Preparation and effect of porous silicon on the surface of silicon solar cells

被引：0

作者：

Lin, Min ^{[1
]}

Zhang, Feng-Ming ^{[2
]}

Wu, Xiao-Shan ^{[2
]}

机构：

[1] Photovoltaic Engineering Center, Nanjing University, Nanjing 210093, China

[2] Physics Department, Nanjing University, Nanjing 210093, China

来源：

Faguang Xuebao/Chinese Journal of Luminescence | 2013年 / 34卷 / 06期

关键词：

Conversion efficiency - Hydrofluoric acid - Quantum efficiency - Photovoltaic effects - Reflection - Silicon solar cells - Solar power generation;

D O I：

10.3788/fgxb20133406.0758

中图分类号：

学科分类号：

摘要：

A layer of porous silicon was formed on the surface of the pyramids on the silicon using the electrochemical method. The effect of the porous silicon on the reflectivity of surface as well as the photovoltaic conversion quantum efficiency and the effect of oxidation on the photovoltaic conversion quantum efficiency for different wavelengths were studied. It was observed that the density of hydrofluoric acid(HF) did not make a difference on the reflectivity of the surface, and the electrochemical etching time can determine the minimun-reflection wavelength. The average reflectivity of the structure can be 2%. Because of the porous silicon, the photovoltaic conversion quantum efficiency is decreased for the wavelength between 300~500 nm, and is increased for the wavelength beyond 500 nm. Rapid oxidation can decrease the surface recombination so as to increase the photovoltaic conversion quantum efficiency for the short wavelength, and it can be a guidance for increasing the efficiency of the silicon solar cells.

引用

页码：758 / 762

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