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Title: Steady state and time resolved optical characterization studies of Zn2SnO4 nanowires for solar cell applications

Abstract

Nanowires are a promising option for sensitized solar cells, sensors, and display technology. Most of the work thus far has focused on binary oxides for these nanowires, but ternary oxides have advantages in additional control of optical and electronic properties. Here, we report on the diffuse reflectance, Low Temperature and Room Temperature Photoluminescence (PL), PL excitation spectrum, and Time Resolved PL (TRPL) of Zinc Tin Oxide (ZTO) nanowires grown by Chemical Vapor Deposition. The PL from the ZTO nanowires does not exhibit any band gap or near gap emission, and the diffuse reflectance measurement confirms that these ZTO nanowires have a direct forbidden transition. The broad PL spectrum reveals two Gaussian peaks centered at 1.86 eV (red) and 2.81 eV (blue), representing two distinct defect states or complexes. The PL spectra were further studied by the Time Resolved Emission Spectrum and intensity dependent PL and TRPL. The time resolved measurements show complex non-exponential decays at all wavelengths, indicative of defect to defect transitions, and the red emissive states decay much slower than the blue emissive states. The effects of annealing in air and vacuum are studied to investigate the origin of the defect states in the nanowires, showing that themore » blue states are related to oxygen vacancies. We propose an energy band model for the nanowires containing defect states within the band gap and the associated transitions between these states that are consistent with our measurements.« less

Authors:
 [1];  [1]; ORCiD logo [1];  [1];  [2];  [3];  [3];  [1]; ORCiD logo [1]
  1. Univ. of Wyoming, Laramie, WY (United States)
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  3. Sun Yat-sen Univ., Guangzhou (China)
Publication Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1393086
Alternate Identifier(s):
OSTI ID: 1329973
Grant/Contract Number:  
AC02-05CH11231; FG02-10ER46728; SC0004981
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 120; Journal Issue: 16; Journal ID: ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Yakami, Baichhabi R., Poudyal, Uma, Nandyala, Shashank R., Rimal, Gaurab, Cooper, Jason K., Zhang, Xuejie, Wang, Jing, Wang, Wenyong, and Pikal, Jon M. Steady state and time resolved optical characterization studies of Zn2SnO4 nanowires for solar cell applications. United States: N. p., 2016. Web. doi:10.1063/1.4965697.
Yakami, Baichhabi R., Poudyal, Uma, Nandyala, Shashank R., Rimal, Gaurab, Cooper, Jason K., Zhang, Xuejie, Wang, Jing, Wang, Wenyong, & Pikal, Jon M. Steady state and time resolved optical characterization studies of Zn2SnO4 nanowires for solar cell applications. United States. https://doi.org/10.1063/1.4965697
Yakami, Baichhabi R., Poudyal, Uma, Nandyala, Shashank R., Rimal, Gaurab, Cooper, Jason K., Zhang, Xuejie, Wang, Jing, Wang, Wenyong, and Pikal, Jon M. 2016. "Steady state and time resolved optical characterization studies of Zn2SnO4 nanowires for solar cell applications". United States. https://doi.org/10.1063/1.4965697. https://www.osti.gov/servlets/purl/1393086.
@article{osti_1393086,
title = {Steady state and time resolved optical characterization studies of Zn2SnO4 nanowires for solar cell applications},
author = {Yakami, Baichhabi R. and Poudyal, Uma and Nandyala, Shashank R. and Rimal, Gaurab and Cooper, Jason K. and Zhang, Xuejie and Wang, Jing and Wang, Wenyong and Pikal, Jon M.},
abstractNote = {Nanowires are a promising option for sensitized solar cells, sensors, and display technology. Most of the work thus far has focused on binary oxides for these nanowires, but ternary oxides have advantages in additional control of optical and electronic properties. Here, we report on the diffuse reflectance, Low Temperature and Room Temperature Photoluminescence (PL), PL excitation spectrum, and Time Resolved PL (TRPL) of Zinc Tin Oxide (ZTO) nanowires grown by Chemical Vapor Deposition. The PL from the ZTO nanowires does not exhibit any band gap or near gap emission, and the diffuse reflectance measurement confirms that these ZTO nanowires have a direct forbidden transition. The broad PL spectrum reveals two Gaussian peaks centered at 1.86 eV (red) and 2.81 eV (blue), representing two distinct defect states or complexes. The PL spectra were further studied by the Time Resolved Emission Spectrum and intensity dependent PL and TRPL. The time resolved measurements show complex non-exponential decays at all wavelengths, indicative of defect to defect transitions, and the red emissive states decay much slower than the blue emissive states. The effects of annealing in air and vacuum are studied to investigate the origin of the defect states in the nanowires, showing that the blue states are related to oxygen vacancies. We propose an energy band model for the nanowires containing defect states within the band gap and the associated transitions between these states that are consistent with our measurements.},
doi = {10.1063/1.4965697},
url = {https://www.osti.gov/biblio/1393086}, journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 16,
volume = 120,
place = {United States},
year = {Tue Oct 25 00:00:00 EDT 2016},
month = {Tue Oct 25 00:00:00 EDT 2016}
}

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Works referenced in this record:

Growth and characterization of axially periodic Zn2SnO4 (ZTO) nanostructures
journal, June 2004


Nature of the native deep localized defect recombination centers in the chalcopyrite and orthorhombic AgInS2
journal, July 2000


Defect states of ZnO nanoparticles: Discrimination by time-resolved photoluminescence spectroscopy
journal, April 2010


Low-Temperature Wafer-Scale Production of ZnO Nanowire Arrays
journal, July 2003


Structure and luminescence of annealed nanoparticles of ZnS:Mn
journal, November 2000


High mobility transparent thin-film transistors with amorphous zinc tin oxide channel layer
journal, January 2005


Single-Crystal and Twinned Zn2SnO4 Nanowires with Axial Periodical Structures
journal, December 2007


Nonequilibrium structure of Zn2SnO4 spinel nanoparticles
journal, January 2012


A low-cost, high-efficiency solar cell based on dye-sensitized colloidal TiO2 films
journal, October 1991


On quantitative analysis of interband recombination dynamics: Theory and application to bulk ZnO
journal, December 2013


Trap-State Dynamics in Visible-Light-Emitting ZnO:MgO Nanocrystals
journal, March 2008


Far infrared properties of bulk sintered and thin film Zn2SnO4
journal, March 2007


Fundamentals of zinc oxide as a semiconductor
journal, October 2009


Zn 2 SnO 4 Nanowires as Photoanode for Dye-Sensitized Solar Cells and the Improvement on Open-Circuit Voltage
journal, May 2012


Photoelectrochemical Study of the Band Structure of Zn 2 SnO 4 Prepared by the Hydrothermal Method
journal, March 2009


Structural characterization of zinc stannate thin films
journal, February 2002


Luminescence of Mn2+ doped ZnS nanocrystallites
journal, December 1995


Oxygen vacancies in ZnO
journal, December 2003


Electric transport, reversible wettability and chemical sensing of single-crystalline zigzag Zn2SnO4 nanowires
journal, January 2011


Surface Characteristics, Optical and Electrical Properties on Sol-Gel Synthesized Sn-Doped ZnO Thin Film
journal, January 2010


Hydrothermal synthesis and optical characteristics of Eu3+ in Zn2SnO4 nanocrystals
journal, November 2009


Zinc Stannate (Zn 2 SnO 4 ) Dye-Sensitized Solar Cells
journal, April 2007


Nanowire dye-sensitized solar cells
journal, May 2005


Single-crystalline Zn2SnO4 hexangular microprisms: Fabrication, characterization and optical properties
journal, March 2007


Synthesis and photoluminescence of Zn2SnO4 nanowires
journal, September 2009


High-performance flexible zinc tin oxide field-effect transistors
journal, November 2005


Luminescence properties of defects in GaN
journal, March 2005


Defect-related photoluminescence of hexagonal boron nitride
journal, October 2008


Photostable Zn 2 SnO 4 Nanowire Transistors for Transparent Displays
journal, May 2012


Single crystalline zinc stannate nanoparticles for efficient photo-electrochemical devices
journal, January 2010


Synthesis of Zn<SUB>2</SUB>SnO<SUB>4</SUB> Nanowires and Their Photoluminescence Properties
journal, December 2010


Quantum Dot Solar Cells. Tuning Photoresponse through Size and Shape Control of CdSe−TiO 2 Architecture
journal, March 2008


Recombination dynamics of deep defect states in zinc oxide nanowires
journal, April 2009


Nanostructured Zinc Stannate as Semiconductor Working Electrodes for Dye-Sensitized Solar Cells
journal, March 2007


The dependence of ZnO photoluminescence efficiency on excitation conditions and defect densities
journal, November 2013


Origin of green emission and charge trapping dynamics in ZnO nanowires
journal, March 2013


Solar Energy Conversion by Dye-Sensitized Photovoltaic Cells
journal, October 2005


Structure-derived electronic and optical properties of transparent conducting oxides
journal, March 2005


Time-Resolved Area-Normalized Emission Spectroscopy (TRANES):  A Novel Method for Confirming Emission from Two Excited States
journal, March 2001


Properties of transparent zinc‐stannate conducting films prepared by radio frequency magnetron sputtering
journal, May 1995


Nature of Luminescence Transitions in ZnS Crvstals
journal, July 1964


Determination of energy band gap of nanocrystalline SbSI using diffuse reflectance spectroscopy
journal, April 2009