Upconversion luminescence properties of the novel garnet structure Ca2LaZr2Ga3O12:Yb3+,Er3+/Tm3+ phosphors

被引：0
|
作者：
Yurong Shi
Lixia Yang
Haoming Song
Yumei Bai
Chunyang Li
Zhenling Wang
机构：
[1] Zhoukou Normal University,The Key Laboratory of Rare Earth Functional Materials and Applications
[2] Zhoukou Normal University,College of Chemistry and Chemical Engineering
来源：
Journal of Materials Science: Materials in Electronics | 2017年 / 28卷
关键词：
Ga2O3; Energy Transfer Process; NaYF4; Garnet Structure; Multiphonon Relaxation;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Yb3+–Er3+ and Yb3+–Tm3+ activated novel garnet structure Ca2LaZr2Ga3O12 phosphors were synthesized by solid state reaction and its upconversion luminescence properties were investigated. X-ray diffraction patterns confirmed the synthesized samples were indexed to the garnet structure. The upconversion emission spectra revealed that under 980 nm laser excitation, bright green and blue light had been achieved in Ca2LaZr2Ga3O12:Yb3+,Er3+ and Ca2LaZr2Ga3O12:Yb3+,Tm3+ phosphors, respectively. Yb3+ acted as sensitizers in the upconversion process and did not show its characteristic emission peak. Strong Er3+ and Tm3+ emission peaks were obtained via energy transfer from Yb3+. The possible energy transfer processes of Yb3+ to Er3+ and Tm3+ were discussed. The results indicated that Yb3+–Er3+ and Yb3+–Tm3+ activated Ca2LaZr2Ga3O12 phosphors exhibited excellent upconversion luminescence properties.
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页码：4192 / 4196
页数：4
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