Trapping and self-trapping in ytterbium-doped oxides with charge transfer luminescence

被引：8

作者：

Kamenskikh, I. ^{[1
]}

Pedrini, C. ^{[2
,3
]}

Petrosyan, A. ^{[4
]}

Vasil'ev, A. ^{[5
]}

机构：

[1] Moscow MV Lomonosov State Univ, Dept Phys, Moscow 119992, Russia

[2] Univ Lyon 1, F-69622 Villeurbanne, France

[3] CNRS, UMR 5620, LPCML, F-69622 Villeurbanne, France

[4] Armenian Acad Sci, Inst Phys Res, Lab Crystal Growth Luminescent Mat, Ashtarak 378410, Armenia

[5] Moscow MV Lomonosov State Univ, Skobeltsyn Inst Nucl Phys, Moscow 119992, Russia

来源：

JOURNAL OF LUMINESCENCE | 2009年 / 129卷 / 12期

基金：

俄罗斯基础研究基金会;

关键词：

Charge transfer luminescence; Ytterbium; Thermostimulated luminescence; Traps; Self-trapped holes; X-ray luminescence; Kinetic equations; YAG CRYSTALS; GARNETS; YB3+;

D O I：

10.1016/j.jlumin.2009.02.031

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Temperature dependence of the charge transfer luminescence (CTL) of Yb-doped yttrium aluminum garnet Y(3)Al(5)O(12)-Yb (YAG-Yb) and Yb-doped lutetium aluminum perovskite LuAlO(3)-Yb (LuAP-Yb) crystals under X-ray excitation and their thermostimulated luminescence are investigated in the temperature range 30-350K and compared to those of undoped crystals. Simulation using a set of kinetic equations describing the processes of creation of excitons, electron-hole pairs, their trapping and self-trapping, radiative relaxation and quenching is presented for the systems under investigation to analyze qualitatively two different types of experimentally observed temperature dependences: CTL yield decline with the temperature decrease below 110K as in case of YAG-Yb and constant yield in the same temperature range as in case of LuAP-Yb. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：1509 / 1513

页数：5

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