Surface Charge Transfer Doping of MoS₂ Monolayer by Molecules with Aggregation-Induced Emission Effect.

ABSTRACT: Surface charge transfer doping has attracted much attention in modulating the optical and electrical behavior of 2D transition metal dichalcogenides (TMDCs), where finding controllable and efficient dopants is crucial. Here, 1,1,2,2-tetraphenylethylene (TPE) derivative molecules with aggregation-induced emission (AIE) effect were selected as adjustable dopants. By designing nitro and methoxyl functional groups and surface coating, controlled p/n-type doping can be achieved on a chemical vapor deposition (CVD) grown monolayer, MoS₂. We investigated the electron transfer behavior between these two dopants and MoS₂ with fluorescence, Raman, X-ray photoelectron spectra and transient absorption spectra. 1,1,2,2-Tetrakis(4-nitrophenyl)ethane (TPE-4NO₂) with a neg

SUBMITTER: Sun R 

PROVIDER: S-EPMC8746604 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature