Luminescence and scintillation enhancement of Y2O3:Tm transparent ceramic through post-fabrication thermal processing

被引：13
作者：
Chapman, M. G. [1 ]
Marchewka, M. R. [1 ]
Roberts, S. A. [2 ]
Schmitt, J. M. [2 ]
McMillen, C. [3 ]
Kucera, C. J. [2 ]
DeVol, T. A. [4 ]
Ballato, J. [1 ,2 ]
Jacobsohn, L. G. [1 ,2 ]
机构：
[1] Clemson Univ, Dept Mat Sci & Engn, Clemson, SC 29634 USA
[2] Clemson Univ, COMSET Ctr Opt Mat Sci & Engn Technol, Anderson, SC 29625 USA
[3] Clemson Univ, Dept Chem, Clemson, SC 29634 USA
[4] Clemson Univ, Environm Engn & Earth Sci Dept, Clemson, SC 29625 USA
来源：
JOURNAL OF LUMINESCENCE | 2015年 / 165卷
基金：
美国国家科学基金会;
关键词：
Transparent ceramic; Y2O3:Tm; Scintillation; Luminescence; Thermal processing; SINGLE-CRYSTAL GROWTH; RARE-EARTH IONS; OPTICAL-CONSTANTS; SPECTRA; SC2O3; TM3+; THERMOLUMINESCENCE; SPECTROSCOPY; SESQUIOXIDES; LU2O3;
D O I：
10.1016/j.jlumin.2015.03.041
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The effects of post-fabrication thermal processing in O-2 flux on the luminescence and scintillation of a Y2O3:Tm transparent ceramic were investigated. The results showed that the strategy of post-fabrication processing can be beneficial to the performance of the ceramics, depending on the cumulative processing time. After the first hour of processing, about 40% enhancement in the luminescence output together with about 20% enhancement in the scintillation light yield were obtained. The enhancements were tentatively assigned to the incorporation of oxygen into vacancy sites. Longer cumulative processing times lead to the incorporation of oxygen as interstitials that is detrimental to scintillation light yield but not to luminescence output. This work also revealed that thermoluminescence measurements are a useful tool to predict scintillation light yield of Y2O3:Tm. (C) 2015 Elsevier B.V. All rights reserved.
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收藏
页码：56 / 61
页数：6
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