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

被引：1
|
作者：
Yurong Shi
Pan Cheng
Jia Chen
Yuping Tong
Chuang Wang
机构：
[1] North China University of Water Resources and Electric Power,School of Materials Science and Engineering
[2] Zhoukou Normal University,The Key Laboratory of Rare Earth Functional Materials and Applications
[3] Bohai University,College of New Energy
来源：
Journal of Materials Science: Materials in Electronics | 2019年 / 30卷
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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+. CaHfO3:0.1Ce3+ 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.
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页码：17798 / 17803
页数：5
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