Local structure and its effect on the oscillator strengths and emission properties of Ho3+ in chalcohalide glasses

被引：27

作者：

Lee, Tae Hoon

Kwon, Yong Kon

Heo, Jong ^{[1
]}

机构：

[1] Pohang Univ Sci & Technol, Ctr Informat Mat, Pohang 790784, Gyeongbuk, South Korea

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 2008年 / 354卷 / 27期

关键词：

chalcohalides; absorption; luminescence; short-range order;

D O I：

10.1016/j.jnoncrysol.2008.01.017

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The formation of structural units in Ge-Ga-S glass with CsBr addition and its effect on the optical band gap and several spectroscopic properties of Ho3+ were investigated. The optical band gap of the host glasses and the oscillator strengths of Ho3+ absorption decreased sharply when the ratio of CsBr/Ga became close to unity. These property changes were associated with the formation of structural units of [GaS3/2Br](-) and they have a crucial effect on the changes of the local structure around Ho3+ ions. The local structure was not sensitive to the As or Br addition but was critically dependent on the concentration of CsBr. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：3107 / 3112

页数：6

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