Structure and Photoluminescence of Eu2+ Doped Sr2Al2SiO7 Cyan-Green Emitting Phosphors

被引：19

作者：

Lu, Fa-Chun ^{[1
]}

Bai, Li-Jing ^{[1
]}

Dang, Wei ^{[1
]}

Yang, Zhi-Ping ^{[1
]}

Lin, Peng ^{[1
]}

机构：

[1] Hebei Univ, Coll Phys Sci & Technol, Hebei Key Lab Opt Elect Informat & Mat, Baoding 071002, Peoples R China

来源：

ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY | 2015年 / 4卷 / 02期

基金：

中国国家自然科学基金;

关键词：

LUMINESCENCE; ENERGY;

D O I：

10.1149/2.0151502jss

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Eu2+ doped Sr2Al2SiO7 cyan-green emitting phosphors have been synthesized with solid-state reaction method. With Rietveld refinement technique, Sr2Al2SiO7 equivalent sites and atomic positions were acquired. The Sr2Al2SiO7:Eu2+ photoluminescence at room and high temperature were investigated. This phosphor shows the Eu2+ broad band excitation and emission spectra corresponding to Eu2+ transitions between the 4f(7) ground state and the lower 4f(6)5d(1) crystal splitting states. The luminescent properties as a function of Eu2+ concentration were investigated. The mechanism of dipole-dipole interaction dominates the non-radiative energy transfer between the Eu2+ luminescent centers and causes the concentration quenching of this phosphor. The radiation re-absorption is proposed to be the mechanism for the emission red shift. The emission band shows slight blue shift with increased temperature. Sr2Al2SiO7:Eu2+ is a kind of promising blue to cyan emitting phosphor. (C) 2014 The Electrochemical Society. All rights reserved.

引用

页码：R27 / R30

页数：4

共 20 条

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