Experimental and Theoretical Evaluation of Cu(In,Ga)Se2 Concentrator Solar Cells

被引：14

作者：

Hirai, Yoshiaki ^{[1
]}

Nagashima, Hiroshi ^{[1
]}

Kurokawa, Yasuyoshi ^{[1
,2
]}

Yamada, Akira ^{[1
,2
]}

机构：

[1] Tokyo Inst Technol, Dept Phys Elect, Meguro Ku, Tokyo 1528552, Japan

[2] Tokyo Inst Technol, Photovolta Res Ctr PVREC, Meguro Ku, Tokyo 1528552, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS | 2012年 / 51卷 / 01期

关键词：

THIN-FILMS; CHALCOPYRITE; GAP;

D O I：

10.1143/JJAP.51.014101

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Cu(In,Ga)Se-2 (CIGS) solar cells which have yielded high performance devices under 1-sun were experimentally evaluated under various concentrated lights. The open-circuit voltage, fill factor, and efficiency of the fabricated solar cell under 6.6-suns were 728 mV, 0.770, and 20.3%, respectively. It was found that the efficiency of low performance CIGS solar cells was increased by the irradiation of concentrated light and was comparable to the efficiency of high performance CIGS solar cells. Theoretical simulation revealed that the increment of the recombination velocity toward the defect density in CIGS thin films were reduced under concentrated light, due to the compensation of defects by the large amount of carriers generated by irradiating concentrated light. (C) 2012 The Japan Society of Applied Physics

引用

页数：5

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