外文题目: Luminescence, scintillation, and energy transfer in SiO2-Al2O3-B2O3-Gd2O3:Ce3+,Pr3+ glasses
作者: Lertloypanyachai, Prapon; Chewpraditkul, Weerapong; Pattanaboonmee, Nakarin; Chen, Danping; Babin, Vladimir; Beitlerova, Alena; Nikl, Martin
刊名: Phys. Status Solidi A-Appl. Mat.
年: 2017 卷: 214 期: 9 文章编号：1700072
英文关键词:
Ce3+; energy transfer; luminescence; oxide glasses; Pr3+; scintillation
HIGH-SILICA GLASS; HIGH GD2O3 CONCENTRATION; GD PHOSPHATE-GLASSES; X-RAY-EXCITATION; CROSS-RELAXATION; TB; DEPENDENCE; UV
英文摘要:
Ce3+,Pr3+-codoped SiO2-Al2O3-B2O3-Gd2O3 glasses (SABG:Ce,Pr) were prepared by melt quenching under a CO reducing atmosphere. Luminescence properties were investigated under UV and X-ray excitations. A dominant emission band at 430nm belonging to the Ce3+:5d(1)4f transition was observed in the photo- and radio-luminescence spectra. The energy transfer occurs from this Ce3+ band toward the P-3(J) levels of Pr3+ with an efficiency of up to 24%, followed by the reduction of integrated luminescence intensity with an increasing Pr3+ concentration. This result is attributed to the increase in the reabsorption of Ce3+ luminescence and the non-radiative energy transfer toward the P-3(J) levels of Pr3+. The cross-relaxation process within the Pr3+ pairs can further diminish the total luminescence yield at high Pr3+ concentrations. The integral scintillation efficiency and light yield measurements were carried out and compared to the reference Bi4Ge3O12 (BGO) crystal.


文献类型: 期刊论文
正文语种: English
收录类别: SCI
DOI: 10.1002/pssa.201700072


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