Synthesis of high efficient Ca2SiO4:Eu2+ green emitting phosphor by a liquid phase precursor method

被引：59

作者：

Luo, Y. Y. ^{[1
]}

Jo, D. S. ^{[1
]}

Senthil, K. ^{[1
]}

Tezuka, S. ^{[2
]}

Kakihana, M. ^{[2
]}

Toda, K. ^{[3
]}

Masaki, T. ^{[1
]}

Yoon, D. H. ^{[1
,4
]}

机构：

[1] Sungkyunkwan Univ, Sch Adv Mat Sci & Engn, Suwon 440746, South Korea

[2] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Aoba Ku, Sendai, Miyagi 9808577, Japan

[3] Niigata Univ, Dept Chem & Chem Engn, Fac Engn, Niigata 9502181, Japan

[4] Sungkyunlcwan Univ, SKKU Adv Inst Nanotechnol SAINT, Suwon 440746, South Korea

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 2012年 / 189卷

关键词：

Silicate phosphor; White LEDs; Luminescence; Eu2+ concentration; Thermal analysis; LUMINESCENT PROPERTIES; DICALCIUM SILICATE; CRYSTAL-STRUCTURE; HIGH-TEMPERATURE; RED PHOSPHOR; CELLULOSE; TRANSFORMATIONS; BETA-CA2SIO4;

D O I：

10.1016/j.jssc.2011.11.046

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Green emitting Eu2+-doped Ca2SiO4 phosphors were synthesized by three different methods (a conventional solid state reaction (SSR) method, a novel liquid phase precursor approach using SiO2 sol (LPP-SiO2(sol)) and water-soluble silicon compound (LPP-WSS)). The obtained phosphors exhibited a broad excitation spectrum ranging from 225 to 450 nm and a strong green emission peak at 502 nm due to the 4f(6)5d(1)-> 4f(7)(S-8(7/2)) transition of Eu2+. The highest luminescent intensity was obtained for the samples fired at 1100 degrees C. The dependence of luminescence properties on Eu2+ concentration for the phosphors synthesized using LPP-WSS method was also examined from 0.1 to 5.0 mol% and the maximum emission intensity was observed at 3.0 mol% Eu2+. A detailed analysis using various characterizations revealed that phosphors produced by the LPP-WSS process exhibited more homogenous phase distribution and higher luminescence intensity than those from the other two processes, which suggested the potential application of Ca2SiO4:Eu2+ in white light-emitting diodes and fluorescence lamps. (C) 2011 Elsevier Inc. All rights reserved.

引用

页码：68 / 74

页数：7

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