A 21.5% efficient Cu(In,Ga)Se2 thin-film concentrator solar cell

被引：132

作者：

Ward, JS ^{[1
]}

Ramanathan, K ^{[1
]}

Hasoon, FS ^{[1
]}

Coutts, TJ ^{[1
]}

Keane, J ^{[1
]}

Contreras, MA ^{[1
]}

Moriarty, T ^{[1
]}

Noufi, R ^{[1
]}

机构：

[1] Natl Renewable Energy Lab, Golden, CO 80401 USA

来源：

PROGRESS IN PHOTOVOLTAICS | 2002年 / 10卷 / 01期

关键词：

Chemical modification - Copper alloys - Current density - Deposition - Energy gap - Evaporation - Mathematical models - Numerical analysis - Polycrystalline materials - Solar concentrators - Thickness measurement;

D O I：

10.1002/pip.424

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Cu(In, Ga)Se-2 (CIGS) solar cells have been designed for operation tinder mildly concentrated sunlight. The absorber was deposited via a three-stage evaporation process that has consistently yielded high-performance one-sun devices. The device structure reported here was modified by reducing the thickness of the US window/buffer layer to enhance the short-circuit current at the expense of the open-circuit voltage. Operation of the devices tinder optical enhancement leads to significant increases in the voltage and fill factor. At 14 suns, the open-circuit voltage for this device was 736 mV, the fill factor was 80.5%, and the efficiency was 21.5%. This result represents the first report of a polycrystalline thin-film solar cell with an efficiency in excess of 20%.

引用

页码：41 / 46

页数：6

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