DOI: 10.1002/anie.200704919 Aggregation of ZnO Nanocrystallites for High Conversion Efficiency in Dye-Sensitized Solar Cells** Qifeng Zhang, Tammy P. Chou, Bryan Russo, Samson A system consisting of a dye-sensitized semiconductor film and an electrolyte, dye-sensitized solar cells

  17. Determining the locus for photocarrier recombination in dye-sensitized solar cells

    E-Print Network [OSTI]

    Schiff, Eric A.

    Determining the locus for photocarrier recombination in dye-sensitized solar cells Kai Zhua) and E and infrared transmittance measurements on dye-sensitized solar cells based on a mesoporous titania (TiO2. © 2002 American Institute of Physics. DOI: 10.1063/1.1436533 Dye-sensitized solar cells based

  18. Graphene Materials and Their Use in Dye-Sensitized Solar Cells Joseph D. Roy-Mayhew,

    E-Print Network [OSTI]

    Aksay, Ilhan A.

    Graphene Materials and Their Use in Dye-Sensitized Solar Cells Joseph D. Roy-Mayhew, and Ilhan A References 6345 1. INTRODUCTION Dye-sensitized solar cells (DSSCs) have taken up broad interest. Graphene Applications in Other Types of Solar Cells 6343 7. Conclusions and Outlook 6343 Author Information

  19. Dye-sensitized solar cells using laser processing techniques A. Piqu, a

    E-Print Network [OSTI]

    Arnold, Craig B.

    Dye-sensitized solar cells using laser processing techniques H. Kim,a A. Piqué, a G. P. Kushto,a R in dye-sensitized solar cells. LDW enables the fabrication of conformal structures containing metals that is ideally suited for dye-sensitized solar cells. In this experiment, a pulsed UV laser (355nm) is used

  20. Functionalized Graphene Sheets as a Versatile Replacement for Platinum in Dye-Sensitized Solar Cells

    E-Print Network [OSTI]

    Aksay, Ilhan A.

    ) electrodes were tested for catalytic performance in dye-sensitized solar cells (DSSCs). By using ethyl) this residue must not disperse in the electrolyte. KEYWORDS: graphene, dye-sensitized solar cell, cobalt redox mediator, triiodide, sacrificial binder 1. INTRODUCTION Dye-sensitized solar cells (DSSCs