Storage effect in LiRESiO4:Ce3+, Sm3+, RE=Y,Lu phosphor

Autor:	Carel W.E. van Eijk, Bruno Viana, Pieter Dorenbos, Adrie J. J. Bos, Andrée Kahn-Harari, Piotr A. Rodnyi, Andrei V. Sidorenko
Rok vydání:	2005
Předmět:	Physics Nuclear and High Energy Physics Analytical chemistry chemistry.chemical_element Phosphor Electron Trapping Thermal treatment Oxygen Ion chemistry Irradiation Luminescence Instrumentation
Zdroj:	Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 537:81-85
ISSN:	0168-9002
DOI:	10.1016/j.nima.2004.07.239
Popis:	Good storage properties after irradiation have been observed in doubly rare-earth-doped LiRESiO4:Ce3+,Sm3+, RE=Y,Lu powders. We present strong arguments that in the studied materials Ce3+ ions play a role of hole trapping and Sm3+ ions of electron trapping centres. Additionally, oxygen vacancies are also involved in electron trapping, however they can be removed by appropriate thermal treatment. During thermal stimulation of irradiated LiRESiO4:Ce3+,Sm3+, RE=Y,Lu an electron from Sm2+ is released into the conduction band formed by SiO4 and further migrates to Ce4+ centers. This causes the TL peak at 340 K in LiLuSiO4:Ce3+,Sm3+ and at 400 K in LiYSiO4:Ce3+,Sm3+ upon heating rate of 1 Ks. Very fast and efficient photo-stimulated luminescence (PSL) have been observed upon stimulation with an IR laser (λ=830nm). The presented materials can be utilized in Image Plates for X-ray or neutron position sensitive detection.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9f0596ee3fb8512aed25fadbff665157 https://doi.org/10.1016/j.nima.2004.07.239 Zobrazit plný text záznamu Full Text from ScienceDirect