Synthesis and optical properties of novel red phosphors Sr3MoO6:Eu3+ with highly enhanced emission by W6+ doping

被引:29
作者
Jing, Lindan [1 ]
Liu, Xiaohua [1 ]
Li, Yuntong [1 ]
机构
[1] Guangdong Univ Technol, Sch Phys & Optoelect Engn, Guangzhou 510006, Guangdong, Peoples R China
关键词
Phosphor; Photoluminescence; Sr3MoO6:Eu3+; PHOTOLUMINESCENCE PROPERTIES; COPRECIPITATION SYNTHESIS; EMITTING PHOSPHOR; LUMINESCENCE; EU3+; LN(3+);
D O I
10.1016/j.jlumin.2014.10.038
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Sr3-xEuxMoO6 and Sr2.7Eu0.3Mo1-yWyO6 red phosphors were successfully synthesized by solid-state reaction method at 1260 degrees C for 6 h. The photoluminescence (PL) properties of Eu3+ in this phosphor material were investigated by analyzing the excitation and emission spectra and the effect of Eu3+ concentration. X-ray diffraction (XRD) patterns indicate the formation of Sr3MoO6:Eu3+ pure phase. The excitation and emission spectra demonstrate that 30 mol% Eu3+ :Sr3MoO6 shows a broad charge-transfer (CT) band at around 365 nm and an intense red emission (616 nm, D-5(0)-> F-7(2) transition), with Commission Internationale de l'Eclairage (CIE) chromaticity coordinates (0.619, 0.376). The substitution of Mo6+ with W6+ results in a considerable enhancement of luminescence intensity and improved red color purity. All the results imply that the studied phosphors may be a promising red component for the application in the white light emitting diodes. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码:351 / 355
页数:5
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