Potential fluctuations in compensated chalcopyrites

被引：47

作者：

Siebentritt, S

Papathanaslou, N

Lux-Steiner, MC

机构：

[1] Hahn Meitner Inst Berlin GmbH, D-14109 Berlin, Germany

[2] Free Univ Berlin, Dept Phys, D-1000 Berlin, Germany

来源：

PHYSICA B-CONDENSED MATTER | 2006年 / 376卷

关键词：

chalcopyrites; solar cells; photoluminescence; compensation;

D O I：

10.1016/j.physb.2005.12.208

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Cu-poor chalcopyrites are highly compensated and their band structure is dominated by fluctuating potentials. Since solar cell absorbers are made from these materials, a quantitative analysis of the amplitude of the fluctuations is needed. Photoluminescence measurements of CuInSe2 and CuGaSe2 with varying Cu deficiency offer a tool to access the fluctuations amplitude. The amplitude is found in both cases to increase with increasing Cu deficiency. There appears a trend for lower fluctuation amplitudes in CuInSe2 than CuGaSe2, at least for material close to stoichiometry. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：831 / 833

页数：3

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