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Chinese Physics, 2007, Vol. 16(9): 2769-2772    DOI: 10.1088/1009-1963/16/9/045
CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES Prev   Next  

Synthesis and photoluminescence study on ZnO nano-particles

Li Xiang(李祥)a)b)†, Zhai Fei-Fei(翟斐斐)a)b), Liu Ying(刘颖)a), Cao Mao-Sheng(曹茂盛)a), Wang Fu-Chi(王富耻)a), and Zhang Xi-Xiang(张西祥)b)
a School of Material Sciences and Engineering, Beijing Institute of Technology, Beijing 100081, China; b Department of Physics, Hong Kong University of Science and Technology, Hong Kong, China
Abstract  A new technique, namely low pressure sputtering, has been developed to fabricate Zn nanoparticles, with a subsequent oxidation to synthesize ZnO nanoparticles in the ambient atmosphere at 500$^{\circ}$C. The synthesized ZnO nanoparticle has a size of 6--8 nm with a preferred orientation of $c$-axis. The produced ZnO nanoparticles have a good UV photoluminescence (PL) emission energy of 3.349 eV with a significant enhancement of donor--acceptor pair emission located at 3.305 eV which implies a number of donor and acceptor bounded excitons existing in the synthesized ZnO nano particles. The near band edge PL emission of the fabricated ZnO is dominated by the bounded excitons at 10 K.
Keywords:  sputtering      ZnO nanoparticle      photoluminescence  
Received:  09 September 2006      Revised:  01 March 2007      Accepted manuscript online: 
PACS:  81.16.Pr (Micro- and nano-oxidation)  
  61.46.Df (Structure of nanocrystals and nanoparticles ("colloidal" quantum dots but not gate-isolated embedded quantum dots))  
  71.35.-y (Excitons and related phenomena)  
  78.55.Et (II-VI semiconductors)  
  78.67.Bf (Nanocrystals, nanoparticles, and nanoclusters)  

Cite this article: 

Li Xiang(李祥), Zhai Fei-Fei(翟斐斐), Liu Ying(刘颖), Cao Mao-Sheng(曹茂盛), Wang Fu-Chi(王富耻), and Zhang Xi-Xiang(张西祥) Synthesis and photoluminescence study on ZnO nano-particles 2007 Chinese Physics 16 2769

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