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Publication - Professor Siyuan Yu

    Integrating Graphene/MoS2 Heterostructure with SiNx Waveguide for Visible Light Detection at 532 nm Wavelength

    Citation

    Wu, Z, Zhang, T, Chen, Y, Zhang, Y & Yu, S, 2019, ‘Integrating Graphene/MoS2 Heterostructure with SiNx Waveguide for Visible Light Detection at 532 nm Wavelength’. Physica Status Solidi - Rapid Research Letters, vol 13.

    Abstract

    In this work, a silicon nitride waveguide-integrated photodetector based on a transferred graphene/MoS2 heterostructure has been reported, where photo-generated electron–hole pairs are produced in the CVD-grown MoS2 monolayer and rapidly separated at the heterostructure interface, followed by electrons continuously transferring to the graphene layer induced by an effective built-in electrical field. By tuning the back-gate voltage to control the Fermi-level in graphene layer, a competitive photoresponsivity of 440 mA W−1 at 532 nm is achieved. Furthermore, these exhibit a photoresponse rate with a rise time of 80 ms and a fall time of 30 ms. It is believed that the 2D heterostructure has potentials for future applications in integrated optoelectronic circuits.

    Full details in the University publications repository