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    Simple Unbiased Hot-electron Polarization-sensitive Near-Infrared Photo-detector

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    manuscript accepted by the journal (751.6Kb)
    Date
    2018-03-06
    Author
    Mirzaee, Somayeh
    Lebel, Olivier
    Nunzi, JM
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    Abstract
    Plasmonic nanostructures can generate energetic “hot” electrons from light in a broad band fashion depending on their shape, size, and arrangement. Such structures have a promising use in photodetectors, allowing high speed, broad band, and multicolor photodetection. Because they function without a band gap absorption, photon detection at any energy would be possible through engineering of the plasmonic nanostructure. Herein, a compact hot electron- based photodetector that combines polarization sensitivity and circularly polarized light detection in the near infrared region was fabricated using an indium tin oxide (ITO)−Au hybrid layer. Furthermore, the sensitivity of the device was significantly increased by adding a poled Azo molecular glass film in a capacitor configuration. The resulting device is capable of detecting light below the ITO band gap at ambient temperature without any bias voltage. This photodetector, which is amenable to large-area fabrication, can be integrated with other nanophotonic and nanoplasmonic structures for operation at telecom wavelengths.
    URI for this record
    http://hdl.handle.net/1974/27428
    External DOI
    https://doi.org/10.1021/acsami.7b17836
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    • Department of Physics, Engineering Physics and Astronomy Faculty Publications
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