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) Current–voltage characteristics of photodiodes with graphene electrodes without V_G in the dark and under light illumination (λ = 480 and 670 nm, light power is 500 μW).^[115] (b) 3D schematic view of organic vertical p–n junction photodiodes with the graphene electrode.^[115] (c) Responsivity and detectivity of the device as a function of grid voltage.^[115] (d) Digital image of graphene/DEPOT:PSS hybrid ink; molecular structures of graphene and PEDOT:PSS.^[116] (e) The current–voltage characteristics of the photodetectors fabricated on a PET substrate.^[116] (f) The on/off ratio characteristics of the graphene/PEDOT:PSS photodetector at a bias voltage of 0 V before and after the bending test.^[116]