中国物理B ›› 2012, Vol. 21 ›› Issue (11): 116801-116801.doi: 10.1088/1674-1056/21/11/116801

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇    下一篇

Ag-doped ZnO nanorods synthesized by two-step method

陈先梅, 冀勇, 郜小勇, 赵显伟   

  1. Key Laboratory of Material Physics of Ministry of Education, School of Physics and Engineering, Zhengzhou University, Zhengzhou 450052, China
  • 收稿日期:2012-03-22 修回日期:2012-04-26 出版日期:2012-10-01 发布日期:2012-10-01
  • 基金资助:
    Projected supported by the National Natural Science Foundation of China (Grant No. 60807001), the Foundation of Henan Educational Committee, China (Grant No. 2010A140017), the Henan Provincial College Young Teachers Program, China, and the Graduate Innovation of Zhengzhou University, China (Grant No. 11L10102).

Ag-doped ZnO nanorods synthesized by two-step method

Chen Xian-Mei (陈先梅), Ji Yong (冀勇), Gao Xiao-Yong (郜小勇), Zhao Xian-Wei (赵显伟 )   

  1. Key Laboratory of Material Physics of Ministry of Education, School of Physics and Engineering, Zhengzhou University, Zhengzhou 450052, China
  • Received:2012-03-22 Revised:2012-04-26 Online:2012-10-01 Published:2012-10-01
  • Contact: Gao Xiao-Yong E-mail:xygao@zzu.edu.cn
  • Supported by:
    Projected supported by the National Natural Science Foundation of China (Grant No. 60807001), the Foundation of Henan Educational Committee, China (Grant No. 2010A140017), the Henan Provincial College Young Teachers Program, China, and the Graduate Innovation of Zhengzhou University, China (Grant No. 11L10102).

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摘要： Two-step method is adopted to synthesize Ag-doped ZnO nanorods. A ZnO seed layer is first prepared on a glass substrate by thermal decomposition of zinc acetate. Ag-doped ZnO nanorods are then assembled on the ZnO seed layer using the hydrothermal method. The influences of the molar percentage of Ag ions to Zn ions (RAg/Zn) on the structural and optical properties of the ZnO nanorods obtained are carefully studied using X-ray diffractometry, scanning electron microscopy and spectrophotometry. Results indicate that Ag ions enter into the crystal lattice through the substitution of Zn ions. The <002> c-axis-preferred orientation of the ZnO nanorods decreases as RAg/Zn increases. At RAg/Zn > 1.0%, ZnO nanorods lose their c-axis-preferred orientation and generate Ag precipitates from the ZnO crystal lattice. The average transmissivity in the visible region first increases and then decreases as RAg/Zn increases. The absorption edge is first blue shifted and then red shifted. The influence of Ag doping on the average head face, and axial dimensions of the ZnO nanorods may be optimized to improve the average transmissivity at RAg/Zn < 1.0%.

关键词: ZnO nanorods, Ag doping, thermal decomposition of zinc acetate, hydrothermal method

Abstract: Two-step method is adopted to synthesize Ag-doped ZnO nanorods. A ZnO seed layer is first prepared on a glass substrate by thermal decomposition of zinc acetate. Ag-doped ZnO nanorods are then assembled on the ZnO seed layer using the hydrothermal method. The influences of the molar percentage of Ag ions to Zn ions (RAg/Zn) on the structural and optical properties of the ZnO nanorods obtained are carefully studied using X-ray diffractometry, scanning electron microscopy and spectrophotometry. Results indicate that Ag ions enter into the crystal lattice through the substitution of Zn ions. The <002> c-axis-preferred orientation of the ZnO nanorods decreases as RAg/Zn increases. At RAg/Zn > 1.0%, ZnO nanorods lose their c-axis-preferred orientation and generate Ag precipitates from the ZnO crystal lattice. The average transmissivity in the visible region first increases and then decreases as RAg/Zn increases. The absorption edge is first blue shifted and then red shifted. The influence of Ag doping on the average head face, and axial dimensions of the ZnO nanorods may be optimized to improve the average transmissivity at RAg/Zn < 1.0%.

Key words: ZnO nanorods, Ag doping, thermal decomposition of zinc acetate, hydrothermal method

中图分类号:  (Amorphous semiconductors, glasses)

  • 68.35.bj
81.10.-h (Methods of crystal growth; physics and chemistry of crystal growth, crystal morphology, and orientation) 91.60.Ed (Crystal structure and defects, microstructure) 91.60.Mk (Optical properties)