Synthesis of complex rare earth fluoride nanocrystal phosphors.
Complex rare earth fluoride (NaRF(4), R = Ce,Y,Gd) nanocrystals of 30-50 nm were synthesized by hydrothermal and solvothermal techniques. The size, morphology and phase transition of the complex rare earth fluorides are discussed as the effects of different solvents, reaction time and temperature. Hexagonal phase NaRF(4) nanocrystals with good dispersibility can be prepared in the presence of EDTA using ethanol as the solvent. After doping with Yb(3+), Er(3+); Yb(3+), Tm(3+), and Eu(3+), some typical up-conversion and down-conversion photoluminescence was characterized and discussed.
Zeng
Jing Hui
JH
Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic of China.
Li
Zhi Hua
ZH
Su
Ji
J
Wang
Leyu
L
Yan
Ruoxue
R
Li
Yadong
Y