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Title: Arsenic doped Cd-rich CdTe: equilibrium doping limit and long lifetime for high open-circuit voltage solar cells greater than 900 mV

Abstract

The combination of group-V element doping and Cd-rich composition is the most promising current strategy for maximizing p-type doping while preserving long lifetime. In this study, we carefully measure the equilibrium p-type doping limit for As-doped Cd-rich CdTe single crystals and demonstrate a doping limit in the low 1017 cm–3 range upon slow cooling. Here, we present evidence for self-compensation with rapidly decreasing doping efficiency per added As above 5 × 1016 cm–3, yet we also demonstrate CdTe with >1017 cm–3 hole concentration and bulk lifetime >30 ns. Such crystals allow As-doped CdTe photovoltaic devices with open-circuit voltage exceeding 900 mV.

Authors:
 [1];  [1];  [1]; ORCiD logo [2];  [3]
+ Show Author Affiliations
  1. Univ. of Miyazaki, Miyazaki (Japan)
  2. National Renewable Energy Lab. (NREL), Golden, CO (United States)
  3. Univ. of Utah, Salt Lake City, UT (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:
1526454
Report Number(s):
NREL/JA-5900-74157
Journal ID: ISSN 1882-0778
Grant/Contract Number:  
AC36-08GO28308
Resource Type:
Accepted Manuscript
Journal Name:
Applied Physics Express
Additional Journal Information:
Journal Volume: 12; Journal Issue: 8; Journal ID: ISSN 1882-0778
Publisher:
Japan Society of Applied Physics
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; open-circuit voltage; power conversion efficiency; thin film CdTe photovoltaic devices

Citation Formats

Nagaoka, Akira, Nishioka, Kensuke, Yoshino, Kenji, Kuciauskas, Darius, and Scarpulla, Michael A. Arsenic doped Cd-rich CdTe: equilibrium doping limit and long lifetime for high open-circuit voltage solar cells greater than 900 mV. United States: N. p., 2019. Web. doi:10.7567/1882-0786/ab27fb.
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Nagaoka, Akira, Nishioka, Kensuke, Yoshino, Kenji, Kuciauskas, Darius, & Scarpulla, Michael A. Arsenic doped Cd-rich CdTe: equilibrium doping limit and long lifetime for high open-circuit voltage solar cells greater than 900 mV. United States. https://doi.org/10.7567/1882-0786/ab27fb
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Nagaoka, Akira, Nishioka, Kensuke, Yoshino, Kenji, Kuciauskas, Darius, and Scarpulla, Michael A. Mon . "Arsenic doped Cd-rich CdTe: equilibrium doping limit and long lifetime for high open-circuit voltage solar cells greater than 900 mV". United States. https://doi.org/10.7567/1882-0786/ab27fb. https://www.osti.gov/servlets/purl/1526454.
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@article{osti_1526454,
title = {Arsenic doped Cd-rich CdTe: equilibrium doping limit and long lifetime for high open-circuit voltage solar cells greater than 900 mV},
author = {Nagaoka, Akira and Nishioka, Kensuke and Yoshino, Kenji and Kuciauskas, Darius and Scarpulla, Michael A.},
abstractNote = {The combination of group-V element doping and Cd-rich composition is the most promising current strategy for maximizing p-type doping while preserving long lifetime. In this study, we carefully measure the equilibrium p-type doping limit for As-doped Cd-rich CdTe single crystals and demonstrate a doping limit in the low 1017 cm–3 range upon slow cooling. Here, we present evidence for self-compensation with rapidly decreasing doping efficiency per added As above 5 × 1016 cm–3, yet we also demonstrate CdTe with >1017 cm–3 hole concentration and bulk lifetime >30 ns. Such crystals allow As-doped CdTe photovoltaic devices with open-circuit voltage exceeding 900 mV.},
doi = {10.7567/1882-0786/ab27fb},
journal = {Applied Physics Express},
number = 8,
volume = 12,
place = {United States},
year = {2019},
month = {7}
}
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Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.7567/1882-0786/ab27fb
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Cited by: 4 works
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Figures / Tables:

Table I Table I: Summary of bulk lifetime of CdTe in this study and literature.
All figures and tables (5 total)
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Works referenced in this record:

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    Figures / Tables found in this record:

    Table I (p. 11)table
    Fig. 1 (p. 12)figure
    Fig. 2 (p. 13)figure
    Fig. 3 (p. 14)figure
    Fig. 4 (p. 15)figure
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