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Title: Trade-Offs in Thin Film Solar Cells with Layered Chalcostibite Photovoltaic Absorbers

Abstract

Discovery of novel semiconducting materials is needed for solar energy conversion and other optoelectronic applications. However, emerging low-dimensional solar absorbers often have unconventional crystal structures and unusual combinations of optical absorption and electrical transport properties, which considerably slows down the research and development progress. Here, the effect of stronger absorption and weaker carrier collection of 2D-like absorber materials are studied using a high-throughput combinatorial experimental approach, complemented by advanced characterization and computations. It is found that the photoexcited charge carrier collection in CuSbSe 2 solar cells is enhanced by drift in an electric field, addressing a different absorption/collection balance. The resulting drift solar cells efficiency is <5% due to inherent J SC/ V OC trade-off, suggesting that improved carrier diffusion and better contacts are needed to further increase the CuSbSe 2 performance. Furthermore, this study also illustrates the advantages of high-throughput experimental methods for fast optimization of the optoelectronic devices based on emerging low-dimensional semiconductor materials.

Authors:
 [1];  [1];  [2];  [3];  [3];  [3];  [2];  [4];  [2]
  1. National Renewable Energy Lab. (NREL), Golden, CO (United States); Colorado School of Mines, Golden, CO (United States)
  2. National Renewable Energy Lab. (NREL), Golden, CO (United States)
  3. Helmholtz-Zentrum Berlin, Berlin (Germany)
  4. Colorado School of Mines, Golden, CO (United States)
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1364055
Alternate Identifier(s):
OSTI ID: 1400606
Report Number(s):
NREL/JA-5K00-67269
Journal ID: ISSN 1614-6832
Grant/Contract Number:  
AC36-08GO28308
Resource Type:
Accepted Manuscript
Journal Name:
Advanced Energy Materials
Additional Journal Information:
Journal Volume: 7; Journal Issue: 11; Journal ID: ISSN 1614-6832
Publisher:
Wiley
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 36 MATERIALS SCIENCE; 2D materials; combinatorial experiments; density functional theory; photovoltaic absorbers; time-resolved spectroscopy

Citation Formats

Welch, Adam W., Baranowski, Lauryn L., Peng, Haowei, Hempel, Hannes, Eichberger, Rainer, Unold, Thomas, Lany, Stephan, Wolden, Colin, and Zakutayev, Andriy. Trade-Offs in Thin Film Solar Cells with Layered Chalcostibite Photovoltaic Absorbers. United States: N. p., 2017. Web. doi:10.1002/aenm.201601935.
Welch, Adam W., Baranowski, Lauryn L., Peng, Haowei, Hempel, Hannes, Eichberger, Rainer, Unold, Thomas, Lany, Stephan, Wolden, Colin, & Zakutayev, Andriy. Trade-Offs in Thin Film Solar Cells with Layered Chalcostibite Photovoltaic Absorbers. United States. doi:10.1002/aenm.201601935.
Welch, Adam W., Baranowski, Lauryn L., Peng, Haowei, Hempel, Hannes, Eichberger, Rainer, Unold, Thomas, Lany, Stephan, Wolden, Colin, and Zakutayev, Andriy. Wed . "Trade-Offs in Thin Film Solar Cells with Layered Chalcostibite Photovoltaic Absorbers". United States. doi:10.1002/aenm.201601935. https://www.osti.gov/servlets/purl/1364055.
@article{osti_1364055,
title = {Trade-Offs in Thin Film Solar Cells with Layered Chalcostibite Photovoltaic Absorbers},
author = {Welch, Adam W. and Baranowski, Lauryn L. and Peng, Haowei and Hempel, Hannes and Eichberger, Rainer and Unold, Thomas and Lany, Stephan and Wolden, Colin and Zakutayev, Andriy},
abstractNote = {Discovery of novel semiconducting materials is needed for solar energy conversion and other optoelectronic applications. However, emerging low-dimensional solar absorbers often have unconventional crystal structures and unusual combinations of optical absorption and electrical transport properties, which considerably slows down the research and development progress. Here, the effect of stronger absorption and weaker carrier collection of 2D-like absorber materials are studied using a high-throughput combinatorial experimental approach, complemented by advanced characterization and computations. It is found that the photoexcited charge carrier collection in CuSbSe2 solar cells is enhanced by drift in an electric field, addressing a different absorption/collection balance. The resulting drift solar cells efficiency is <5% due to inherent J SC/V OC trade-off, suggesting that improved carrier diffusion and better contacts are needed to further increase the CuSbSe2 performance. Furthermore, this study also illustrates the advantages of high-throughput experimental methods for fast optimization of the optoelectronic devices based on emerging low-dimensional semiconductor materials.},
doi = {10.1002/aenm.201601935},
journal = {Advanced Energy Materials},
number = 11,
volume = 7,
place = {United States},
year = {2017},
month = {1}
}

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