Afterglow Behavior, Energy Transfer and Trap States in Lu2O3:Eu Single Crystal Scintillator. (24th February 2018)

• Record Type: Journal Article
• Authors: Zhuang, Lvchao; Zhang, Zhijun; Wang, Yong; Wan, Huanhuan; Xu, Zhan; Mao, Rihua; Feng, He; Zhao, Jingtai
• Is Part Of: ECS journal of solid state science and technology. Volume 7:Number 3(2018)
• Page Start: R17
• Page End: R20
• Publication Date: 2018-02-24
• Subjects: afterlgow -- energy transfer -- trap state; Solid state chemistry -- Periodicals; Electronics -- Materials -- Periodicals; Electrochemistry -- Periodicals; 541.0421
• DOI: 10.1149/2.0161803jss
• Languages: English
• ISSNs: 2162-8777

Abstract

Abstract : A series of single crystals of Eu 3+ doped lutetium oxide, Lu2-2x Eu2x O3 (x = 0.001, 0.002, 0.005, 0.01, 0.025 and 0.05), were grown by the floating zone method. Correlated measurements of afterglow curves, photoluminescence excitation and photoluminescence, photoluminescence decay curves and thermoluminescence curves were performed. Afterglow intensity evidently decreases above 2.5% europium doping concentration. It is discussed in the light of the influence of Eu(S6 )→Eu(C2 ) energy transfer and trap states in Lu2 O3 :Eu. Thermoluminescence analysis reveals that the trap states in Lu2 O3 :Eu samples are almost the same and the afterglow difference mainly is due to the profound Eu(S6 )→Eu(C2 ) energy transfer efficiency above 2.5% Eu.