Size dependent luminescence of nanocrystalline Y2O3:Eu and connection to temperature stimulus

被引：20

作者：

Zhang Wei-Wei ^{[1
]}

Yin Min ^{[2
]}

He Xing-Dao ^{[1
]}

Gao Yi-Qing ^{[1
]}

机构：

[1] Nanchang Hangkong Univ, Aeronaut Sci Key Lab Aeronaut Testing & Evaluat, Nanchang 330063, Peoples R China

[2] Univ Sci & Technol China, Dept Phys, Hefei 230026, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2011年 / 509卷 / 08期

关键词：

Nanostructured materials; Luminescence; Size effect; Temperature dependence; OPTICAL-PROPERTIES; CRYSTAL-STRUCTURE; NANOPARTICLES; NANOPOWDERS; ALUMINA; ENERGY; IONS; SITE; EU3+;

D O I：

10.1016/j.jallcom.2010.12.110

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 the emission spectra of nanocrystalline Y2O3:Eu with decreasing the particle size, the D-5(0)-F-7(0) transition of Eu3+ shifts towards blue. This size effect is explained by lattice expansion of the nanocrystallines, more precisely, by larger Eu-O distance. Meanwhile, increasing temperature also expands the lattice constant and shifts the emission peak to blue. Then nephelauxetic effect is employed to organize the size effect and temperature dependence. It is also introduced to indicate the change of Eu3+ coordination number in the nanosized phosphor. Based on the experimental results, possible applications of temperature sensing and stress mapping with Eu3+ doped nanocrystalline phosphors are proposed. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：3613 / 3616

页数：4

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