Substrate-induced modulation of transient optical response of large-area monolayer MoS₂.

ABSTRACT: The intrinsic properties of two-dimensional (2D) transition-metal dichalcogenides (TMDs) are profoundly influenced by their interface conditions. Engineering the TMD/substrate interface is crucial for harnessing the unique optoelectronic properties of 2D TMDs in device applications. This study delves into how the transient optical properties of monolayer (ML) MoS₂ are affected by the substrate and film preparation processes, specifically focusing on the generation and recombination pathways of photoexcited carriers. Our experimental and theoretical analyses reveal that induced strain and defects during transfer process play pivotal roles in shaping these optical properties. Through femtosecond transient absorption measurements, we uncover the impact of substrate alterations on t

SUBMITTER: Soni A 

PROVIDER: S-EPMC11880329 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature