Ho.sup.3+./sup. codoping of GGAG:Ce,Mg: Acceleration of decay by non-radiative energy transfer

0521890 - FZÚ 2020 RIV PL eng A - Abstrakt
Páterek, Juraj - Boháček, Pavel - Trunda, Bohumil - Kučerková, Romana - Beitlerová, Alena - Nikl, Martin
Ho³⁺ codoping of GGAG:Ce,Mg: Acceleration of decay by non-radiative energy transfer.
Proceedings of the international symposium on optical materials (ISOM08). Wrocław: University of Wroclaw, 2019 - (Guzik, M.; Cybińska, J.). s. 165-165. ISBN 978-83-60043-36-3.
[International Symposium on Optical Materials (ISOM08) /8./. 09.06.2019-14.06.2019, Wroclaw]
Grant CEP: GA MŠMT EF16_013/0001406
Grant ostatní: OP VVV - SAFMAT(XE) CZ.02.1.01/0.0/0.0/16_013/0001406
Institucionální podpora: RVO:68378271
Klíčová slova: non-radiative energy transfer * GAGG:Ce fast scintillator
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)

GAGG:Ce is a fast scintillator recently developed as a product of “bandgap engineering” strategy applied on oxide garnet scintillators. The GAGG:Ce possesses good mechanical and chemical properties and radiation hardness of oxide garnets together with high density which makes it a promising candidate for various applications including medical imaging. Recently published study on Er3+ codoping of YAG:Ce presented an acceleration of Ce3+ inherent decay time due to a non radiative transfer of excitation energy from Ce3+ to the Er3+ codopant. The mechanism leads to acceleration of scintillation response either. In this work we present acceleration of response of GAGG:Ce,Mg induced by Ho3+ codoping. The study is performed on a set of Czochralski grown crystals doped with a wide range of Ho3+ concentrations and presents the effects of Ho3+ codoping on photoluminescence and scintillation properties of the material.

Trvalý link: http://hdl.handle.net/11104/0306437