Synthesis optimization and charge carrier transfer mechanism in LiLuSiO4:Ce, Tm storage phosphor

Journal article (2019)

Authors

Anna Dobrowolska External organisation
A.J.J. bos RST/Fundamental Aspects of Materials and Energy - AS , RST/Luminescence Materials - AS
P. Dorenbos RST/Luminescence Materials - AS
Research Group
RST/Luminescence Materials (AS) (TU Delft)
Copyright: © 2019 Anna Dobrowolska, A.J.J. bos, P. Dorenbos
DOI: https://doi.org/10.1016/j.radmeas.2019.106147
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Published Date

2019

Language

English

Faculty

Applied Sciences

Department

RST/Radiation, Science and Technology

Research Group

RST/Luminescence Materials

Abstract

LiLuSiO4:Ce and LiLuSiO4:Ce, Tm show very efficient charge carrier storage properties upon beta irradiation after samples have received treatment in vacuum. They outperform the commercial storage phosphor BaFBr(I):Eu2+ in many aspects. The influence of the synthesis conditions, Ce and Tm concentration, nonstoichiometry and codoping with Ca, Hf, Al and Ge are reported. Based on the results of the synthesis optimization, thermoluminescence (TL) emission and TL excitation spectra a mechanism of charge carrier transfer, storage, and recombination during irradiation and thermal or optical readout is proposed.

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