CIGS solar cells using a novel window Zn1-xMgxO film

被引:12
作者
Negami, T [1 ]
Minemoto, T [1 ]
Hashimoto, Y [1 ]
Satoh, T [1 ]
机构
[1] Matsushita Elect Ind Co Ltd, Kyoto 6190237, Japan
来源
CONFERENCE RECORD OF THE TWENTY-EIGHTH IEEE PHOTOVOLTAIC SPECIALISTS CONFERENCE - 2000 | 2000年
关键词
D O I
10.1109/PVSC.2000.915923
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
We propose a new window layer of Zn1-xMgxO thin films with a controllable bandgap as an alternative window layer to a CdS film. Measurements of valence band offset and bandgap indicate that a conduction band offset of Zn1-xMgxO/CIGS layers can be controlled by Mg content of the Zn1-xMgxO film. We fabricated CIGS solar cells consist of an ITO/Zn1-xMgxO/CIGS/Mo/Glass structure. The Zn1-xMgxO/CIGS solar cells show performance close to that of the cells using CdS films, when the conduction band of Zn1-xMgxO is higher than that of CIGS. An appropriate conduction band offset of Zn1-xMgxO/CIGS layers decreases the recombination via defects at the interface between majority carriers. Control of conduction band offset has an effect on improving an efficiency of Cd free CIGS solar cells.
引用
收藏
页码:634 / 637
页数:4
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