Efficiency enhancement of flexible Cu(In,Ga)Se2 solar cells deposited on polyimide-coated soda lime glass substrate by alkali treatment

被引：7

作者：

Sadono, Adiyudha ^{[1
]}

Ogihara, Tomohiro ^{[1
]}

Hino, Masashi ^{[3
]}

Yamamoto, Kenji ^{[3
]}

Nakada, Kazuyoshi ^{[2
]}

Yamada, Akira ^{[2
]}

机构：

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

[2] Tokyo Inst Technol, Dept Elect & Elect Engn, Meguro Ku, Tokyo 1528552, Japan

[3] Kaneka Corp, Osaka 5660072, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS | 2017年 / 56卷 / 08期

关键词：

THIN-FILMS; POSTDEPOSITION TREATMENT; 20-PERCENT EFFICIENCY; PROGRESS; GROWTH; CU(IN;

D O I：

10.7567/JJAP.56.08MC15

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Alkali treatment effects on Cu(In,Ga) Se-2 (CIGS) solar cells deposited on polyimide-coated soda lime glass (PI-coated SLG) were investigated. CIGS on PI-coated SLG shows Na diffusion from the substrate, which should be controlled to obtain high efficiencies. Further incorporation of Na was achieved by enhancing diffusion from the substrate or by external incorporation using post-deposition treatment (PDT) methods. Both methods lead to a high efficiency of approximately 15%. Moreover, aside from Na, K was also incorporated by KF-PDT, resulting in efficiency improvement from 12% for an untreated CIGS to more than 18% at the maximum substrate temperature of 450 degrees C, which is comparable to CIGS deposited at higher temperatures using the same equipment. It was also found that the alkali concentration of CIGS deposited on PI-coated SLG shows almost the same behavior as that of a film deposited on a rigid glass, suggesting that the deposition technique for CIGS on the rigid glass can be applied to flexible substrates. (C) 2017 The Japan Society of Applied Physics

引用

页数：6