Photoluminescence study of Cu diffusion in CdTe
作者:
D. Grecu,
A. D. Compaan,
期刊:
AIP Conference Proceedings
(AIP Available online 1999)
卷期:
Volume 462,
issue 1
页码: 224-229
ISSN:0094-243X
年代: 1999
DOI:10.1063/1.57970
出版商: AIP
数据来源: AIP
摘要:
We report changes in the photoluminescence spectra associated with the diffusion of Cu in CdTe thin films used in CdTe/CdS solar cells. Films grown by vapor transport deposition and radio-frequency sputtering as well as single crystal CdTe were included in the study. The main effects of Cu diffusion appear to be the quenching of a donor-acceptor transition associated with Cd vacancies and the increase in intensity of a lower energy broad-band transition. The PL is subsequently used to explore the effects of electric fields on Cu diffusion. The role of Te as a diffusion barrier for Cu is investigated. ©1999 American Institute of Physics.
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