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Self-powered room temperature broadband infrared photodetector based on MoSe_2/germanium heterojunction with 35 A/W responsivity at 1550 nm

机译:基于MoSe_2 / Ge异质结的自供电室温宽带红外光电探测器,在1550 nm处具有35 A / W的响应度

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摘要

A highly efficient room temperature photodetector with broadband (400 nm-1800 nm) photoresponse based on the MoSe2/Ge heterojunction has been reported here. The fabricated MoSe2/Ge heterojunction exhibits high responsivity up to 24 A/W in the near-infrared wavelength range (750 nm) and 35 A/W in the short wavelength infrared range (1550 nm). The interfacial charge transfer at the Ge-MoSe2 heterojunction enables self-powered photo-detection in fabricated devices with zero bias responsivity values of 250 mA/W (750 nm) and 400 mA/W (1550 nm). Transient photoresponse measurements of the MoSe2/Ge heterojunction under the modulated light reveal that the devices are capable of working up to 20 kHz with a fast rise/fall time of 13.5/1.2 mu sec. These results demonstrate the feasibility of achieving a high-performance photodetector derived from the MoSe2/Ge heterojunction for broadband infrared detection. Published under license by AIP Publishing.u
机译:据报道,基于MoSe2 / Ge异质结的具有宽带(400 nm-1800 nm)光响应的高效室温光电探测器。制成的MoSe2 / Ge异质结在近红外波长范围(750 nm)中显示高达24 A / W的响应度,而在短波长红外范围(1550 nm)中显示为35 A / W的响应度。 Ge-MoSe2异质结处的界面电荷转移可在零偏压响应度值分别为250 mA / W(750 nm)和400 mA / W(1550 nm)的制造设备中实现自供电光检测。 MoSe2 / Ge异质结在调制光下的瞬态光响应测量表明,这些器件能够以高达13.5 / 1.2毫秒的快速上升/下降时间工作高达20 kHz。这些结果证明了实现从MoSe2 / Ge异质结衍生出的高性能光电探测器用于宽带红外探测的可行性。由AIP Publishing.u许可发布

著录项

  • 来源
    《Applied Physics Letters》 |2019年第12期|121101.1-121101.5|共5页
  • 作者单位

    Indian Inst Technol Delhi, Ctr Appl Res Elect, New Delhi 110016, India;

    Indian Inst Technol Delhi, Ctr Appl Res Elect, New Delhi 110016, India;

    Indian Inst Technol Delhi, Ctr Appl Res Elect, New Delhi 110016, India;

    Indian Inst Technol Delhi, Dept Phys, New Delhi 110016, India;

    Indian Inst Technol Delhi, Ctr Appl Res Elect, New Delhi 110016, India;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
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