DOI: 10.1063/1.1485301. Effect of Ga content on defect states in CuIn1−xGaxSe2 photovoltaic devices

Effect of Ga content on defect states in CuIn1−xGaxSe2 photovoltaic devices

10.1063/1.1485301

Crossref journal-article

AIP Publishing

Applied Physics Letters (317)

Abstract

Defects in the band gap of CuIn1−xGaxSe2 have been characterized using transient photocapacitance spectroscopy. The measured spectra clearly show response from a band of defects centered around 0.8 eV from the valence band edge as well as an exponential distribution of band tail states. Despite Ga contents ranging from Ga/(In+Ga)=0.0 to 0.8, the defect bandwidth and its position relative to the valence band remain constant. This defect band may act as an important recombination center, contributing to the decrease in device efficiency with increasing Ga content.

Bibliography

Heath, J. T., Cohen, J. D., Shafarman, W. N., Liao, D. X., & Rockett, A. A. (2002). Effect of Ga content on defect states in CuIn1âxGaxSe2 photovoltaic devices. Applied Physics Letters, 80(24), 4540â4542.

Authors 5

J. T. Heath (first)
J. D. Cohen (additional)
W. N. Shafarman (additional)
D. X. Liao (additional)
A. A. Rockett (additional)

References 14 Referenced 196

10.1002/(SICI)1099-159X(199907/08)7:4<311::AID-PIP274>3.0.CO;2-G / Prog. Photovoltaics (1999)
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Dates

Type	When
Created	23 years, 1 month ago (July 26, 2002, 10:23 a.m.)
Deposited	1 year, 6 months ago (Feb. 3, 2024, 5:32 p.m.)
Indexed	1 week, 2 days ago (Aug. 21, 2025, 12:44 p.m.)
Issued	23 years, 2 months ago (June 17, 2002)
Published	23 years, 2 months ago (June 17, 2002)
Published Print	23 years, 2 months ago (June 17, 2002)

Funders 0

None

BibTeX

@article{Heath_2002, title={Effect of Ga content on defect states in CuIn1−xGaxSe2 photovoltaic devices}, volume={80}, ISSN={1077-3118}, url={http://dx.doi.org/10.1063/1.1485301}, DOI={10.1063/1.1485301}, number={24}, journal={Applied Physics Letters}, publisher={AIP Publishing}, author={Heath, J. T. and Cohen, J. D. and Shafarman, W. N. and Liao, D. X. and Rockett, A. A.}, year={2002}, month=jun, pages={4540–4542} }

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