Photodetectors based on two-dimensional materials and organic thin-film heterojunctions Project supported by National Science Funds for Creative Research Groups of China (Grant No. 61421002). |
(a) Schematic diagram of the enhanced type-II heterojunction on 2DM (such as graphene) photoconductive photodetector. (b) Diagram of graphene/PTCDA/pentacene phototransistor structure. (c) Photoresponsivity of graphene/PTCDA/pentacene and control devices. Blue circles: the average thickness of PTCDA/pentacene and coverage of pentacene is 4 nm/1.3 L/82%) and control devices (gray squares: graphene/PTCDA; gray triangles: graphene/pentacene) at the laser power of 100 μW. (d) Diagram of graphene/C60/pentacene phototransistor structure.[ |
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