%0 Journal Article
%T Synthesis and photoluminescence of ZnO and Zn/ZnOnanoparticles prepared by liquid-phase pulsed laser ablation<br>液相激光烧蚀合成ZnO及Zn/ZnO纳米颗粒及其光致发光性能
%A Fang He
%A Wang Shun-Li
%A Li Li-Qun
%A Li Pei-Gang
%A Liu Ai-Ping
%A Tang Wei-Hua
%A <br>方合
%A 王顺利
%A 李立群
%A 李培刚
%A 刘爱萍
%A 唐为华
%J 物理学报
%D 2011
%I 
%X ZnO nanoparticles and Zn/ZnO core/shell structured nanoparticles are synthesized by ablating zinc target in deionized water and sodium dodecyl sulfate (SDS) solutions, respectively, using pulsed laser ablation with 532 nm pulsed infrared laser. The microstructures and photoluminescence properties of the products are characterized by X-ray diffraction, transmission electron microscopy, ultraviolet-visible and PL spectrophotometer. The formation mechanism of ZnO and Zn/ZnO nanoparticles is discussed. The results show that the mean diameters of ZnO nanoparticles are 43 nm and 19 nm, respectively, after ablating the zinc target for 2 and 4 hours in deionized water. The longer-time ablation may lead to the interaction of the ablating laser beam with the ZnO nanoparticles, resulting in the decrease of the mean diameter of ZnO. Zn/ZnO core/shell structured nanoparticles can be obtained in 0.005 mol/L SDS solution due to the enwrapping of SDS to the Zn nanoparticles. A blue photoluminescence at about 450 nm (2.76 eV) and a green one at about 558 nm (2.22 eV) are observed for the colloidal solutions of ZnO and Zn/ZnO nanoparticles.
%K pulsed laser ablation
%K ZnO nanoparticles
%K core/shell structure
%K photoluminescence<br>脉冲激光烧蚀
%K ZnO纳米粒子
%K 核壳结构
%K 光致发光
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=F437B1BF01E7F486BA73B0C021BCBAED&yid=9377ED8094509821&vid=BFE7933E5EEA150D&iid=9CF7A0430CBB2DFD&sid=C93AD376D3B9F126&eid=560EBCE92D18C1C8&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=35