[16a-211-1~6] 16.3 Bulk, thin-film and other silicon-based solar cells

[16a-211-6] Silicon photovoltaic cells coupled with solar-pumped lasers (IV)

〇Yasuhiko Takeda¹, Tadashi Ito¹, Noboru Yamada¹, Kazuo Hasegawa¹, Shintaro Mizuno¹, Tadashi Ichikawa¹, Hideo Iizuka¹, Kazuo Higuchi¹, Hiroshi Ito², Akihisa Ichiki², Tomoyoshi Motohiro² (1.Toyota Centarl R&D Labs., 2.Nagoya Univ.)

Keywords:crystalline silicon solar cells, light trapping, remote power supply

We have realized efficient light trapping for crystalline silicon photovoltaic cells coupled with solar pumped lasers emitting at 1.06 um. We designed combinations of multi-layered interference filters and diffuse reflectors on the front/back surfaces for stationary systems and remote power supply to mobile objects, and achieved absorbance higher than 80% with 50 um-thick cells. The thinner cells eliminate detrimental impacts of the series resistance and Auger recombination.