Fig. 1. Schematic diagram of photodetector

Fig. 2. Schematic diagrams of the monolayer MoS₂ photodetector with and without adsorbates. (a) Without adsorbates^[31]; (b) with adsorbates^[32]

Fig. 3. Illustrations of different types of heterostructures. (a) MoS₂/WS₂ heterostructure forming type Ⅱ heterojunction^[34]; (b) MoS₂/MoSe₂ heterostructure forming type II heterojunction^[52]; (c) MoS₂/ZnPc heterostructure forming type Ⅱ heterojunction^[37]; (d) BaTiO₃/MoS₂ heterostructure forming type Ⅰ heterojunction^[38]

Fig. 4. MoS₂ photodetector controlled by ferroelectric polarization: equilibrium energy band diagrams of three different ferroelectric polarization states^[22]

Fig. 5. Schematic diagram of the MoS₂/Hf_0.5Zr_0.5O₂ photodetector^[39]

Fig. 6. Research of MoS₂ photodetector with plasmon resonance. (a)‒(d) Finite-difference time-domain simulation of plasmon resonance enhancement of local optical field^[73]; (e)‒(h) schematic reporesentation of plasmonic/MoS₂ heterostructures ^{[20, 40-41, 72]}