YAG:Ce codoped with Ho.sup.3+./sup. and Er.sup.3+./sup.:energy transfer and acceleration of Ce.sup.3+./sup. decay

0521924 - FZÚ 2020 RIV PL eng A - Abstrakt
Páterek, Juraj - Pokorný, Martin - Valková, S. - Sýkorová, S. - Touš, J. - Houžvička, J. - Nikl, Martin
YAG:Ce codoped with Ho³⁺ and Er³⁺:energy transfer and acceleration of Ce³⁺ decay.
The 2018 Europhysical Conference on Defects in Insulating Materials - Book of Abstracts. Bydgoszcz: University of Bydgoszcz, 2018. s. 123-123.
[Europhysical Conference on Defects in Insulating Materials (EURODIM 2018). 08.07.2018-13.07.2018, Bydgoszcz]
Grant CEP: GA MŠMT EF16_013/0001406; GA ČR GA16-15569S
GRANT EU: European Commission(XE) 644260 - INTELUM
Grant ostatní: OP VVV - SAFMAT(XE) CZ.02.1.01/0.0/0.0/16_013/0001406
Institucionální podpora: RVO:68378271
Klíčová slova: energy transfer * radiation detection * photoluminescence
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
http://eurodim2018.pl/conf-data/eurodim2018/files/EURODIM%202018-book%20of%20abstracts.pdf

Ce3+ activated YAG is a well known luminescent material that found applications in many fields. Stable growth of YAG:Ce single crystal, chemical and mechanical stability, radiation hardness, relatively good light yield and fast decay of Ce3+ makes this material ideal also for application in radiation detection, particularly in detection of charged particles, as a scintillator. In this, work we present a novel approach that enables further acceleration of activator inherent decay, based on an embedding a proper additional luminescence center into the system. We report application of this principle on YAG:Ce single crystal codoped with Ho3+ and Er3+. Photoluminescence properties, with the main focus on Ce3+ decay kinetics, were studied in a wide range of codopant concentrations. Significant acceleration was achieved in both systems. Decay kinetics were analyzed using Förster-Dexter model. The extracted results can be used for precise decay time tailoring of Ce3+.

Trvalý link: http://hdl.handle.net/11104/0306478