Photoluminescence and Ce3+→Tb3+→Eu3+ Energy Transfer Processes of the Ce3+/Tb3+/Eu3+-doped β-NaYF4 Phosphors with Broadened Excitation Spectrum

被引：0
作者：
Jianhua Huang
Nan Chen
Xiaojing Wang
Guoping Du
Aisheng Zhang
机构：
[1] Nanchang University,School of Materials Science and Engineering
[2] Hunan Vocational Institute of Technology,Hunan Engineering Laboratory for Control and Optimization of PV Systems
来源：
Journal of Wuhan University of Technology-Mater. Sci. Ed. | 2021年 / 36卷
关键词：
lanthanide doped ; -NaYF; photoluminescence; energy transfer; broad excitation spectrum; solvothermal method;
D O I：
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中图分类号：
学科分类号：
摘要：
Ce3+/Tb3+ co-doped and Ce3+/Tb3+/Eu3+ tri-doped β-NaYF4 photoluminescent microcrystals using oleic acid as surfactant were synthesized using the solvothermal method. Their microstructural characteristics and photoluminescence properties were investigated in detail. They have the shape of hexagonal prism bipyramids with uniform particle size, which decreases with the concentrations of Tb3+ and Eu3+. The energy transfer processes of both the Ce3+→Tb3+ and the Ce3+→Tb3+→Eu3+ were systematically studied. Compared with Eu3+ or Tb3+ single-doped β-NaYF4 microcrystals, the sensitization by Ce3+ for the photoluminescence of Tb3+ and Eu3+ leads to a broad excitation spectral bandwidth in the ultraviolet (UV) range. Meanwhile, the corresponding optical absorption efficiency is greatly enhanced. High energy transfer efficiencies have been observed from Ce3+ to Tb3+ and from Tb3+ to Eu3+.
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页码：33 / 43
页数：10
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