Composition-dependent nanostructure of Cu(In,Ga)Se2 powders and thin films

被引：10

作者：

Schnohr, C. S. ^{[1
]}

Kaemmer, H. ^{[1
]}

Steinbach, T. ^{[1
]}

Gnauck, M. ^{[1
]}

Rissom, T. ^{[2
]}

Kaufmann, C. A. ^{[2
]}

Stephan, C. ^{[2
]}

Schorr, S. ^{[2
,3
]}

机构：

[1] Univ Jena, Inst Festkorperphys, D-07743 Jena, Germany

[2] Helmholtz Zentrum Berlin Mat & Energie, D-14109 Berlin, Germany

[3] Free Univ Berlin, Inst Geol Wissensch, D-12249 Berlin, Germany

来源：

THIN SOLID FILMS | 2015年 / 582卷

关键词：

Chalcopyrites; CIGS; CIGSe; X-ray absorption spectroscopy; EXAFS; Nanostructure; Thin film solar cells; SOLAR-CELLS; CUINSE2; SE; EFFICIENCY;

D O I：

10.1016/j.tsf.2014.10.078

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Atomic-scale structural parameters of Cu(In, Ga)Se-2 powders and polycrystalline thin films were determined as a function of the In and Cu contents using X-ray absorption spectroscopy. No difference in the two sample types is observed for the average bond lengths demonstrating the strong tendency towards bond length conservation typical for tetrahedrally coordinated semiconductors. In contrast, the bond length variation is significantly smaller in the thin films than in the powders, particularly for Cu-poor material. This difference in the nanostructure is proposed to originate from differences in the preparation conditions, most prominently from the different history of Cu composition. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：356 / 360

页数：5

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