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

被引：4
|
作者：
Huang, Jianhua [1 ,2 ]
Chen, Nan [1 ]
Wang, Xiaojing [1 ]
Du, Guoping [1 ]
Zhang, Aisheng [1 ]
机构：
[1] Nanchang Univ, Sch Mat Sci & Engn, Nanchang 330031, Jiangxi, Peoples R China
[2] Hunan Vocat Inst Technol, Hunan Engn Lab Control & Optimizat PV Syst, Xiangtan 411104, Peoples R China
来源：
JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION | 2021年 / 36卷 / 01期
基金：
中国国家自然科学基金;
关键词：
lanthanide doped beta-NaYF4; photoluminescence; energy transfer; broad excitation spectrum; solvothermal method; ORGANIC HYBRID NANOSTRUCTURES; EARTH FLUORIDE NANOCRYSTALS; LUMINESCENCE; NANOPARTICLES; PHASE; CE3+; EMISSION; BEHAVIOR; YVO4-EU; TB3+;
D O I：
10.1007/s11595-021-2375-0
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Ce3+/Tb3+ co-doped and Ce3+/Tb3+/Eu3+ tri-doped beta-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 beta-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+.
引用
收藏
页码：33 / 43
页数：11
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