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Title: Performance Analysis of 0.4–1.2-μm CdTe Solar Cells

Abstract

Thin-film CdTe solar cells with an absorber thickness range of 0.4 to 1.2 μm were fabricated by close-space sublimation on a transparent MgZnO window layer. Microscopy cross sections showed that a significant fraction of the CdTe crystallites extended throughout the absorber layer, and capacitance measurements demonstrated that the absorbers were depleted into forward bias. Current and fill factor loss analyses were used to identify dominant loss mechanisms in the devices as a function of absorber thickness, and photoluminescence measurements were increasingly influenced by back-surface recombination as the absorber was made thinner. Furthermore, the thinner CdTe devices showed modest current and fill factor reduction but overall good diode quality, and the highest efficiency of 15% was achieved with 1.2 μm CdTe.

Authors:
ORCiD logo [1];  [1]; ORCiD logo [1]
  1. Colorado State Univ., Fort Collins, CO (United States)
Publication Date:
Research Org.:
Colorado State Univ., Fort Collins, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office
OSTI Identifier:
1721472
Grant/Contract Number:  
EE0007543
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
IEEE Journal of Photovoltaics
Additional Journal Information:
Journal Volume: 10; Journal Issue: 1; Journal ID: ISSN 2156-3381
Publisher:
IEEE
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; Close-space sublimation (CSS); loss analysis; photoluminescence (PL); thin cadmium telluride (CdTe)

Citation Formats

Bothwell, Alexandra M., Drayton, Jennifer A., and Sites, James R. Performance Analysis of 0.4–1.2-μm CdTe Solar Cells. United States: N. p., 2019. Web. doi:10.1109/jphotov.2019.2947556.
Bothwell, Alexandra M., Drayton, Jennifer A., & Sites, James R. Performance Analysis of 0.4–1.2-μm CdTe Solar Cells. United States. https://doi.org/10.1109/jphotov.2019.2947556
Bothwell, Alexandra M., Drayton, Jennifer A., and Sites, James R. Fri . "Performance Analysis of 0.4–1.2-μm CdTe Solar Cells". United States. https://doi.org/10.1109/jphotov.2019.2947556. https://www.osti.gov/servlets/purl/1721472.
@article{osti_1721472,
title = {Performance Analysis of 0.4–1.2-μm CdTe Solar Cells},
author = {Bothwell, Alexandra M. and Drayton, Jennifer A. and Sites, James R.},
abstractNote = {Thin-film CdTe solar cells with an absorber thickness range of 0.4 to 1.2 μm were fabricated by close-space sublimation on a transparent MgZnO window layer. Microscopy cross sections showed that a significant fraction of the CdTe crystallites extended throughout the absorber layer, and capacitance measurements demonstrated that the absorbers were depleted into forward bias. Current and fill factor loss analyses were used to identify dominant loss mechanisms in the devices as a function of absorber thickness, and photoluminescence measurements were increasingly influenced by back-surface recombination as the absorber was made thinner. Furthermore, the thinner CdTe devices showed modest current and fill factor reduction but overall good diode quality, and the highest efficiency of 15% was achieved with 1.2 μm CdTe.},
doi = {10.1109/jphotov.2019.2947556},
url = {https://www.osti.gov/biblio/1721472}, journal = {IEEE Journal of Photovoltaics},
issn = {2156-3381},
number = 1,
volume = 10,
place = {United States},
year = {2019},
month = {11}
}

Journal Article:
Free Publicly Available Full Text
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