Silicon nanowire solar cells with a-Si hetero-junction showing 7.3% efficiency

被引：2

作者：

Falk, Fritz ^{[1
]}

Jia, Guobin ^{[1
]}

Andrae, Gudrun ^{[1
]}

Sill, Ingo ^{[1
]}

Petkov, Nikolay

机构：

[1] Inst Photon Technol, D-07745 Jena, Germany

来源：

NEXT GENERATION (NANO) PHOTONIC AND CELL TECHNOLOGIES FOR SOLAR ENERGY CONVERSION II | 2011年 / 8111卷

关键词：

Solar cells; silicon; nanowires; hetero-junction; CRYSTALLINE SILICON; SINGLE; HETEROJUNCTION; GOLD;

D O I：

10.1117/12.897369

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：

Core-shell silicon nanowire (SiNW) solar cells with an a-Si heterojunction were prepared on SiNW arrays, which were etched into n-type silicon wafers or into n-doped multicrystalline silicon thin films on glass substrates. A stack of intrinsic and p-doped hydrogenated a-Si was deposited as a shell around the SiNWs by PECVD, acting as a hetero-emitter of the solar cells. Finally a TCO layer consisting of aluminum doped zinc oxide was deposited on top of the a-Si by atomic layer deposition. In a mesa-structured solar cell (area 7 mm(2)) an open circuit voltage of 476 mV and an efficiency of 7.3% were achieved under AM 1.5 illumination. Electron beam induced current measurements show clear evidence that most of the photo-current comes from the thin SiNW layer.

引用

页数：8

共 28 条

[1] High-resolution detection of Au catalyst atoms in Si nanowires [J].