中国物理B ›› 2007, Vol. 16 ›› Issue (9): 2769-2772.doi: 10.1088/1009-1963/16/9/045

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Synthesis and photoluminescence study on ZnO nano-particles

张西祥1, 刘颖2, 曹茂盛2, 王富耻2, 李祥3, 翟斐斐4   

  1. (1)Department of Physics, Hong Kong University of Science and Technology, Hong Kong, China; (2)School of Material Sciences and Engineering, Beijing Institute of Technology, Beijing 100081, China; (3)School of Material Sciences and Engineering, Beijing Institute of Technology, Beijing 100081, China \\sjb)Department of Physics, Hong Kong University of Science and Technology, Hong Kong, China; (4)School of Material Sciences and Engineering, Beijing Institute of Technology, Beijing 100081, Chin
  • 收稿日期:2006-09-09 修回日期:2007-03-01 出版日期:2007-09-20 发布日期:2007-09-20

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)   

  1. 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
  • Received:2006-09-09 Revised:2007-03-01 Online:2007-09-20 Published:2007-09-20

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摘要： 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.

关键词: sputtering, ZnO nanoparticle, photoluminescence

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.

Key words: sputtering, ZnO nanoparticle, photoluminescence

中图分类号:  (Micro- and nano-oxidation)

  • 81.16.Pr
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)