期刊
APPLIED SURFACE SCIENCE
卷 266, 期 -, 页码 1-4出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2012.10.081
关键词
Crystalline silicon solar cell; Texturization; Nano structure; Antireflection
类别
资金
- Bureau of Energy of Ministry of Economics, Taiwan
Crystalline silicon solar cells with two-scale texture consisting of random upright pyramids and surface nanotextured layer directly onto the pyramids are prepared and reflectance properties and I-V characteristics measured. Random pyramids texture is produced by etching in an alkaline solution. On top of the pyramids texture, a nanotexture is developed using an electroless oxidation/etching process. Solar cells with two-scale surface texturization are prepared following the standard screen-printing technology sequence. The micro/nano surface is found to lower considerably the light reflectance of silicon. The short wavelengths spectral response (blue response) improvement is observed in micro/nano textured solar cells compared to standard upright pyramids textured cells. An efficiency of 17.5% is measured for the best micro/nano textured c-Si solar cell. The efficiency improvement is found to be due to the gain in both J(sc) and V-oc. (C) 2012 Published by Elsevier B.V.
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