Emission properties and site occupation of Sm3+ ion doped Lu2O3 translucent ceramics

被引：12

作者：

Gheorghe, C. ^{[1
]}

Lupei, A. ^{[1
]}

Voicu, F. M. ^{[1
,2
]}

Tiseanu, C. ^{[1
]}

机构：

[1] Natl Inst Laser Plasma & Radiat Phys, ECS Lab, Bucharest 077125, Romania

[2] Univ Bucharest, Fac Phys, Bucharest, Romania

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2014年 / 588卷

关键词：

Sm3+ : Lu2O3 translucent ceramic; Absorption; Emission; Time-resolved spectroscopy; Kinetics; ENERGY-TRANSFER; SPECTROSCOPIC PROPERTIES; OPTICAL-PROPERTIES; Y2O3; NANOCRYSTALLINE; DEPENDENCE; C-2;

D O I：

10.1016/j.jallcom.2013.11.093

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

High resolution spectroscopic measurements from low to room temperatures of Sm3+:Lu2O3 microcrystalline translucent ceramics, prepared by solid-state reaction method, were performed. The presence of Sm3+ in both crystallographic sites of C-2 and C-3i symmetry in Lu2O3 was demonstrated. Though the spectra are dominated by electric-dipole transitions of C-2 centers, Sm3+ in centrosymmetric sites of C-3i symmetry was detected in magnetic-dipole allowed transitions (Delta J = 0, +/- 1) with significant oscillator strengths, (4)G(5/2) -> H-6(5/2), H-6(7/2) in emission and H-6(5/2) -> F-4(5/2) in excitation spectra by a quasi-selective excitation time-resolved method at 300 K. Spectral parameters such energy level schemes, concentration dependence of emission kinetics and emission quantum efficiency specific to each center are provided. (C) 2013 Elsevier B. V. All rights reserved.

引用

页码：388 / 393

页数：6

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