Figure 4.

Different photodetection mechanisms. a) Photovoltaic effect. b) Bolometric effect via thermal excitation of electrons from valence band to conduction band. c) Increased probability of inter‐nanosheet carrier hopping due to photoinduced temperature increase. d) Photothermoelectric (PTE) effect due to asymmetric illumination (left) and asymmetric electrode configuration (right). e) Photogating effect due to carriers trapped in defects. f) Photogating effect due to trapped carriers in the sensitizer material. g) Plasmonic‐enhanced photodetection by metal nanoparticles.