Abstract
The performance enhancement of polycrystalline Si solar cells by using an optimized discrete multilayer anti-reflection (AR) coating with broadband and omni-directional characteristics is presented. Discrete multilayer AR coatings are optimized by a genetic algorithm, and experimentally demonstrated by refractive-index tunable SiO2 nano-helix arrays and co-sputtered (SiO2)x(TiO2)1-x thin film layers. The optimized multilayer AR coating shows a reduced total reflection, leading to the high incident-photon-to-electron conversion efficiency over a correspondingly wide range of wavelengths and incident angles, offering a very promising way to harvest more solar energy by virtually any type of solar cells for a longer time of a day.
©2012 Optical Society of America
Full Article | PDF ArticleMore Like This
Yin-Jung Chang and Yu-Ting Chen
Opt. Express 19(S4) A875-A887 (2011)
Yongxiang Zhao, Fei Chen, Qiang Shen, and Lianmeng Zhang
Opt. Express 20(10) 11121-11136 (2012)
Martin F. Schubert, Frank W. Mont, Sameer Chhajed, David J. Poxson, Jong Kyu Kim, and E. Fred Schubert
Opt. Express 16(8) 5290-5298 (2008)