Synthesis and luminescence properties of colloidal YVO4:Eu phosphors

被引：487

作者：

Huignard, A ^{[1
]}

Gacoin, T ^{[1
]}

Boilot, JP ^{[1
]}

机构：

[1] Ecole Polytech, Phys Mat Condensee Lab, Grp Chim Solide, CNRS,UMR 7643, F-91128 Palaiseau, France

来源：

CHEMISTRY OF MATERIALS | 2000年 / 12卷 / 04期

关键词：

D O I：

10.1021/cm990722t

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：

Concentrated colloidal solutions of well-dispersed YVO4:Eu nanoparticles are synthesized by precipitation reactions at room temperature and stabilized by sodium hexametaphosphate. X-ray diffraction and electron microscopy characterizations show that the crystalline nanoparticles exhibit an ellipsoidal form with two characteristic dimensions of around 15 and 30 nm. In comparison with the bulk, a lower luminescence efficiency as well as a higher concentration quenching are observed. These deviations are explained as the variations of some characteristics of the colloidal samples, such as the crystallinity and the surface chemistry. When these parameters are optimized, the quantum yield of the luminescence reaches 38% for the nanoparticles containing a europium concentration of 15%.

引用

页码：1090 / 1094

页数：5

共 24 条

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