Optical Transparency and Surface Recombination Considerations for High Sheet Resistance Emitter Passivation on Silicon Solar Cells

被引:0
|
作者
Yamanaka, Satoshi [1 ]
Gumon, Nicholas [1 ]
Dybiec, Maciej [1 ]
Mueller, Guenther [1 ]
Kopp, Bradley [1 ]
Good, Ethan [1 ]
机构
[1] SolarWorld, Hillsboro, OR 97124 USA
关键词
emitter; high sheet resistivity; optical modeling; passivation; silicon oxide; silicon solar cell;
D O I
暂无
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
The optical impacts of thin SiO2 passivation layer on industrial Si solar cells are modeled. The modeling shows that negligible optical loss results from SiO2 of <18 nm thickness in combination with an adjusted thickness of conventional SiNx anti-reflective coating. Thermally-grown SiO2 was applied as the front surface passivation of industrial Si solar cells with high sheet-resistivity (115 Omega/sq) emitter. Considerable improvement was observed in effective minority carrier lifetime, and 9 mV of Voc and 0.1% ( absolute) of cell efficiency gains have been attained with similar to 18 nm thick SiO2 grown at 850 degrees C over the industrial-type reference cells.
引用
收藏
页码:1166 / 1171
页数:6
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