The δ value dependence of photoluminescence in green-emitting Ba3Si6O12-δN2+2/3δ:Eu2+ phosphors for white light-emitting diodes

被引：4
作者：
Chen, Guantong [1 ,2 ]
Zhuang, Weidong [1 ,2 ]
Hu, Yunsheng [1 ,2 ]
Liu, Yuanhong [1 ,2 ]
Liu, Ronghui [1 ,2 ]
He, Huaqiang [1 ,2 ]
机构：
[1] Gen Res Inst Nonferrous Met, Natl Engn Res Ctr Rare Earth Mat, Beijing 100088, Peoples R China
[2] Grirem Adv Mat Co Ltd, Beijing, Peoples R China
来源：
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 2013年 / 24卷 / 06期
基金：
国家高技术研究发展计划(863计划); 中国国家自然科学基金;
关键词：
LUMINESCENCE; EARTH; FLUORESCENCE; BA;
D O I：
10.1007/s10854-013-1191-5
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Green emitting Eu2+-doped Ba3Si6O12-delta N2+2/3 delta phosphors with delta value varying in the range of -0.6 to 1.8 were synthesized by firing the raw materials of alpha-Si3N4, SiO2, BaCO3 and Eu2O3 at 1,350 A degrees C for 12 h under a N-2/H-2 atmosphere. The solid-solution and luminescence properties of as-prepared Ba3Si6O12-delta N2+2/3 delta :Eu2+ phosphors were investigated by XRD, O/N automatic analyzer and UV-Vis spectrophotometer. The composition-dependent solid solution of Ba3Si6O12-delta N2+2/3 delta with small range of delta is established. The emission wavelength with a range of 522-545 nm by varying delta value as a function of dopant Eu2+ is observed in this phosphor. The emission band shows a shift to higher energy and a diverse quenching concentration with an increase of N/O ratio in Ba3Si6O12-delta N2+2/3 delta :Eu2+ phosphors. The measured results suggest that Ba3Si6O12-delta N2+2/3 delta :Eu2+ possesses broad applications as an effective green phosphor in producing white light-emitting diodes.
引用
收藏
页码：2176 / 2181
页数：6
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