Size-dependent electronic transition rates in cubic nanocrystalline europium doped yttria

被引：80

作者：

Song, HW ^{[1
]}

Wang, JW ^{[1
]}

Chen, BJ ^{[1
]}

Peng, HS ^{[1
]}

Lu, SZ ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Opt Fine Mech & Phys, Key Lab Excited State Phys, Changchun 130022, Peoples R China

来源：

CHEMICAL PHYSICS LETTERS | 2003年 / 376卷 / 1-2期

关键词：

D O I：

10.1016/S0009-2614(03)00810-8

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：

In cubic nanocrystalline as well as polycrystalline Y2O3:Eu3+ prepared by combustion, the radiative transition rate of D-5(1)-F-7(1) and the nonradiative relaxation rate of D-5(1)-D-5(0) were obtained by measuring the temperature-dependence of emission intensity and lifetime. The results indicate that the radiative and nonradiative rates both increase with decreasing particle size. The increase of radiative transition rate was attributed to the lower symmetry surrounding the Eu3+ ions, while the increase of nonradiative relaxation rate to the additional nonradiative relaxation channels caused by surface defects. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：1 / 5

页数：5

共 21 条

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