Graphene is seen as a potential candidate for photodetection applications. Now, the researchers have studied dual gated bilayer graphene to observe the gating effect on its photothermal response. They have found a significant role of hot electron thermal relaxation in defining the photovoltaic response of graphene.
http://prl.aps.org/abstract/PRL/v110/i24/e247402
http://prl.aps.org/abstract/PRL/v110/i24/e247402
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