22 February 2018 Graphene bolometer for vis-IR spectral range made on nano-SiN membrane
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Abstract
A sensitive bolometric detector for visible and infrared wavelengths based on a novel assembly principle of a graphene monolayer on a nano/micro SiN membrane is realised. The basic operating principle of the optical detector relies on the absorption of electromagnetic radiation in the graphene and creation of a strong thermal gradient, rT, which is detected via the Seebeck effect: Voltage = S x ∇rT, where S is the Seebeck coefficient of graphene. A simple lithography-free deposition of two metal contacts with different electron work functions: Pd (by sputtering) and Ag (by jet printing and annealing) was used. Sensitivity of the bolometer was the same ~1:1 mV/mW at 1030 and 515 nm wavelengths.
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Tania Moein, Tania Moein, Darius Gailevičius, Darius Gailevičius, Tomas Katkus, Tomas Katkus, Soon Hock Ng, Soon Hock Ng, David J. Moss, David J. Moss, Mangirdas Malinauskas, Mangirdas Malinauskas, Saulius Juodkazis, Saulius Juodkazis, } "Graphene bolometer for vis-IR spectral range made on nano-SiN membrane", Proc. SPIE 10544, Advanced Fabrication Technologies for Micro/Nano Optics and Photonics XI, 105440H (22 February 2018); doi: 10.1117/12.2289467; https://doi.org/10.1117/12.2289467
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