The role of cerium variable charge state in the luminescence and scintillation mechanism in complex oxide scintillators: the effect of air annealing

0458384 - FZÚ 2017 RIV NL eng J - Článek v odborném periodiku
Nikl, Martin - Babin, Vladimir - Mareš, Jiří A. - Kamada, K. - Kurosawa, S. - Yoshikawa, A. - Touš, J. - Houžvička, J. - Blažek, K.
The role of cerium variable charge state in the luminescence and scintillation mechanism in complex oxide scintillators: the effect of air annealing.
Journal of Luminescence. Roč. 169, Jan (2016), s. 539-543. ISSN 0022-2313. E-ISSN 1872-7883.
[International Conference on Luminescence and Optical Spectroscopy of Condensed Matter /17./. Wroclaw, 13.07.2014-18.07.2014]
Grant CEP: GA ČR GA13-09876S; GA TA ČR TA04010135
Institucionální podpora: RVO:68378271
Klíčová slova: scintillator * aluminum garnets * perovskites * air annealing
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
Impakt faktor: 2.686, rok: 2016

The influence of annealing in air at elevated temperatures on the absorption, luminescence andscintillation characteristics was studied for a set of Ce-doped aluminum garnet and perovskite singlecrystals. Positive effects consisting mainly in increase of light yield and decrease of afterglow were foundto varying extent in all the materials. It is explained by the positive role of created stable Ce4+ center in scintillation mechanism and by decrease of deep trap concentration based on oxygen vacancies.

Trvalý link: http://hdl.handle.net/11104/0258650