Presentation Information

11:45 AM - 12:00 PM JST(2:45 AM - 3:00 AM UTC)

[9a-N323-9]Investigation of improving the efficiency of GaAs solar cells with DBR structure for optical wireless power transmission

〇(M2)Moeka Chiba¹, Ryoga Kakiuchi¹, Junichi Suzuki¹, Reo Aoyama¹, Yuto Kaneko¹, Riku Maeno¹, Shion Kosugi¹, Ryusei Takahashi¹, Kouichi Akahane², Shiro Uchida¹ (1.Chiba Tech., 2.NICT)

Keywords:

optical wireless power transmission,GaAs solar cell

Optical wireless power transmission (OWPT) is attracting attention as a new energy transmission technology. We introduced a DBR structure into a GaAs solar cell that can efficiently absorb light in a wavelength band with low loss in free space. We investigated the wavelength dependence of photoelectric conversion efficiency. As a result, the effect of DBR was particularly high near the band edge, and a photoelectric conversion efficiency of 55.6% (850 nm) was obtained. From these results, it can be expected that GaAs solar cells will be applied to OWPT in the near-infrared region.

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