Quantitative luminescence mapping of Cu(In, Ga)Se2 thin-film solar cells

被引：33

作者：

Delamarre, Amaury ^{[1
]}

Paire, Myriam ^{[1
]}

Guillemoles, Jean-Francois ^{[1
]}

Lombez, Laurent ^{[1
]}

机构：

[1] EDF R&D CNRS Chim ParisTech, Inst Res & Dev Photovolta Energy IRDEP, UMR 7174, F-78401 Chatou, France

来源：

PROGRESS IN PHOTOVOLTAICS | 2015年 / 23卷 / 10期

关键词：

photoluminescence; electroluminescence; CIGS; hyperspectral; absolute intensity; mapping;

D O I：

10.1002/pip.2555

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：

We investigate photoluminescence and electroluminescence (PL and EL) emission images from Cu(In,Ga)Se-2-based solar cells by means of a Hyperspectral Imager. Using the generalized Planck's law, maps of the effective quasi-Fermi level splitting Delta mu(eff) in absolute values are obtained. A good agreement is found between the spatially averaged splitting in PL and the global open-circuit voltage. However, from a local carrier transport discussion, we conclude that the equality does not hold locally. The spatial variations are rather attributed to local depth variations of the quasi-Fermi level splitting due to material properties spatial fluctuations. By comparing PL and EL emissions, we discuss qualitatively the local effective lifetimes and collection efficiencies. Copyright (C) 2014 John Wiley & Sons, Ltd.

引用

页码：1305 / 1312

页数：8

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