[9p-C309-1~13] 12.8 Specific theme: Photoelectric Properties, Structural Controls and Device of Perovskites Materials

3:45 PM - 4:00 PM JST(6:45 AM - 7:00 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[9p-C309-7] Evaluation of Photo Carrier Properties in Ferroelectric CsGeI₃ by Magneto-Reflectivity

〇Hiroaki Fujikawa¹, Zhuo Yang¹, Masaki Gen¹, Ryutaro Okuma¹, Masato Sotome², Yoshihiko Okamoto¹, Takashi Kondo², Atsuhiko Miyata¹, Yoshimitsu Kohama¹ (1.ISSP, 2.Univ. of Tokyo)

Keywords:

Ge based halide perovskite,photo carrier properties,magneto-optics

The halide perovskite semiconductor CsGeI₃ has attracted attention for its ferroelectricity. In this study, we successfully grew its single crystals with a facet exceeding 1 mm². Magneto-reflectivity spectroscopy up to 60 T was performed on these crystals. By analyzing the magnetic field dependence of the reflectivity spectra, we investigated the characteristics of free carriers, excitons, and polarons in CsGeI₃.