发光学报2011，Vol.32Issue(1)：21-26,6.DOI:10.3788/fgxb20113201.0021
超声喷雾共沉淀法制备Eu3+掺杂纳米ZnO粉体
Preparation of Eu3+-doped Nano-ZnO by Ultrasonic Atomization and Co-precipitation Method
摘要
Abstract
In this paper, nano-ZnO and Eu3 + doped nano-ZnO powders were prepared by ultrasonic atomization and co-precipitation method with Zn( NO3 )2 and (NH4 )2C03 as reactants. The effects of the ultrasonic spraying condition, the reaction time and chemical composition on the morphology and size of ZnO nanopowder were carefully investigated. And the chemical processing condition of the zinc hydroxide dehydrated to ZnO nano-powder was analyzed. XRD, SEM and fluorescence spectrophotometer were employed to characterize the phase composition, particle size and luminescence property of the nano-powder. XRD results of the powder show a typical wurtzite hexagonal crystal structure. The photoluminescence spectra indicate that Eu3+ ions are successfully doped into the crystal lattice of ZnO matrix. The emission of the 5 D0→7F2 comes from an allowed electric-dipole transition is the strongest. The SEM results show that the prepared spherical nanosized zinc oxide have narrow size distributions at 35 ～45 nm. The effect of ZnO content on the emission intensity was also investigated. The concentration quenching for the emission intensity did not occur when the doping concentration of Eu3+ up to 10％.关键词
纳米粉体ZnO/超声喷雾共沉淀法/发光性能Key words
nano-ZnO powder/ ultrasonic atomization and co-precipitation method/ luminescence property分类
数理科学引用本文复制引用
和宁宁,邱杨,夏海平,王冬杰..超声喷雾共沉淀法制备Eu3+掺杂纳米ZnO粉体[J].发光学报,2011,32(1):21-26,6.基金项目
国家自然科学基金(50972061) （50972061）
浙江省杰出青年自然科学基金(R4100364) （R4100364）
宁波市科技局(2009A610007,2010A610185)资助项目 （2009A610007,2010A610185）
