Properties of CuInGaSe2 solar cells based upon an improved three-stage process

被引:37
作者
Sakurai, K [1 ]
Hunger, R
Tsuchimochi, N
Baba, T
Matsubara, K
Fons, P
Yamada, A
Kojima, T
Deguchi, T
Nakanishi, H
Niki, S
机构
[1] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058568, Japan
[2] Sci Univ Tokyo, Noda, Chiba 2788510, Japan
关键词
solar cells; CuInGaSe2; three stage process; pyrometer; molybdenum; sodium;
D O I
10.1016/S0040-6090(03)00226-8
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Recently, we have developed an improved three-stage growth method by simultaneously using a pyrometer and a thermocouple, to accurately control thickness and composition during growth of CuInGaSe2 (CIGS). As a result, we have obtained solar cells that show preliminary efficiencies up to 16.4% without anti-reflection coating. Using the technique, we have investigated possible mechanism behind non-optimal cell efficiency, focusing on the effects of the molybdenum contact layer. Some additional advantages of our pyrometer monitoring technique are described. Optimizing the properties of Mo layer leads to suppression of Na segregation and distinctive damage to the CIGS surface, improving both cell performance and reproducibility. (C) 2003 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:6 / 10
页数:5
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