Electromodulated Photoluminescence Study of CdS/CdTe Thin-Film Solar Cell
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概要
- 論文の詳細を見る
The $n^{+}$-CdTe1-xSx layer, in which the most of the photocarriers are generated in the CdS/CdTe thin-film solar cell, has been characterized using a novel spectroscopic technique called electromodulated photoluminescence (EMPL), which is the first derivative spectroscopy monitoring electric-field-induced changes in the PL signal. In conjunction with the results of PL measurements, the ultraviolet-light-excited (UVE-) EMPL measurements reveal that the depletion layer is extended to a quite shallow region in the $n^{+}$-CdTe1-xSx layer from the CdS/CdTe(S) metallurgical interface by ${<}15$ nm and not extended into the $n$-CdS layer. Also demonstrated here is that the strong UVE-EMPL signal is closely connected with the high photovoltaic (PV) performances because it is obtained from the shallow depleted $n^{+} $-CdTe1-xSx region with low density of nonradiative recombination centers.
- Publication Office, Japanese Journal of Applied Physics, Faculty of Science, University of Tokyoの論文
- 2001-07-15
著者
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Gotoh Masahiro
Department Of Occupational And Environmental Health Nagoya University Graduate School Of Medicine
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Nakamura Kyotaro
Department Of Physical Science Graduate School Of Engineering Science
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Fujihara Toshihiko
Department Of Physical Science Graduate School Of Engineering Science
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Toyama Toshihiko
Department Of Physical Science Graduate School Of Engineering Science
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Okamoto Hiroaki
Department of Advanced Materials and Science, Faculty of Engineering, Yamaguchi University
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Toyama Toshihiko
Department of Physical Science, Graduate School of Engineering Science, Osaka University Toyonaka, Osaka 560-8531, Japan
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Okamoto Hiroaki
Department of Physical Science, Graduate School of Engineering Science, Osaka University Toyonaka, Osaka 560-8531, Japan
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Fujihara Toshihiko
Department of Physical Science, Graduate School of Engineering Science, Osaka University Toyonaka, Osaka 560-8531, Japan
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Gotoh Masahiro
Department of Physical Science, Graduate School of Engineering Science, Osaka University Toyonaka, Osaka 560-8531, Japan
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Nakamura Kyotaro
Department of Physical Science, Graduate School of Engineering Science, Osaka University Toyonaka, Osaka 560-8531, Japan
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