Surface Off-Stoichiometry of CuInS2 Thin-Film Solar Cell Absorbers

被引：2
|
作者：
Baer, Marcus [1 ,2 ,3 ]
Klaer, Joachim [1 ]
Felix, Roberto [1 ]
Barreau, Nicolas [6 ]
Weinhardt, Lothar [3 ,4 ]
Wilks, Regan G. [1 ]
Heske, Clemens [3 ,4 ,5 ]
Schock, Hans-Werner [1 ]
机构：
[1] Helmholtz Zentrum Berlin Mat & Energie GmbH, Solar Energy Div, D-14109 Berlin, Germany
[2] Brandenburg Tech Univ Cottbus, Inst Chem & Phys, D-03046 Cottbus, Germany
[3] Univ Nevada, Dept Chem, Las Vegas, NV 89154 USA
[4] Karlsruhe Inst Technol, Inst Synchrotron Radiat, D-76344 Eggenstein Leopoldshafen, Germany
[5] Karlsruhe Inst Technol, Inst Chem Technol & Polymer Chem, D-76128 Karlsruhe, Germany
[6] Univ Nantes, Inst Mat Jean Rouxel, Nantes 2, France
来源：
IEEE JOURNAL OF PHOTOVOLTAICS | 2013年 / 3卷 / 02期
关键词：
Chalcopyrite thin-film solar cell; surface composition; wet-chemical treatment; X-ray photoelectron spectroscopy; CU(IN; GA)(S; SE)(2); EFFICIENCY; IMPACT;
D O I：
10.1109/JPHOTOV.2012.2228299
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：
In this paper, X-ray photoelectron and X-ray-excited Auger electron spectroscopy was used to investigate the chemical surface structure of CuInS2 thin-film solar cell absorbers. We find that the [In]/[Cu]surface composition can vary between 1.6 (+/- 0.4) and 3.7 (+/- 0.7), depending on relatively minor variations in the absorber formation process and/or whether additional wet-chemical treatments are performed. These variations are primarily due to differences in the Cu surface concentration. The corresponding change of the modified In Auger parameter is interpreted as being indicative of a change in the chemical environment of In as a function of Cu off-stoichiometry.
引用
收藏
页码：828 / 832
页数：5
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