Synthesis and characterization of Zn2GeO4:Mn2+ phosphor for field emission displays

被引：32

作者：

Zhang, Qiuhong ^{[1
,2
]}

Wang, Jing ^{[1
]}

机构：

[1] Sun Yat Sen Univ, Sch Chem & Chem Engn, State Key Lab Optoelect Mat & Technol, Minist Educ,Key Lab Bioinorgan & Synthet Chem, Guangzhou 510275, Guangdong, Peoples R China

[2] Guangzhou Res Inst Nonferrous Met, Rear Earth Met Res Dept, Guangzhou 510651, Guangdong, Peoples R China

来源：

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2012年 / 108卷 / 04期

关键词：

LOW-VOLTAGE CATHODOLUMINESCENCE; ZNGA2O4; PHOSPHOR; FILM; BLUE; LUMINESCENCE;

D O I：

10.1007/s00339-012-7003-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Zn2-2xMn2xGeO4 (x = 0, 0.001, 0.01) phosphors were prepared by conventional solid state reaction technique. X-ray powder diffraction (XRD), field emission scanning electron microscopy (FE-SEM), diffuse reflection spectra, photoluminescence (PL), and cathodoluminescence (CL) spectroscopy were utilized to characterize the synthesized phosphors. The Mn2+-activated Zn2GeO4 phosphors exhibit narrow emission band at 532 nm under the excitation of ultraviolet light, which due to the T-4(1)((4)G)-(6)A(1)(S-6) transition of Mn2+ ions. Also it is observed that there exists energy transfer between the Zn2GeO4 host lattice and the activator (Mn2+). Under excitation of low-voltage electron beams, Zn2GeO4:Mn2+ shows strong green emission band dominating at 535 nm, corresponding to the T-4(1)((4)G)-(6)A(1)(S-6) emission of Mn2+ ions. The emission intensity and chromaticity coordinates of Zn2GeO4:Mn2+ as a function of accelerating voltage and the filament current were also investigated.

引用

页码：943 / 948

页数：6

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