Cs.sub.2./sub.HfCl.sub.6./sub. doped with Zr: Influence of tetravalent substitution on scintillation properties

0545985 - FZÚ 2022 RIV NL eng J - Journal Article
Vaněček, Vojtěch - Páterek, Juraj - Král, Robert - Buryi, Maksym - Babin, Vladimir - Zloužeová, Kateřina - Kodama, S. - Kurosawa, S. - Yokota, Y. - Yoshikawa, A. - Nikl, Martin
Cs₂HfCl₆ doped with Zr: Influence of tetravalent substitution on scintillation properties.
Journal of Crystal Growth. Roč. 573, Nov (2021), č. článku 126307. ISSN 0022-0248. E-ISSN 1873-5002
R&D Projects: GA MŠMT(CZ) EF16_019/0000760; GA ČR GJ18-17555Y
Grant - others:OP VVV - SOLID21(XE) CZ.02.1.01/0.0/0.0/16_019/0000760
Institutional support: RVO:68378271
Keywords : characterization * crystal structure * Bridgman technique * halides * scintillator materials
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 1.830, year: 2021
Method of publishing: Limited access
https://doi.org/10.1016/j.jcrysgro.2021.126307

Detection and identification of radioactive materials in cargo transport requires scintillators with excellent energy resolution and high light output. State-of-the-art halide scintillators e.g. SrI2:Eu or LaBr3:Ce can satisfy the requirements for light yield and energy resolution, but the production costs are very high due to complicated crystal growth and the high prices of rare earth metals. Cesium hafnium chloride (Cs2HfCl6) is a promising intrinsic scintillator with high light yield and excellent resolution. Moreover, its low hygroscopicity and cubic crystal structure could allow lower production costs compared to SrI2 or LaBr3. Luminescence of Cs2HfCl6 is commonly attributed to STEs. However, the luminescence of Cs2HfCl6 shows complex structure and temperature dependence. This might be explained by the presence of zirconium which is a common impurity in hafnium compounds.
Permanent Link: http://hdl.handle.net/11104/0322670