A revisit of photoluminescence property for vanadate oxides AVO3 (A:K, Rb and Cs) and M3V2O8 (M:Mg and Zn)

被引：158

作者：

Nakajima, T. ^{[1
]}

Isobe, M. ^{[2
]}

Tsuchiya, T. ^{[1
]}

Ueda, Y. ^{[2
]}

Kumagai, T. ^{[1
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Adv Mfg Res Inst, Tsukuba, Ibaraki 3058565, Japan

[2] Univ Tokyo, Mat Design & Characterizat Lab, Inst Solid State Phys, Chiba 2778581, Japan

来源：

JOURNAL OF LUMINESCENCE | 2009年 / 129卷 / 12期

关键词：

Phosphor; Vanadate; White light; VO4; Internal quantum efficiency; CRYSTAL-STRUCTURE; PHOSPHOR;

D O I：

10.1016/j.jlumin.2009.03.029

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We revisited the vanadium oxide phosphors. AVO(3) (A K, Rb, and Cs) and M3V2O8 (A center dot Mg and Zn) for a revaluation of possibility of these compounds for lighting applications, and the internal quantum efficiency (eta) and luminescent colour properties for AVO(3) (A.K, Rb, and Cs) and M3V2O8 (A:Mg, and Zn) have been presented. The AVO(3) showed the broadband emission from 380 to 800 nm, and the eta for the KVO3, RbVO3 and CsVO3 were 4%. 79% and 87%, respectively. The CIE colour coordinates are located at white region on the chromaticity diagram. The M3V2O8 (A Mg and Zn) also exhibited a quite broadband emission between 410 and 900 nm, indicating yellow luminescent colour. The Zn3V2O8 showed high eta value, 52%. compared to that of the Mg3V2O8 (eta = 6%). This enhancement of eta in the Zn3V2O8 could be due to the increasing exciton diffusion assisted by the hybridizations of Zn 3d and O 2p orbitals for the valence band, and Zn 4s and Ti 3d orbitals for the conduction band. (c) 2009 Elsevier B.V. All rights reserved

引用

页码：1598 / 1601

页数：4

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