A novel method for extracting oscillator strength of select rare-earth ion optical transitions in nanostructured dielectric materials

被引：16

作者：

Muenchausen, R. E. ^{[1
]}

Jacobsohn, L. G. ^{[1
]}

Bennett, B. L. ^{[1
]}

McKigney, E. A. ^{[1
]}

Smith, J. F. ^{[1
]}

Cooke, D. W. ^{[1
]}

机构：

[1] Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA

来源：

SOLID STATE COMMUNICATIONS | 2006年 / 139卷 / 10期

关键词：

nanophosphor; rare earth; oscillator strength; photoluminescence;

D O I：

10.1016/j.ssc.2006.07.022

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

A new technique to obtain the oscillator strength of select rare-earth optical transitions in nanostructured dielectric materials (nanophosphors) is presented. It is based on the experimentally observed nanophosphor lifetime dependence on the embedding medium. A constant oscillator strength and parity-allowed electric dipole transitions of the RE ion emission are assumed. The oscillator strength is obtained from the slope of the 1/tau(ij) vs. n(n(2) + 2)(2) plot, where tau(ij) is the radiative lifetime of transition between states i and j, and n is the index of refraction of the embedding medium. The use of the technique is illustrated for the Y2SiO5:Ce nanophosphor. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：497 / 500

页数：4