Chem. J. Chinese Universities ›› 2010, Vol. 31 ›› Issue (2): 243.

• Articles • Previous Articles     Next Articles

Influence of Excitation Intensities on Photoluminescence of ZnO(Wurtzite) Whiskers at Room Temperature

GUO Xing-Yuan1*, DING Zhan-Hui1,2*, ZHAO Xu-Dong2, QIU Li-Xia1, XUE Yan-Feng1, XU Da-Peng1   

  1. 1. College of Physics, Jilin University, Changchun 130021, China;
    2. State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University, Changchun 130012, China
  • Received:2009-03-23 Online:2010-02-10 Published:2010-02-10
  • Contact: GUO Xing-Yuan. E-mail: guoxy@jlu.edu.cn; DING Zhan-Hui. E-mail: dingzh@jlu.edu.cn
  • Supported by:

    中央高校基本科研业务费专项资金(批准号: 20871052)资助.

Abstract:

ZnO(wurtzite) whiskers were grown with a floating zone method using ZnO powder as starting materials under 0.3 MPa oxygen pressures. The as-grown samples were characterized by X-ray diffraction and Raman scattering, and their characteristic peaks verify that the as-grown ZnO whiskers have excellent hexagonal wurtzite phase and (100) orientation. The photoluminescence properties of the as-grown ZnO whiskers were measured under 266 nm-light excitation from a Nd∶YAG laser, and the influence of various laser intensity on the photoluminescence of the ZnO whiskers was investigated. It was found that the threshold of UV was higher than 1 kW/cm2.

Key words: ZnO; Whisker; X-ray diffraction; Raman spectrum; Photoluminescence

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