Unraveling the Effect of Stacking Configurations on Charge Transfer in WS₂ and Organic Semiconductor Heterojunctions.

ABSTRACT: Photoinduced interfacial charge transfer plays a critical role in energy conversion involving van der Waals (vdW) heterostructures constructed of inorganic nanostructures and organic materials. However, the effect of molecular stacking configurations on charge transfer dynamics is less understood. In this study, we demonstrated the tunability of interfacial charge separation in a type-II heterojunction between monolayer (ML) WS₂ and an organic semiconducting molecule [2-(3″',4'-dimethyl-[2,2':5',2':5″,2″'-quaterthiophen]-5-yl)ethan-1-ammonium halide (4Tm)] by rational design of relative stacking configurations. The assembly between ML-WS₂ and the 4Tm molecule forms a face-to-face stacking when 4Tm molecules are in a self-aggregation state. In contrast, a face-to-edge

SUBMITTER: Zhang S 

PROVIDER: S-EPMC10526440 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature