[8p-N103-1~10] Advances in Light and Heat Coupling: From Interaction to Functional Control

3:15 PM - 3:30 PM JST(6:15 AM - 6:30 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[8p-N103-5] Impacts of sample shape and size on optical properties in CsPbBr₃/Cs₄PbBr₆ crystals for optical cooling

〇(M1)Daichi Tanaka¹, Mitsuki Fukuda¹, Naoki Noborio¹, Shuhei Ichikawa^1,2, Hiroshi Tabata¹, Yasuhiro Yamada³, Kazunobu Kojima¹ (1.The Univ. of Osaka, 2.Research Center for UHVEM, the Univ. of Osaka, 3.Chiba Univ.)

Keywords:

photoluminescence,perovskite,semiconductor optical cooling

The perovskite crystal CsPbBr₃/Cs₄PbBr₆ exhibits highly efficient green photoluminescence and excellent stability in air. Moreover, photon emission with energies higher than that of the excitation light has been observed, indicating its potential application in semiconductor optical cooling. In our previous work, we reported changes in optical properties, such as a decrease in external quantum efficiency, associated with the increase in crystal size. In this study, we further investigate and report the influence of not only crystal size but also crystal shape changes on the optical properties.