Luminescence properties of Cs.sub.2./sub.HfCl.sub.6./sub. single crystals and its temperature dependence

0522017 - FZÚ 2020 PL eng A - Abstract
Vaněček, Vojtěch - Král, Robert - Páterek, Juraj - Jarý, Vítězslav - Babin, Vladimir - Kodama, S. - Kurosawa, S. - Yokota, Y. - Yoshikawa, A. - Nikl, Martin
Luminescence properties of Cs₂HfCl₆ single crystals and its temperature dependence.
Proceedings of the international symposium on optical materials (ISOM08). Wrocław: University of Wroclaw, 2019 - (Guzik, M.; Cybińska, J.). s. 102-102. ISBN 978-83-60043-36-3.
[International Symposium on Optical Materials (ISOM08) /8./. 09.06.2019-14.06.2019, Wroclaw]
R&D Projects: GA ČR GJ18-17555Y
Institutional support: RVO:68378271
Keywords : cesium hafnium chloride * Bridgman method * crystal growth * scinitillator
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)

Cesium hafnium chloride of formula Cs2HfCl6 (CHC) was discovered as a scintillating material in 1984. Recently it was identified by Burger et al. as a promising scintillator for gamma spectroscopy. In the recent years, the search for suitable element composition of the A2MX6 structural type group with the best scintillating performance was conducted, however, there are few papers regarding the mechanism and temperature dependence of its intrinsic luminescence. The aim of this study is to analyze the temperature dependence of the CHC optical properties and mechanism of its intrinsic luminescence. Cleaved and polished single crystal samples prepared by the vertical Bridgman method were studied by the means of absorbance, radioluminescence, and photoluminescence emission, excitation and decay kinetics in the range of 8 – 500 K.

Permanent Link: http://hdl.handle.net/11104/0306542