Graphene’s optical response is characterized by constant absorption in the visible, electrically tunable absorption in the NIR-SWIR and plasmonic excitations in the midIR-LWIR spectrum. These traits make for interesting applications in broadband photodetection. To make the response more efficient we must integrate graphene with resonant photonic or plasmonic cavities. In a comprehensive modeling scheme of graphene-based optoelectronic applications, the optical, thermal, and electrical responses are considered within a self-consistent approach: absorption creates hot carriers, whose temperature distribution is determined by the thermal properties of graphene and the appropriate relaxation pathways and corresponding rates, which are all themselves functions of the temperature. Such a modelling approach will be presented, along with our recent studies on several graphene-based photodetector designs.
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