[19a-PB3-1~25] 13.8 Optical properties and light-emitting devices

[19a-PB3-21] Dielectric function spectra and optical transitions of TlBr crystals for radiation detectors

〇Ryota Kitano¹, YongGu Shim¹, Kazuki Wakita², Nazim Mamedov³, Masato Ishikawa⁴, Toshiyuki Onodera⁵, Tadayoshi Shoji⁵, Katsumi Mochizuki⁵ (1.Osaka Prefecture Univ., 2.Chiba Institute of Tech., 3.Azerbaijan National Academy of Sciences, 4.Chiba Univ., 5.Tohoku Institute of Tech.)

Keywords:dielectric function spectra, electronic band structure, radiation detector

Thallium bromide (TlBr) is a candidate for detectors of high energy photons such as X-ray and g-ray because of its high photon stopping power. For making better radiation detection devices, it is important to clarify the relationship between optical properties and electronic band structure. In this work, we report on the dielectric function spectra and the related inter-band optical transitions in TlBr.