Ultrahigh-Performance Solar-Blind Photodetectors Based on Individual Single-crystalline In2Ge2O7 Nanobelts

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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  • Pooi See Lee,

    1. School of Materials Science and Engineering, Nanyang Technological University (NTU) (Singapore)
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  • Chaoyi Yan,

    1. School of Materials Science and Engineering, Nanyang Technological University (NTU) (Singapore)
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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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  • 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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  • Meiyong Liao,

    Corresponding author
    1. Sensor Materials Center, NIMS, Namiki 1–1, Tsukuba, Ibaraki, 305–0044 (Japan)
    • 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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  • 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

original image

Solar-blind photodetectors are designed from individual In2Ge2O7 nanobelts using a standard photolithography technique. The detectors demonstrated high sensitivity and selectivity towards the solar-blind spectrum, fast response and decay times ∼ 3 ms, high responsivity ∼ 3.9 × 105 A W−1, and high quantum efficiency ∼2.0 × 108%.

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