Photodetectors based on two-dimensional materials and organic thin-film heterojunctions<xref rid="cpb_28_1_017103fn1" ref-type="fn">*</xref><fn id="cpb_28_1_017103fn1"><label>*</label><p>Project supported by National Science Funds for Creative Research Groups of China (Grant No. 61421002).</p></fn>

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).

Han Jiayue¹, Wang Jun^{1, 2, †}

(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.^[88] (e) The transfer characteristic curve under illumination and in the dark.^[88] (f) 3D schematic view of the graphene/P3HT/perovskite vertical heterojunction phototransistor.^[85]