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Identification of zinc and oxygen vacancy states in nonpolar ZnO single crystal using polarized photoluminescence

机译:利用偏振光致发光鉴定非极性ZnO单晶中的锌和氧空位状态

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摘要

Polarized photoluminescence spectra of the nonpolar ZnO single crystals annealed at different temperatures in air were investigated, for which the whole emission spectra from visible up to ultraviolet range for zinc and oxygen defects states are taken separately via the parallel and the crossed polarization geometries, respectively. It is also deduced from the spectra that the density of oxygen vacancy defects attains minimum for the sample annealed at 400 ℃, and above which both anharmonic effects of ultraviolet emission and enhancement of defect-related deep band emission band due to the increase of oxygen and zinc vacancy defects are observed.
机译:研究了在空气中不同温度退火的非极性ZnO单晶的偏振光致发光光谱,分别通过平行和交叉偏振几何结构分别从可见光到紫外线范围内的锌和氧缺陷状态获取了整个发射光谱。从光谱中还可以推断出,在400℃退火后的样品中,氧空位缺陷的密度达到最小,在此之上,紫外线的非谐效应和由于氧的增加引起的缺陷相关深带发射带的增强。观察到锌空位缺陷。

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  • 来源
    《Applied Physics Letters》 |2010年第23期|p.231907.1-231907.3|共3页
  • 作者单位

    Institute of Laser Engineering, Beijing University of Technology, Beijing 100124, People's Republic of China;

    Institute of Laser Engineering, Beijing University of Technology, Beijing 100124, People's Republic of China;

    Institute of Laser Engineering, Beijing University of Technology, Beijing 100124, People's Republic of China;

    Institute of Physics, Chinese Academy of Sciences, Beijing 100190, People's Republic of China;

    Institute of Physics, Chinese Academy of Sciences, Beijing 100190, People's Republic of China;

    Department of Physics and Materials Science, City University of Hong Kong, Kowloon, Hong Kong;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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  • 正文语种 eng
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