中国物理B ›› 2014, Vol. 23 ›› Issue (5): 58104-058104.doi: 10.1088/1674-1056/23/5/058104

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇    下一篇

Structural and photoluminescence properties of terbium-doped zinc oxide nanoparticles

Ningthoujam Surajkumar Singha b, Shougaijam Dorendrajit Singha, Sanoujam Dhiren Meeteia   

  1. a Department of Physics, Manipur University, Canchipur, Imphal 795003, Manipur, India;
    b Department of Physics, Pachhunga University College, College Veng, Aizawl 796001, Mizoram, India
  • 收稿日期:2013-10-02 修回日期:2013-10-28 出版日期:2014-05-15 发布日期:2014-05-15

Structural and photoluminescence properties of terbium-doped zinc oxide nanoparticles

Ningthoujam Surajkumar Singha b, Shougaijam Dorendrajit Singha, Sanoujam Dhiren Meeteia   

  1. a Department of Physics, Manipur University, Canchipur, Imphal 795003, Manipur, India;
    b Department of Physics, Pachhunga University College, College Veng, Aizawl 796001, Mizoram, India
  • Received:2013-10-02 Revised:2013-10-28 Online:2014-05-15 Published:2014-05-15
  • Contact: Shougaijam Dorendrajit Singh E-mail:dorendrajit@yahoo.co.in
  • About author:81.07.Bc; 78.55.Et

摘要: We present in this paper a study of the structural and photoluminescence (PL) properties of terbium (Tb) doped zinc oxide (ZnO) nanoparticles synthesized by a simple low temperature chemical precipitation method, using zinc acetate and terbium nitrate in an isopropanol medium with diethanolamine (DEA) as the capping agent at 60 ℃. The as-prepared samples were heat treated and the PL of the annealed samples were studied. The prepared nanoparticles were characterized with X-ray diffraction (XRD). The XRD patterns show the pattern of typical ZnO nanoparticles and correspond with the standard XRD pattern given by JCPDS card No. 36-1451, showing the hexagonal phase structure. The PL intensity was enhanced due to Tb3+ doping, and it decreased at higher concentrations of Tb3+ doping after reaching a certain optimum concentration. The PL spectra of Tb3+ doped samples exhibited blue, bluish green, and green emissions at 460 nm (5D3 - 7F3), 484 nm (5D4 - 7F6), and 530 nm (5D4 - 7F5), respectively, which were more intense than the emissions for the undoped ZnO sample. Based on the results, an energy level schematic diagram was proposed to explain the possible electron transition processes.

关键词: zinc oxide, nanoparticles, photoluminescence, chemical precipitation

Abstract: We present in this paper a study of the structural and photoluminescence (PL) properties of terbium (Tb) doped zinc oxide (ZnO) nanoparticles synthesized by a simple low temperature chemical precipitation method, using zinc acetate and terbium nitrate in an isopropanol medium with diethanolamine (DEA) as the capping agent at 60 ℃. The as-prepared samples were heat treated and the PL of the annealed samples were studied. The prepared nanoparticles were characterized with X-ray diffraction (XRD). The XRD patterns show the pattern of typical ZnO nanoparticles and correspond with the standard XRD pattern given by JCPDS card No. 36-1451, showing the hexagonal phase structure. The PL intensity was enhanced due to Tb3+ doping, and it decreased at higher concentrations of Tb3+ doping after reaching a certain optimum concentration. The PL spectra of Tb3+ doped samples exhibited blue, bluish green, and green emissions at 460 nm (5D3 - 7F3), 484 nm (5D4 - 7F6), and 530 nm (5D4 - 7F5), respectively, which were more intense than the emissions for the undoped ZnO sample. Based on the results, an energy level schematic diagram was proposed to explain the possible electron transition processes.

Key words: zinc oxide, nanoparticles, photoluminescence, chemical precipitation

中图分类号:  (Nanocrystalline materials)

  • 81.07.Bc
78.55.Et (II-VI semiconductors)