Photocurrent mapping in high-efficiency radial p-n junction silicon nanowire solar cells using atomic force microscopy

Jih Shang Hwang*, Ming Chun Kao, Jian Min Shiu, Chieh Ning Fan, Shien Chau Ye, Wen Shen Yu, Hsiu Mei Lin, Tai Yuan Lin, Surojit Chattopadhyay, Li Chyong Chen, Kuei Hsien Chen

*此作品的通信作者

研究成果: Article同行評審

14 引文 斯高帕斯(Scopus)

摘要

Rapid formation of radial p-n junctions on electroless-etched silicon nanowires (SiNWs) was successfully demonstrated. With a low-cost objective, a homemade nonhazardous diffusion source of high phosphor concentration annealed at a small thermal budget was used. The SiNW solar cell, with Au electrodes, has shown a power conversion efficiency of 8.41%, which is higher by 30% compared with its planar counterpart. The SiNW solar cell incorporates an inherent antireflection property, reduced diffusion length requirement, and broad-band spectral quantum efficiency. The evidence of a successful radial p-n junction formation in the NWs has been revealed through the help of a conducting atomic force microscope (AFM) scanning for the photogenerated currents on the fractured surfaces of the NWs. The demonstrated radial junction fabrication technique is believed to reduce the cost of production and promote widespread use of them.

原文English
頁(從 - 到)21981-21986
頁數6
期刊Journal of Physical Chemistry C
115
發行號44
DOIs
出版狀態Published - 10 11月 2011

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