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Title: Interface Engineering for 25% CdTe Solar Cells

Abstract

Buffer layers, such as CdS and Mg xZn 1-xO (MZO), are critical for CdTe and other thin film polycrystalline solar cells. A ternary compound, such as MZO, allows for interface engineering by adjusting composition, bandgap, and doping to manipulate barriers and recombination to enhance thin film efficiencies toward 25%. Here, theoretical studies demonstrate the enormous impact of front interface offset and emitter doping have on device performance. The results reveal it is possible to achieve 25% device efficiency with open-circuit voltage >1 V, even for 10 5 cm/s recombination velocity, provided the interface offsets and doping are properly engineered.

Authors:
ORCiD logo [1]; ORCiD logo [1];  [1]
  1. National Renewable Energy Lab. (NREL), 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), Solar Energy Technologies Office (EE-4S)
OSTI Identifier:
1475527
Report Number(s):
NREL/JA-5K00-72328
Journal ID: ISSN 2574-0962
Grant/Contract Number:  
AC36-08GO28308
Resource Type:
Accepted Manuscript
Journal Name:
ACS Applied Energy Materials
Additional Journal Information:
Journal Volume: 1; Journal Issue: 10; Journal ID: ISSN 2574-0962
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 36 MATERIALS SCIENCE; cadmium telluride; CdTe; MgxZn1-xO; thin film solar cells; recombination

Citation Formats

Tuerxunjiang, Abulikemu, Colegrove, Eric M., and Metzger, Wyatt K. Interface Engineering for 25% CdTe Solar Cells. United States: N. p., 2018. Web. doi:10.1021/acsaem.8b01173.
Tuerxunjiang, Abulikemu, Colegrove, Eric M., & Metzger, Wyatt K. Interface Engineering for 25% CdTe Solar Cells. United States. doi:10.1021/acsaem.8b01173.
Tuerxunjiang, Abulikemu, Colegrove, Eric M., and Metzger, Wyatt K. Thu . "Interface Engineering for 25% CdTe Solar Cells". United States. doi:10.1021/acsaem.8b01173. https://www.osti.gov/servlets/purl/1475527.
@article{osti_1475527,
title = {Interface Engineering for 25% CdTe Solar Cells},
author = {Tuerxunjiang, Abulikemu and Colegrove, Eric M. and Metzger, Wyatt K.},
abstractNote = {Buffer layers, such as CdS and MgxZn1-xO (MZO), are critical for CdTe and other thin film polycrystalline solar cells. A ternary compound, such as MZO, allows for interface engineering by adjusting composition, bandgap, and doping to manipulate barriers and recombination to enhance thin film efficiencies toward 25%. Here, theoretical studies demonstrate the enormous impact of front interface offset and emitter doping have on device performance. The results reveal it is possible to achieve 25% device efficiency with open-circuit voltage >1 V, even for 105 cm/s recombination velocity, provided the interface offsets and doping are properly engineered.},
doi = {10.1021/acsaem.8b01173},
journal = {ACS Applied Energy Materials},
number = 10,
volume = 1,
place = {United States},
year = {2018},
month = {9}
}

Journal Article:
Free Publicly Available Full Text
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