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Advanced Materials

Low-Threshold Electrically Pumped Random Lasers

Authors

  • Hai Zhu,

    1. Key Laboratory of Excited State Processes Changchun Institute of Optics, Fine Mechanics, and Physics Chinese Academy of Sciences Changchun 130033 (P. R. China)
    2. Graduate School of the Chinese Academy of Sciences Beijing 100049 (P. R. China)
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  • Chong-Xin Shan,

    Corresponding author
    1. Key Laboratory of Excited State Processes Changchun Institute of Optics, Fine Mechanics, and Physics Chinese Academy of Sciences Changchun 130033 (P. R. China)
    • Key Laboratory of Excited State Processes Changchun Institute of Optics, Fine Mechanics, and Physics Chinese Academy of Sciences Changchun 130033 (P. R. China).
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  • Ji-Ying Zhang,

    1. Key Laboratory of Excited State Processes Changchun Institute of Optics, Fine Mechanics, and Physics Chinese Academy of Sciences Changchun 130033 (P. R. China)
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  • Zhen-Zhong Zhang,

    1. Key Laboratory of Excited State Processes Changchun Institute of Optics, Fine Mechanics, and Physics Chinese Academy of Sciences Changchun 130033 (P. R. China)
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  • Bing-Hui Li,

    1. Key Laboratory of Excited State Processes Changchun Institute of Optics, Fine Mechanics, and Physics Chinese Academy of Sciences Changchun 130033 (P. R. China)
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  • Dong-Xu Zhao,

    1. Key Laboratory of Excited State Processes Changchun Institute of Optics, Fine Mechanics, and Physics Chinese Academy of Sciences Changchun 130033 (P. R. China)
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  • Bin Yao,

    1. Key Laboratory of Excited State Processes Changchun Institute of Optics, Fine Mechanics, and Physics Chinese Academy of Sciences Changchun 130033 (P. R. China)
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  • De-Zhen Shen,

    1. Key Laboratory of Excited State Processes Changchun Institute of Optics, Fine Mechanics, and Physics Chinese Academy of Sciences Changchun 130033 (P. R. China)
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  • Xi-Wu Fan,

    1. Key Laboratory of Excited State Processes Changchun Institute of Optics, Fine Mechanics, and Physics Chinese Academy of Sciences Changchun 130033 (P. R. China)
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  • Zi-Kang Tang,

    1. Department of Physics Hong Kong University of Science & Technology Clear Water Bay, Kowloon, Hong Kong (P. R. China)
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  • Xianghui Hou,

    1. School of Mechanical, Materials, and Manufacturing Engineering The University of Nottingham University Park, Nottingham, NG7 2RD (UK)
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  • Kwang-Leong Choy

    1. School of Mechanical, Materials, and Manufacturing Engineering The University of Nottingham University Park, Nottingham, NG7 2RD (UK)
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Abstract

Electrically pumped random lasers are realized in ZnO nanocrystallite films in a simple metal–oxide–semiconductor structure. By introducing an i-ZnO layer, a threshold current of 6.5 mA is obtained. The reported results provide a simple route to electrically pumped random lasing (see figure) with relatively low threshold, a significant step towards the future applications of this kind of laser.

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