Influence of the Ga addition on optical properties of Pr in Ge-Sb-Se glasses

被引：10

作者：

Kim, Jung Kyun ^{[1
]}

Jin, Byeong Kyou ^{[1
]}

Chung, Woon Jin ^{[2
]}

Park, Bong Je ^{[3
]}

Heo, Jong ^{[4
]}

Choi, Yong Gyu ^{[1
]}

机构：

[1] Korea Aerosp Univ, Dept Mat Sci & Engn, Gyeonggi 412791, South Korea

[2] Kongju Natl Univ, Div Adv Mat Engn, Cheonan 330717, South Korea

[3] Elect & Telecommun Res Inst, Taejon 305600, South Korea

[4] Pohang Univ Sci & Technol, Dept Mat Sci & Engn, Gyeongbuk 790784, South Korea

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2011年 / 72卷 / 11期

关键词：

Chalcogenides; Glasses; Optical properties; FLUORESCENCE LIFETIME; TRANSITIONS; LANTHANIDE; ABSORPTION; IONS;

D O I：

10.1016/j.jpcs.2011.08.025

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Absorption and emission spectra for the H-3(4)<->(F-3(2), H-3(6)) transition of Pr3+ ions embedded in Ge-Sb-Se glasses turned out to change systematically upon the introduction of a small amout of Ga. Clear blueshift of the absorption peak wavelengths together with the decrease of absorption cross-section was evident in these glasses containing Ga. We believe that the Ga addition into the conventional covalent selenide glasses makes chemical bonds between rare earth atoms and Se atoms more ionic due to preferential location of the GaSe4 tetrahedra at the second coordination shell of a rare earth atom. Taking into consideration the hypersensitive nature of the Pr3+: H-3(4)<-> F-3(2) transition, the observed blueshift may manifest the enhanced ionicity of the chemical bonds between Pr and Se in the current Ga-containing glasses. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：1386 / 1389

页数：4

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