Effects of compression and controlled selenization on powder-fabricated Cu (In,Ga)Se2 thin films

被引：4

作者：

Song, Bong-Geun ^{[1
,2
]}

Ahn, Hak-Young ^{[1
,3
]}

Park, Bo-In ^{[1
,4
]}

Park, Hyung-Ho ^{[2
]}

Ju, Byeong-Kwon ^{[3
]}

Lee, Seung Yong ^{[1
,5
]}

Park, Jong-Ku ^{[1
]}

Cho, So-Hye ^{[1
,5
]}

机构：

[1] Korea Inst Sci & Technol, Mat Architecturing Res Ctr, Hwarangno 14 Gil 5, Seoul 02792, South Korea

[2] Yonsei Univ, Dept Mat Sci & Engn, Yonsei Ro 50, Seoul 03722, South Korea

[3] Korea Univ, Sch Elect Engn, Display & Nanosyst Lab, Seoul 02841, South Korea

[4] Korea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Daejeon 34141, South Korea

[5] Korea Univ Sci & Technol, KIST Sch, Div Nano & Informat Technol, Seoul 02792, South Korea

来源：

APPLIED SURFACE SCIENCE | 2019年 / 475卷

关键词：

Photovoltaic materials; Cu(In Ga)Se-2; Light absorbing layer; Thin films; Powder process; SOLAR-CELLS; CU(IN; GA)SE-2; EFFICIENCY; ABSORBERS;

D O I：

10.1016/j.apsusc.2018.12.196

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Cu(In,Ga)Se-2 thin films have been used as a light absorbing layer in high-efficiency solar cells. Among many methods, the powder process for fabricating Cu(In,Ga)Se-2 thin films is advantageous, due to its simplicity and minimal usage of materials. However, Cu(In,Ga)Se-2 layers produced by the powder process often result in high porosity and small grain sizes, which has been a significant barrier to wide application. In this report, we demonstrate that simple compression of the Cu(In,Ga)S-2 powder coat and a cost-efficient selenization using a mixture of Se and Al2O3 can reduce porosity and enlarge the grain size. It is surmised that improved particle packing density in the powder coats, in addition to sintering with a steady supply of Se vapor, synergistically enhances highly sintered Cu(In,Ga)Se-2 thin films.

引用

收藏

页码：158 / 161

页数：4

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