Fig. 2: Conventional band alignment theory for interface charge transfer.

a–c The diagram of interface charge transfer in MoS2/CCZTS (a), MoS2/Pd/CCZTS (b) and MoS2/Au/CCZTS (c) heterojunction photocathodes.
a–c The diagram of interface charge transfer in MoS2/CCZTS (a), MoS2/Pd/CCZTS (b) and MoS2/Au/CCZTS (c) heterojunction photocathodes.