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Advanced Materials

Single-Crystalline CdS Nanobelts for Excellent Field-Emitters and Ultrahigh Quantum-Efficiency Photodetectors

Authors

  • Liang Li,

    Corresponding author
    1. International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, (Japan)
    • International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, (Japan)
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  • Peicai Wu,

    1. State Key Laboratory for Mesoscopic Physics and School of Physics, Peking University, Beijing 100871, (P. R. China)
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  • Xiaosheng Fang,

    Corresponding author
    1. International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, (Japan)
    • International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, (Japan)
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  • Tianyou Zhai,

    Corresponding author
    1. International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, (Japan)
    • International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, (Japan)
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  • Lun Dai,

    Corresponding author
    1. State Key Laboratory for Mesoscopic Physics and School of Physics, Peking University, Beijing 100871, (P. R. China)
    • State Key Laboratory for Mesoscopic Physics and School of Physics, Peking University, Beijing 100871, (P. R. China).
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  • Meiyong Liao,

    1. Sensor Materials Center, NIMS, Namiki 1-1, Tsukuba, Ibaraki 305-0044, (Japan)
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  • Yasuo Koide,

    1. Sensor Materials Center, NIMS, Namiki 1-1, Tsukuba, Ibaraki 305-0044, (Japan)
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  • Hongqiang Wang,

    1. Nanotechnology Research Institute (NRI), National Institute of Advanced Industrial Science and Technology (AIST), Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, (Japan)
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  • Yoshio Bando,

    1. International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, (Japan)
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  • Dmitri Golberg

    1. International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, (Japan)
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Abstract

Single-crystallineCdS nanobelts demonstrate excellent field-emission properties for the first time. Individual CdS nanobelts are assembled for high-performance visible-light photodetectors with an ultrafast response time of ∼20 μs and ultrahigh quantum efficiency of 1.9 × 107%. The results suggest a high potential of utilizing these CdS nanobelts as optoelectronic nanodevices.

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