Enhancement of Photocurrent Gain Based on Type-Ⅱ Band Alignment from a Single SnO₂ Nanowire Decorated with TiO₂ Nanoparticles Enhancement of Photocurrent Gain Based on Type-II Band Alignment from a Single SnO2 Nanowire Decorated with TiO2 Nanoparticles

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The high sensitivity of a photodetector in the UV range based on composites consisting of a single SnO2 nanowire (NW) and TiO2 nanoparticles (NPs) has been demonstrated. The underlying mechanism is attributed to the spatial separation of photogenerated electrons and holes due to the charge transfer arising from type-II band alignment between TiO2 NPs and SnO2 NW. The enhanced spatial separation effect prolongs the lifetime of photoinduced electrons and consequently increases the photoresponse gain. Our results should be very useful for creating high-efficiency photodetectors with a broad band photoresponse spectrum.

収録刊行物

  • Applied physics express

    Applied physics express 5(6), 062201-062201-3, 2012-06-25

    The Japan Society of Applied Physics

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各種コード

  • NII論文ID(NAID)
    10030769742
  • NII書誌ID(NCID)
    AA12295133
  • 本文言語コード
    EN
  • 資料種別
    SHO
  • ISSN
    18820778
  • NDL 記事登録ID
    023762856
  • NDL 請求記号
    Z78-A526
  • データ提供元
    CJP書誌  NDL  JSAP 
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