[14p-K309-1~14] 3.4 Laser system and materials

5:15 PM - 5:30 PM JST(8:15 AM - 8:30 AM UTC)

[14p-K309-13] Approach to perovskite semiconductor solar-pumped lasers ⅠⅠ

〇Yosuke Kume¹, Taiki Sakaguchi¹, Takaaki Ishikawa¹, Shijun Shi², Masato Soutome³, Takashi Kondo^2,3, Ichirou Shoji¹ (1.Chuo Univ., 2.Univ. of Tokyo, 3.RCAST, Univ. of Tokyo)

Keywords:

perovskite,solar-pumped lasers

We aim to develop a solar-pumped membrane laser using a perovskite semiconductor CH₃NH₃PbI₃. Perovskite thin films of 500 nm thickness formed by vapor-phase deposition on a non-reflective coated sapphire substrate were bonded to each other and sealed on the sides. As a result, no decrease in luminescence intensity was observed at a pumping light intensity of 800 W/cm² at a wavelength of 532 nm, and a transmittance of about 90 % was obtained at a wavelength of 788 nm, which is longer than the band gap.