Suppressing the phase transformation and enhancing the orange luminescence of (Sr,Ba)3SiO5:Eu2+ for application in white LEDs

被引：16

作者：

Chen, Lei ^{[1
,2
]}

Luo, Anqi ^{[1
]}

Jiang, Yang ^{[1
]}

Liu, Fayong ^{[1
]}

Deng, Xiaorong ^{[1
]}

Xue, Shaochan ^{[1
]}

Chen, Xinhui ^{[1
]}

Zhang, Yao ^{[1
]}

机构：

[1] Hefei Univ Technol, Sch Mat Sci & Engn, Hefei 230009, Peoples R China

[2] Semicond & Optoelect Technol Engn Res Ctr Anhui P, Wuhu 241000, Peoples R China

来源：

MATERIALS LETTERS | 2013年 / 106卷

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

Phosphor; Luminescence; Phase transformation; Sr3SiO5:Eu2+; LIGHT-EMITTING-DIODES; PHOSPHOR; PHOTOLUMINESCENCE; EMISSION;

D O I：

10.1016/j.matlet.2013.05.057

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

An orange phosphor Sr3SiO5:Eu2+ was synthesized by high temperature solid state reaction. The coexisted phase Sr2SiO4:Eu2+ tended to compromise the whole luminescent properties. Sr2SiO4:Eu2+ was formed as a result of the decomposition of Sr3SiO5:Eu2+ during the cooling process, which emitted green light at about 560 nm. Furthermore, the decomposition degree of Sr3SiO5:Eu2+ phase was related to the temperature. Microstructure analysis suggested that slight stoichiometric excess of SrO in the raw materials was able to suppress the decomposition of Sr3SiO5:Eu2+, thus leading to enhanced emission intensity. A new viewpoint was proposed to explain the mechanism of decomposition in the synthesis process of Sr3SiO5:Eu2+. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：428 / 431

页数：4

共 11 条

[1] Emission Band Change of (Sr1-xMx)3SiO5:Eu2+ (M=Ca, Ba) Phosphor for White Light Sources Using Blue/Near-Ultraviolet LEDs [J].

Jang, Ho Seong ;

Won, Yu-Ho ;

Vaidyanathan, Sivakumar ;

Kim, Dong Hyuk ;

Jeon, Duk Young .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2009, 156 (06) :J138-J142

[2] Photoluminescence properties of Eu2+-activated Sr3SiO5 phosphors [J].

Jee, Soon-Duk ;

Park, Joung Kyu ;

Lee, Sang-Hyuk .

JOURNAL OF MATERIALS SCIENCE, 2006, 41 (10) :3139-3141

[3] Photoluminescent properties of Sr2SiO4:Eu2+ phosphors prepared by solid-state reaction method [J].

Lee, Jee Hee ;

Kim, Young Jin .

MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY, 2008, 146 (1-3) :99-102

[4] Enhanced photoluminescence of Sr3SiO5:Ce3+ and tuneable yellow emission of Sr3SiO5:Ce3+,Eu2+ by Al3+ charge compensation for W-LEDs [J].

Luo, Hongde ;

Liu, Jie ;

Zheng, Xiao ;

Han, Lixian ;

Ren, Kuaixia ;

Yu, Xibin .

JOURNAL OF MATERIALS CHEMISTRY, 2012, 22 (31) :15887-15893

[5]

Nakamura Y., 2011, MAT SCI ENG B, V18

[6] Embodiment of the warm white-light-emitting diodes by using a Ba2+ codoped Sr3SiO5:Eu phosphor -: art. no. 043511 [J].

Park, JK ;

Choi, KJ ;

Yeon, JH ;

Lee, SJ ;

Kim, CH .

APPLIED PHYSICS LETTERS, 2006, 88 (04) :1-3

[7] Application of strontium silicate yellow phosphor for white light-emitting diodes [J].

Park, JK ;

Kim, CH ;

Park, SH ;

Park, HD ;

Choi, SY .

APPLIED PHYSICS LETTERS, 2004, 84 (10) :1647-1649

[8] White LED with high color rendering index based on Ca8Mg(SiO4)4Cl2:Eu2+ and ZnCdTe/CdSe quantum dot hybrid phosphor [J].

Wang, Rongfang ;

Zhang, Jilin ;

Xu, Xianmei ;

Wang, Yilin ;

Zhou, Liya ;

Li, Bin .

MATERIALS LETTERS, 2012, 84 :24-26

[9]

Wang XC, 2012, CHINESE J INORG CHEM, V28, P1570

[10] NaEu0.96SM0.04(MoO4)2 as a promising red-emitting phosphor for LED solid-state lighting prepared by the Pechini process [J].

Wang, Zhengliang ;

Liang, Hongbin ;

Zhou, Liya ;

Wang, Jing ;

Gong, Menglian ;

Su, Qlang .

JOURNAL OF LUMINESCENCE, 2008, 128 (01) :147-154

← 1 2 →