高等学校化学学报 ›› 2010, Vol. 31 ›› Issue (2): 243.

• 研究论文 • 上一篇    下一篇

室温下激发强度对ZnO晶须发光的影响

郭星原1, 丁战辉1,2, 赵旭东2, 邱利霞1, 薛燕峰1, 许大鹏1   

  1. 1. 吉林大学物理学院, 长春 130021;
    2. 吉林大学无机合成与制备化学国家重点实验室, 长春 130012
  • 收稿日期:2009-03-23 出版日期:2010-02-10 发布日期:2010-02-10
  • 通讯作者: 郭星原, 男, 博士, 讲师, 主要从事发光与稀释磁性半导体材料研究. E-mail: guoxy@jlu.edu.cn; 丁战辉, 男, 博士, 讲师, 主要从事高压纳米复合材料及性能研究. E-mail: dingzh@jlu.edu.cn
  • 基金资助:

    中央高校基本科研业务费专项资金(批准号: 20871052)资助.

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.

摘要:

采用浮区法(FZ)在高氧压条件下生长出大尺寸的ZnO单晶晶须. X射线衍射(XRD)和拉曼光谱(Raman)分析结果表明, 生长的ZnO单晶晶须为六方结构晶体, 沿(100)晶面方向有明显的择优生长取向. 研究了0.3 MPa氧压下生长的ZnO晶须的变功率光致发光光谱, 结果表明, 晶须在室温下有比较高的紫外光致发光效率和较低的缺陷, 其紫外发光激发强度的阈值>1 kW/cm2.

关键词: 氧化锌; 晶须; X射线衍射; 拉曼光谱; 光致发光

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

TrendMD: