Color tunable emission via Ce3+-Tb3+ energy transfer in CaHfO3 phosphor

被引：4
作者：
Shi, Yurong [1 ]
Cheng, Pan [1 ]
Chen, Jia [2 ]
Tong, Yuping [1 ]
Wang, Chuang [3 ]
机构：
[1] North China Univ Water Resources & Elect Power, Sch Mat Sci & Engn, Zhengzhou 450000, Henan, Peoples R China
[2] Zhoukou Normal Univ, Key Lab Rare Earth Funct Mat & Applicat, Zhoukou 466001, Peoples R China
[3] Bohai Univ, Coll New Energy, Bohai 11704043, Peoples R China
来源：
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 2019年 / 30卷 / 19期
基金：
中国国家自然科学基金;
关键词：
THERMAL-STABILITY; GREEN PHOSPHOR; LUMINESCENCE; CE3+; PHOTOLUMINESCENCE; TB3+; SR;
D O I：
10.1007/s10854-019-02131-0
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：
A color tunable emission was obtained in CaHfO3:Ce3+,Tb3+ phosphor. XRD, luminescence spectra, decay curves, temperature-dependent emission spectra and quantum efficiency were used to characterize the structure and luminescence properties. Under 330 nm excitation, the Ce3+ singly doped CaHfO3 samples exhibited intense blue emission. The emission intensity reached the maximum at 1 mol% Ce3+. CaHfO3:0.1Ce(3+) samples possessed high quantum efficiency of 52.05%. In Tb3+ co-doped CaHfO3:Ce3+ phosphors, the emission position of Ce3+ blue shifts slightly due to weaker crystal field strength around Ce3+. Besides, the energy transfer between Ce3+ and Tb3+ leads to tunable emission colors from blue to cyan, then to green. The energy transfer efficiency and thermal stability are investigated in detail.
引用
收藏
页码：17798 / 17803
页数：6
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