Influence of Composition on the Performance of Sintered Cu(In,Ga)Se2 Nanocrystal Thin-Film Photovoltaic Devices

被引：35

作者：

Akhavan, Vahid A. ^{[1
,2
,3
]}

Harvey, Taylor B. ^{[1
,2
,3
]}

Stolle, C. Jackson ^{[1
,2
,3
]}

Ostrowski, David P. ^{[2
,3
,4
]}

Glaz, Micah S. ^{[2
,3
,4
]}

Goodfellow, Brian W. ^{[1
,2
,3
]}

Panthani, Matthew G. ^{[1
,2
,3
]}

Reid, Dariya K. ^{[1
]}

Vanden Bout, David A. ^{[2
,3
,4
]}

Korgel, Brian A. ^{[1
,2
,3
]}

机构：

[1] Univ Texas Austin, Dept Chem Engn, Austin, TX 78712 USA

[2] Univ Texas Austin, Texas Mat Inst, Austin, TX 78712 USA

[3] Univ Texas Austin, Ctr Nano & Mol Sci & Technol, Austin, TX 78712 USA

[4] Univ Texas Austin, Dept Chem, Austin, TX 78712 USA

来源：

CHEMSUSCHEM | 2013年 / 6卷 / 03期

基金：

美国国家科学基金会;

关键词：

copper; gallium; indium; selenium; thin films; SOLAR-CELL; CUINSE2; CIGS; INKS;

D O I：

10.1002/cssc.201200677

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Thin-film photovoltaic devices (PVs) were prepared by selenization using oleylamine-capped Cu(In,Ga)Se2 (CIGS) nanocrystals sintered at a high temperature (>500 degrees C) under Se vapor. The device performance varied significantly with [Ga]/[In+Ga] content in the nanocrystals. The highest power conversion efficiency (PCE) observed in the devices studied was 5.1% under air mass 1.5global (AM1.5G) illumination, obtained with [Ga]/[In+Ga]=0.32. The variation in PCE with composition is partly a result of bandgap tuning and optimization, but the main influence of nanocrystal composition appeared to be on the quality of the sintered films. The [Cu]/[In+Ga] content was found to be strongly influenced by the [Ga]/[In+Ga] concentration, which appears to be correlated with the morphology of the sintered film. For this reason, only small changes in the [Ga]/[In+Ga] content resulted in significant variations in device efficiency.

引用

页码：481 / 486

页数：6

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