[21a-B101-1~11] 15.4 III-V-group nitride crystals

9:15 AM - 9:30 AM JST(12:15 AM - 12:30 AM UTC)

[21a-B101-2] Investigation of Optical Wireless Power Transmission using InGaN Photonic Power Converter Cell

〇Masahiro Koga¹, Shunsuke Shibui¹, Ryusei Takahashi¹, Junichi Suzuki¹, Reo Aoyama¹, Takahiro Noguchi¹, Shunki Hayashi¹, Takahiro Fujisawa², Shiori Ii⁴, Ruka Watanabe⁴, Toshihiko Fukamachi³, Koichi Naniwae³, Makoto Miyoshi², Tetsuya Takeuchi⁴, Satoshi Kamiyama⁴, Shiro Uchida¹ (1.Chiba Inst., 2.Nagoya Inst., 3.Ushio Inc., 4.Meijo Univ.)

Keywords:

optical wireless power transmission,InGaN

Optical wireless power transmission (OWPT) has attracted attention as a new energy transmission technology. It has been reported that InGaN photovoltaic devices have high photoelectric conversion efficiency due to the high open-circuit voltage because of having the wide band gap. In this study, In_0.1Ga_0.9N photonic power converter cells with 3 × 3 mm² receiving area were fabricated and irradiated with laser light below 400 nm, which is the safe wavelength range for human eyes, to investigate OWPT systems. As a result, it was found that improvement of the fill factor FF is necessary to achieve higher efficiency. In the near future, further the improvement in conversion efficiency is expected by decreasing the contact resistance and sheet resistance of the device.