[17a-D101-1~8] 16.3 Bulk, thin-film and other silicon-based solar cells

[17a-D101-7] Silicon photovoltaic cells coupled with solar-pumped lasers (IV)

〇Yasuhiko Takeda¹, Tadashi Ito¹, Noboru Yamada¹, Hideo Iizuka¹, Hiroshi Ito², Tomoyoshi Motohiro² (1.Toyota Central R&D Labs., 2.Nagoya Univ.)

Keywords:light trapping, optical filters, wireless power transfer

We are developing a new energy transmission system by converting solar insolation to laser light and illuminating silicon photovoltaic cells. We designed the optimal structures for efficient light trapping depending on the light-incident angles, which are determined by the objects (stationary or moving) and means (beams or optical fibers). We demonstrated of a high quantum efficiency of 0.92 for normal incidence. The simulated conversion efficiency was as high as around 50%.