Advanced Materials

Facile Synthesis of Germanium Nanocrystals and Their Application in Organic–Inorganic Hybrid Photodetectors

Authors

  • Ding-Jiang Xue,

    1. Key Laboratory of Molecular Nanostructure and Nanotechnology and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, P. R. China
    2. Graduate School of CAS, Beijing 100064, P. R. China
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  • Jian-Jun Wang,

    1. Key Laboratory of Molecular Nanostructure and Nanotechnology and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, P. R. China
    2. Graduate School of CAS, Beijing 100064, P. R. China
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  • Yong-Qing Wang,

    1. Key Laboratory of Molecular Nanostructure and Nanotechnology and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, P. R. China
    2. Graduate School of CAS, Beijing 100064, P. R. China
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  • Sen Xin,

    1. Key Laboratory of Molecular Nanostructure and Nanotechnology and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, P. R. China
    2. Graduate School of CAS, Beijing 100064, P. R. China
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  • Yu-Guo Guo,

    Corresponding author
    1. Key Laboratory of Molecular Nanostructure and Nanotechnology and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, P. R. China
    • Key Laboratory of Molecular Nanostructure and Nanotechnology and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, P. R. China.
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  • Li-Jun Wan

    Corresponding author
    1. Key Laboratory of Molecular Nanostructure and Nanotechnology and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, P. R. China
    • Key Laboratory of Molecular Nanostructure and Nanotechnology and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, P. R. China.
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Abstract

A solution-based method is developed for the synthesis of colloidal Ge nanocrystals (NCs), which directly grow from germanium(II) bromide in an oleylamine solution with no extra reducing agents. Hybrid photodetectors based on the NCs and poly(3-hexylthiophene) (P3HT) show promise for large-area applications, as revealed by their high photoresponse ratio, high sensitivity, and high stability.

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