On the role of the network modifier PbO in Sm3+-doped borate glasses

被引：26

作者：

Krause, S. ^{[1
]}

Pfau, C. ^{[2
]}

Dyrba, M. ^{[1
,2
]}

Miclea, P. -T. ^{[1
,3
]}

Schweizer, S. ^{[1
,4
]}

机构：

[1] Fraunhofer Ctr Silicon Photovolta CSP, D-06120 Halle, Saale, Germany

[2] Univ Halle Wittenberg, Ctr Innovat Competence SiLinano, D-06120 Halle, Saale, Germany

[3] Univ Halle Wittenberg, Inst Phys, D-06120 Halle, Saale, Germany

[4] South Westphalia Univ Appl Sci, Dept Elect Engn, D-59494 Soest, Germany

来源：

JOURNAL OF LUMINESCENCE | 2014年 / 151卷

关键词：

Borate glasses; Samarium doping; Lead oxide doping; Energy transfer; Lifetime; Fluorescence; LEAD BORATE; SM3+; IONS;

D O I：

10.1016/j.jlumin.2014.01.067

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A series of Sm3+-doped lead borate glasses with a lead oxide (PbO) content varying from 20 mol% to 80 mol% and a samarium oxide (Sm2O3) content of 1 mol% is investigated. In addition to the network changes in the glass structure, the lead doping has a significant influence on the fluorescence properties of Sm3+ and on the tuneable intrinsic fluorescence of Pb2+ itself. The Pb2+ excitation band shifts monotonously to lower energies; its intensity is significantly reduced for a PbO content of 50 mol% and more. For a concentration of 30 mol%, the Pb2+ emission overlaps with the intense H-6(5/2) to P-6(5/2) Sm3+ excitation band enabling for radiative and non-radiative energy transfers. Lifetime measurements of excited Sm3+ show in all cases non-single exponential decay and were fitted by the Inokuti-Hirayama model indicating non-radiative dipole-dipole interaction between neighbouring Sm3+ ions. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：29 / 33

页数：5

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