Photoswitchable optoelectronic properties of 2D MoSe₂/diarylethene hybrid structures.

ABSTRACT: The ability to modulate optical and electrical properties of two-dimensional (2D) semiconductors has sparked considerable interest in transition metal dichalcogenides (TMDs). Herein, we introduce a facile strategy for modulating optoelectronic properties of monolayer MoSe₂ with external light. Photochromic diarylethene (DAE) molecules formed a 2-nm-thick uniform layer on MoSe₂, switching between its closed- and open-form isomers under UV and visible irradiation, respectively. We have discovered that the closed DAE conformation under UV has its lowest unoccupied molecular orbital energy level lower than the conduction band minimum of MoSe₂, which facilitates photoinduced charge separation at the hybrid interface and quenches photoluminescence (PL) from monol

SUBMITTER: Park S 

PROVIDER: S-EPMC10973406 | biostudies-literature | 2024 Mar

REPOSITORIES: biostudies-literature