Title :
Microcrystalline silicon solar cells with photonic crystals
Author :
Tanaka, Y. ; Ishizaki, K. ; De Zoysa, M. ; Umeda, T. ; Kawamoto, Y. ; Fujita, S. ; Noda, S.
Author_Institution :
Dept. of Electron. Sci. & Eng., Kyoto Univ., Katsura, Japan
Abstract :
We investigate the enhancement of optical absorption in thin-film microcrystalline silicon solar cell by creating multiple resonant modes based on photonic crystal band-edge effect. Experimentally, 1.3 times increase of photo-current is observed, and theoretically it is shown that ultimately more than 9.6% conversion efficiency could be possible even with only “500nm” microcrystalline silicon with indirect electronic gap.
Keywords :
absorption; elemental semiconductors; photonic crystals; silicon; solar cells; indirect electronic gap; multiple resonant modes; optical absorption; photonic crystal band-edge effect; photonic crystals; thin-film microcrystalline silicon solar cell; Absorption; Optical films; Photonic crystals; Photonics; Photovoltaic cells; Short-circuit currents; Silicon;
Conference_Titel :
Photonics Conference (IPC), 2014 IEEE
Conference_Location :
San Diego, CA
DOI :
10.1109/IPCon.2014.6995435
