中国物理B ›› 2014, Vol. 23 ›› Issue (8): 87701-087701.doi: 10.1088/1674-1056/23/8/087701

• SPECIAL TOPI—International Conference on Nanoscience & Technology, China 2013 • 上一篇    下一篇

Rational doping for zinc oxide and its influences on morphology and optical properties

夏玉静a b, 管自生b, 贺涛a   

  1. a National Center for Nanoscience and Technology, Beijing 100190, China;
    b College of Materials Science and Technology, Nanjing University of Technology, Nanjing 210009, China
  • 收稿日期:2013-09-04 修回日期:2014-03-14 出版日期:2014-08-15 发布日期:2014-08-15

Rational doping for zinc oxide and its influences on morphology and optical properties

Xia Yu-Jing (夏玉静)a b, Guan Zi-Sheng (管自生)b, He Tao (贺涛)a   

  1. a National Center for Nanoscience and Technology, Beijing 100190, China;
    b College of Materials Science and Technology, Nanjing University of Technology, Nanjing 210009, China
  • Received:2013-09-04 Revised:2014-03-14 Online:2014-08-15 Published:2014-08-15
  • Contact: Guan Zi-Sheng, He Tao E-mail:zishengguan@163.com;het@nanoctr.cn

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摘要： Zinc oxide (ZnO) nanopowders doped with different metal ions (Me, Me = Sn4+, In3+, Mn2+, and Co2+) are prepared by a simple sol-gel method. Influences of the ion doping on morphology and optical properties of the resulting ZnxMeyO are investigated by scanning electron microscopy, X-ray diffraction, UV-vis absorption spectrum, and photoluminescence. The morphology of ZnO can be tailored by ion doping, which is closely related not only to the ionic radii and electronegativities of the doped ions, but also to their oxidation states and electron configurations. The optical band gap and photoluminescence of ZnO can also be modulated by ion doping, which results from a combination of different effects, Burstein-Moss, band tail, charge compensation, sp-d exchange, non-radiative recombination, and blocking barrier. This may offer us a viable approach to tuning the (optical) properties of ZnO-based materials via rational ion doping.

关键词: zinc oxide, sol-gel chemistry, optical properties, luminescence

Abstract: Zinc oxide (ZnO) nanopowders doped with different metal ions (Me, Me = Sn4+, In3+, Mn2+, and Co2+) are prepared by a simple sol-gel method. Influences of the ion doping on morphology and optical properties of the resulting ZnxMeyO are investigated by scanning electron microscopy, X-ray diffraction, UV-vis absorption spectrum, and photoluminescence. The morphology of ZnO can be tailored by ion doping, which is closely related not only to the ionic radii and electronegativities of the doped ions, but also to their oxidation states and electron configurations. The optical band gap and photoluminescence of ZnO can also be modulated by ion doping, which results from a combination of different effects, Burstein-Moss, band tail, charge compensation, sp-d exchange, non-radiative recombination, and blocking barrier. This may offer us a viable approach to tuning the (optical) properties of ZnO-based materials via rational ion doping.

Key words: zinc oxide, sol-gel chemistry, optical properties, luminescence

中图分类号:  (ZnO)

  • 77.55.hf
78.67.Bf (Nanocrystals, nanoparticles, and nanoclusters) 78.60.Lc (Optically stimulated luminescence) 81.20.Fw (Sol-gel processing, precipitation)