Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.11851/3869
Title: Optically-Thin Broadband Graphene-Membrane Photodetector
Authors: Moein, Tania
Gailevicius, Darius
Katkus, Tomas
Ng, Soon Hock
Lundgaard, Stefan
Moss, David J.
Kurt, Hamza
Mizeikis, Vygantas
Staliunas, Kestutis
Malinauskas, Mangirdas
Juodkazis, Saulius
Keywords: Optically thin photodetector
graphene
Si3N4 membrane
thermopower
Issue Date: Feb-2020
Publisher: MDPI AG
Source: Moein, T., Gailevi?ius, D., Katkus, T., Ng, S. H., Lundgaard, S., Moss, D. J., ... and Juodkazis, S. (2020). Optically-Thin Broadband Graphene-Membrane Photodetector. Nanomaterials, 10(3), 407.
Abstract: A broadband graphene-on-Si3N4-membrane photodetector for the visible-IR spectral range is realised by simple lithography and deposition techniques. Photo-current is produced upon illumination due to presence of the build-in potential between dissimilar metal electrodes on graphene as a result of charge transfer. The sensitivity of the photo-detector is similar to 1.1 mu A/W when irradiated with 515 and 1030 nm wavelengths; a smaller separation between the metal contacts favors gradient formation of the built-in electric field and increases the efficiency of charge separation. This optically-thin graphene-on-membrane photodetector and its interdigitated counterpart has the potential to be used within 3D optical elements, such as photonic crystals, sensors, and wearable electronics applications where there is a need to minimise optical losses introduced by the detector.
URI: https://hdl.handle.net/20.500.11851/3869
https://www.mdpi.com/2079-4991/10/3/407
ISSN: 20794991
Appears in Collections:Elektrik ve Elektronik Mühendisliği Bölümü / Department of Electrical & Electronics Engineering
PubMed İndeksli Yayınlar Koleksiyonu / PubMed Indexed Publications Collection
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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