Interfacial transport modulation by intrinsic potential difference of janus TMDs based on CsPbI₃/J-TMDs heterojunctions.

ABSTRACT: Although perovskite/two-dimensional (2D) materials heterojunctions have been employed to improve the optoelectronic performance of perovskite photodetectors and solar cells, effects of the intrinsic potential difference (ΔV _in ) of asymmetrical 2D materials, like Janus TMDs (J-TMDs), were not revealed yet. Herein, by investigating the optoelectronic properties of CsPbI₃/J-TMDs heterojunctions, we find a reversible type-II band alignment related to the intensity and direction of ΔV _in , suggesting that carrier transport paths can be reversed by modulating the contact configuration of J-TMDs in the heterojunctions. Meanwhile, the band offset, carrier transfer efficiency and optical properties of those heterojunctions are directly d

SUBMITTER: Yuan H 

PROVIDER: S-EPMC8857601 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature