Radiative parameters of Eu3+ Ions in CdSe nanocrystal containing silica matrices

被引：12

作者：

Jose, G

Thomas, V

Fernandez, TT

Adiyodi, AK

Joseph, C

Ittyachen, MA

Unnikrishnan, NV

机构：

[1] Mahatma Gandhi Univ, Sch Pure & Appl Phys, Kottayam 686560, India

[2] Cochin Univ Sci & Technol, Dept Instrumentat, Cochin 22, Kerala, India

来源：

PHYSICA B-CONDENSED MATTER | 2005年 / 357卷 / 3-4期

关键词：

glass; sol-gel processing; optical absorption; nanocrystalline materials; fluorescence; rare-earth electronic structure; J-O parameters;

D O I：

10.1016/j.physb.2004.11.075

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Optical absorption and emission spectra of EU3+/CdSe nanocrystallites and Eu3+ in sol-gel silica glass samples are being carried out. From the measured intensities of various absorption bands and applying thermal correction, the three Judd-Ofelt parameters Omega(2), Omega(4) and Omega(6) are evaluated for these glasses. From this theory, various radiative properties like transition probability A, branching ratio beta, the radiative lifetime tau(R), absorption cross-section sigma(a) and the emission cross-section sigma(E) for various levels of these glasses are determined. (c) 2004 Elsevier B.V. All rights reserved.

引用

页码：270 / 276

页数：7

共 20 条

[1] Are the Judd-Ofelt intensity parameters sensitive enough to reflect small compositional changes in lanthanide-doped glasses? [J].