Temperature-dependent electroluminescence and voltages of multi-junction solar cells

被引：16

作者：

Karcher, Christian ^{[1
]}

Helmers, Henning ^{[1
]}

Schachtner, Michael ^{[1
]}

Dimroth, Frank ^{[1
]}

Bett, Andreas W. ^{[1
]}

机构：

[1] Fraunhofer Inst Solar Energy Syst ISE, D-79110 Freiburg, Germany

来源：

PROGRESS IN PHOTOVOLTAICS | 2014年 / 22卷 / 07期

关键词：

III-V semiconductors; multi-junction solar cells; electroluminescence; temperature dependence; CPV; space;

D O I：

10.1002/pip.2431

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The spectral electroluminescence of a monolithic triple-junction solar cell reveals the sub-cell open-circuit voltages under variation of temperature and carrier concentration. We present an electroluminescence set-up that is able to acquire a full spectrum in less than 10s and give insight into the voltage-extraction process. The sum of the sub-cell voltages is in excellent agreement to open-circuit voltages acquired under concentrated illumination. The temperature-induced voltage losses are investigated and explained by a bandgap dependent increase in intrinsic carrier concentration. Finally, the accurate extraction of the sub-cell bandgaps helps to identify a temperature rise with increasing current density. Copyright (c) 2013 John Wiley & Sons, Ltd.

引用

页码：757 / 763

页数：7

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