(color online) Other device applications of 2D materials. (a) GQDs tuning MoS2 luminescence.[80] (b) Plasmonic hot electrons enhanced MoS2 photocatalysis.[81] (c) Plasmon-induced photo-thermo effect on MoS2 monolayer.[82] (d) Photonic crystal microcavity pumping MoS2 laser.[83] (e) Electrically controlled valley-LED device.[89]