Utilization of ultra-thin n-type Hydrogenated Nanocrystalline Silicon for Silicon Heterojunction Solar Cells

被引:1
作者
Qiu, Depeng [1 ]
Duan, Weiyuan [1 ]
Lambertz, Andreas [1 ]
Bittkau, Karsten [1 ]
Qiu, Kaifu [1 ]
Ding, Kaining [1 ]
机构
[1] Forschungszentrum Julich, IEK Photovolta 5, Wilhelm Johnen Str, D-52425 Julich, Germany
来源
2021 IEEE 48TH PHOTOVOLTAIC SPECIALISTS CONFERENCE (PVSC) | 2021年
关键词
Silicon heterojunction solar cell; Nanocrystalline silicon; MICROCRYSTALLINE SILICON;
D O I
10.1109/PVSC43889.2021.9518937
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
To optimize the electrical performance of silicon heterojunction solar cell devices, the electronic properties and microstructure of n-type nc-Si:H were characterized and analyzed. It was found that higher conductivity and crystalline volume fraction (F-c) of nc-Si:H can be obtained at lower silane gas fraction (f(SiH4)), lower power and higher phosphorous gas fraction (f(PH3)). In our case, there is a decline of the passivation for the devices with nc-Si:H after sputtering process. By increasing the phosphine flow fraction, the sputter damage can be reduced and 3%(abs) gain of FF as well as 0.7%(abs) gain of efficiency is reached compared with reference. The best solar cell exhibits the V-oc of 733.3 mV, FF of 79.7%, J(sc) of 39.00 mA/cm(2) and eta of 22.79% at the M2 size wafer.
引用
收藏
页码:806 / 808
页数:3
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