荧光粉
纳米晶材料
发光
化学
兴奋剂
离子
激发态
分析化学(期刊)
能量转移
结晶学
光电子学
材料科学
原子物理学
物理
有机化学
色谱法
分子物理学
作者
Xiaoming Liu,Xueya Chen,Yu Yang,Wei Xie,Yi-Dan Zhao,Shenglian Luo,Minyi Guo,Jun Lin
出处
期刊:Inorganic Chemistry
[American Chemical Society]
日期:2020-08-14
卷期号:59 (17): 12348-12361
被引量:14
标识
DOI:10.1021/acs.inorgchem.0c01440
摘要
Here, we demonstrate a novel donor-intermediate-receptor energy transfer model through a Ce3+ → Tb3+ → Eu3+ scheme in a CaTbAl3O7:Ce3+,Eu3+ nanocrystalline phosphor. A new type of CaTbAl3O7 and CaTbAl3O7:RE3+ (RE3+ = Ce3+ and/or Eu3+) nanocrystalline phosphors were prepared by a simple sol-gel method. There exist efficient energy transfers of Ce3+ → Tb3+, Tb3+ → Eu3+, and Ce3+ → Tb3+ → Eu3+ in CaTbAl3O7:RE 3+ (RE 3+ = Ce3+ and/or Eu3+) nanocrystalline phosphors. With near-UV or UV light excitation, the as-prepared CaTbAl3O7:RE 3+ (RE 3+ = Ce3+ and/or Eu3+) nanocrystalline phosphors' luminous color can be regulated from green to green-yellow, yellow, orange, and orange-red by adjusting the doping concentration, categories, and different proportions of codoping Ce3+ to Eu3+ ions in the CaTbAl3O7 matrix. The luminescence mechanism with respect to the CaTbAl3O7:RE3+ (RE3+ = Ce3+ and/or Eu3+) nanocrystalline phosphors has been tentatively proposed. Due to their excellent luminescence properties, the as-prepared CaTbAl3O7, CaTbAl3O7:Ce3+, CaTbAl3O7:Eu3+, and CaTbAl3O7:Ce3+,Eu3+ nanocrystalline phosphors exhibit bright prospects in NUV-LEDs and other photoelectric field.
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