[9a-N205-1~10] 13.8 Optical properties and light-emitting devices

10:30 AM - 10:45 AM JST(1:30 AM - 1:45 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[9a-N205-7] Electronic and Luminescence Properties of Novel Zero-Dimensional Li₂HfX₆ Halide Scintillators for Neutron Detection

〇(DC)Chihaya Fujiwara^1,2, Shunsuke Kurosawa^2,3,4,5, Akihiro Yamaji^2,3, Akira Yoshikawa^2,3 (1.Graduate School of Eng., Tohoku Univ., 2.IMR, Tohoku Univ., 3.NICHe, Tohoku Univ., 4.ILE Osaka Univ., 5.Institute for Integrated Radiation and Nuclear Science, Kyoto Univ.)

Keywords:

Scintillator,Zero-dimentional perovskite halide,First principal calculation

Zero-dimensional halide perovskites, A2BX6 (A=Cs; B=Hf, Zr; X=Cl, Br, I), are promising scintillator materials that exhibit emission from self-trapped excitons (STEs) originating from spatially isolated [BX6]2− octahedral clusters. In this study, with the aim of developing a novel, highly sensitive, and high-brightness neutron scintillator, we have developed Li2HfX6 (X=Cl, Br, I) scintillators by introducing Li, which contains 6Li with a large neutron reaction cross-section, into the A-site. We investigated their structural, electronic, and luminescence properties through both experimental methods and first-principles calculations.