Influence of Pr^(3+) Doping on the Microstructure of ZnO Quantum Dots  

作　　者：李宏 XIA Mengling LUO Kaifei WANG Paul W 

机构地区：[1]State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology [2]Department of Physics, Bradley University

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2015年第1期16-21,共6页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the Science and Technology Planning Project of Wuhan City(No.2013010501010135);the Science and Technology Planning Project of Hubei Province(Nos.2013BAA095,2014BAA136);National Natural Science Foundation of China(No.51372179)

摘　　要：Pr3＋ doped ZnO quantum dots （QDs） were successfully synthesized by sol-gel process. X-ray diffraction （XRD） and X-ray Phtoelectron spectroscopy （XPS） were used to analyze the microstructure variation of ZnO QDs and the chemical environment of Pr3＋ with increasing Pr3＋ doping concentrations. Most of Pr3＋ ions distribute on the surface ofZnO QDs while a few of them penetrate into the ZnO lattice to substitute Zn2＋ which causes the lattice distortion and the change of the crystal size. With increasing concentration of Pr3＋ ions, the crystal size of ZnO QDs firstly increases and then decreases meanwhile the amorphization gradually increases. New Pr-O-Zn bonds formed after Pr3＋ doping and Pr3＋ ions have at least two chemical bonding environments： one is Pr-O-Zn bond and the other is Pr-O bond surrounded by oxygen vacancies.Pr3＋ doped ZnO quantum dots （QDs） were successfully synthesized by sol-gel process. X-ray diffraction （XRD） and X-ray Phtoelectron spectroscopy （XPS） were used to analyze the microstructure variation of ZnO QDs and the chemical environment of Pr3＋ with increasing Pr3＋ doping concentrations. Most of Pr3＋ ions distribute on the surface ofZnO QDs while a few of them penetrate into the ZnO lattice to substitute Zn2＋ which causes the lattice distortion and the change of the crystal size. With increasing concentration of Pr3＋ ions, the crystal size of ZnO QDs firstly increases and then decreases meanwhile the amorphization gradually increases. New Pr-O-Zn bonds formed after Pr3＋ doping and Pr3＋ ions have at least two chemical bonding environments： one is Pr-O-Zn bond and the other is Pr-O bond surrounded by oxygen vacancies.

关 键 词：Pr3＋ doping ZnO QDs sol-gel process MICROSTRUCTURE 

分 类 号：O614.241[理学—无机化学]