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Optically-Thin Broadband Graphene-Membrane Photodetector

Optical Sciences Centre, Swinburne University of Technology, John St., Hawthorn, VIC 3122, Australia
The ARC Training Centre in Surface Engineering for Advanced Materials (SEAM), School of Science, Swinburne University of Technology, Hawthorn, VIC 3122, Australia
Laser Research Center, Faculty of Physics, Vilnius University, Saulėtekio Ave. 10, LT-10223 Vilnius, Lithuania
Department of Electrical and Electronics Engineering, TOBB University of Economics and Technology, Ankara 06560, Turkey
Research Institute of Electronics, Shizuoka University, 3-5-1 Johoku, Naka-ku, Hamamatsu 432-8561, Japan
Dep. de Física, Universitat Politècnica de Catalunya (UPC), Colom 11, E-08222 Terrassa, Spain
Institució Catalana de Recerca i Estudis Avançats (ICREA), Passeig Lluís Companys 23, E-08010 Barcelona, Spain
Tokyo Tech World Research Hub Initiative (WRHI), School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1, Ookayama, Meguro-ku, Tokyo 152-8550, Japan
Authors to whom correspondence should be addressed.
T.M. and D.G. contributed equally.
Nanomaterials 2020, 10(3), 407;
Received: 20 December 2019 / Revised: 14 February 2020 / Accepted: 18 February 2020 / Published: 25 February 2020
(This article belongs to the Special Issue Smart Nano-Devices)
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 ∼1.1 μA/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. View Full-Text
Keywords: optically thin photodetector; graphene; Si3N4 membrane; thermopower optically thin photodetector; graphene; Si3N4 membrane; thermopower
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MDPI and ACS Style

Moein, T.; Gailevičius, D.; Katkus, T.; Ng, S.H.; Lundgaard, S.; Moss, D.J.; Kurt, H.; Mizeikis, V.; Staliūnas, K.; Malinauskas, M.; Juodkazis, S. Optically-Thin Broadband Graphene-Membrane Photodetector. Nanomaterials 2020, 10, 407.

AMA Style

Moein T, Gailevičius D, Katkus T, Ng SH, Lundgaard S, Moss DJ, Kurt H, Mizeikis V, Staliūnas K, Malinauskas M, Juodkazis S. Optically-Thin Broadband Graphene-Membrane Photodetector. Nanomaterials. 2020; 10(3):407.

Chicago/Turabian Style

Moein, Tania, Darius Gailevičius, Tomas Katkus, Soon H. Ng, Stefan Lundgaard, David J. Moss, Hamza Kurt, Vygantas Mizeikis, Kȩstutis Staliūnas, Mangirdas Malinauskas, and Saulius Juodkazis. 2020. "Optically-Thin Broadband Graphene-Membrane Photodetector" Nanomaterials 10, no. 3: 407.

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