標題: Observation of unusual optical transitions in thin-film Cu(In,Ga)Se-2 solar cells
作者: Liao, Yu-Kuang
Kuo, Shou-Yi
Lin, Woei-Tyng
Lai, Fang-I
Hsieh, Dan-Hua
Tsai, Min-An
Chen, Shih-Chen
Chiou, Ding-Wen
Chang, Jen-Chuang
Wu, Kaung-Hsiung
Cheng, Shun-Jen
Kuo, Hao-Chung
電子物理學系
光電工程學系
光電工程研究所
Department of Electrophysics
Department of Photonics
Institute of EO Enginerring
公開日期: 5-Nov-2012
摘要: In this paper, we examine photoluminescence spectra of Cu(In,Ga)Se-2 (CIGS) via temperature-dependent and power-dependent photoluminescence (PL). Donor-acceptor pair (DAP) transition, near-bandedge transition were identified by their activation energies. S-shaped displacement of peak position was observed and was attributed to carrier confinement caused by potential fluctuation. This coincides well with the obtained activation energy at low temperature. We also present a model for transition from V-Se to V-In and to V-Cu which illustrates competing mechanisms between DAPs recombinations. (C) 2012 Optical Society of America
URI: http://dx.doi.org/10.1364/OE.20.00A836
http://hdl.handle.net/11536/20629
ISSN: 1094-4087
DOI: 10.1364/OE.20.00A836
期刊: OPTICS EXPRESS
Volume: 20
Issue: 23
起始頁: 0
結束頁: 0
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