Formation condition of red Ce3+ in Ca3Sc2Si3O12:Ce3+, N3- as a full-color-emitting light-emitting diode phosphor

被引：9

作者：

Qiao, Jun ^{[1
,2
]}

Zhang, Jiahua ^{[1
]}

Zhang, Xia ^{[1
]}

Hao, Zhendong ^{[1
]}

Deng, Wenyuan ^{[1
]}

Liu, Yongfu ^{[1
]}

Zhang, Liangliang ^{[1
,2
]}

Zhang, Ligong ^{[1
]}

Zhao, Haifeng ^{[1
]}

Lin, Jian ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, State Key Lab Luminescence & Applicat, Changchun Inst Opt Fine Mech & Phys, Changchun 130033, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100039, Peoples R China

来源：

OPTICS LETTERS | 2013年 / 38卷 / 06期

基金：

中国国家自然科学基金;

关键词：

GARNETS;

D O I：

10.1364/OL.38.000884

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this Letter, we study diffuse reflectance and photoluminescence spectra for O2- fully coordinated green-emitting Ce3+ and N3- partially coordinated red Ce3+ in Ca3Sc2Si3O12(CSS):Ce3+, N3- as a function of CeO2 and Si3N4 contents in the raw material. Our results indicate that the presence of N3- can enhance Ce3+ solubility in the form of red centers in CSS. At low Ce3+ concentration, green Ce3+ forms preferentially while red Ce3+ hardly forms even if N3- content in the raw material is sufficient. There exists a threshold concentration of green Ce3+; only beyond that can color tunable luminescence with enriched red emission be achieved. Energy transfer from green Ce3+ to red Ce3+ is also studied, as only the green Ce3+ is excited by blue light. (C) 2013 Optical Society of America

引用

页码：884 / 886

页数：3

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