Novel yellow-emitting phosphors of Ca5M4(VO4)6 (M=Mg, Zn) with isolated VO4 tetrahedra

被引：106

作者：

Huang, Yanlin ^{[1
]}

Yu, Young Moon ^{[2
]}

Tsuboi, Taiju ^{[3
]}

Seo, Hyo Jin ^{[4
]}

机构：

[1] Soochow Univ, Coll Chem Chem Engn & Mat Sci, Suzhou 215123, Peoples R China

[2] Pukyong Natl Univ, LED Marin Convergence Technol R&BD Ctr, Pusan 608739, South Korea

[3] Kyoto Sangyo Univ, Fac Engn, Kyoto 6038555, Japan

[4] Pukyong Natl Univ, Dept Phys, Pusan 608737, South Korea

来源：

OPTICS EXPRESS | 2012年 / 20卷 / 04期

基金：

新加坡国家研究基金会;

关键词：

VANADATE; LUMINESCENCE; GARNET;

D O I：

10.1364/OE.20.004360

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The self-activated yellow-emitting phosphors of vanadates Ca5M4(VO4)(6) (M = Mg, Zn) were synthesized via the solid-state reaction route. The formation of single phase compound with garnet structure was verified through X-ray diffraction (XRD) studies. The excitation and emission spectra and the thermal quenching of luminescence intensities were measured. The different luminescence properties of Ca5Mg4(VO4)(6) and Ca5Zn4(VO4)(6) phosphors were presented, e. g., the spectra shift, the luminescence lifetimes, the absolute quantum efficiency, the color coordinates and the Stokes shift. This deference was discussed on the base of the relationship between the micro-structure and the charge transfer transitions in [VO4](3-) groups in the lattices. Ca5Mg4(VO4)(6) could be suggested to be a potential yellow-emitting phosphor for the application on near-UV excited white LEDs. (C)2012 Optical Society of America

引用

页码：4360 / 4368

页数：9

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