Room-temperature quantum emission from interface excitons in mixed-dimensional heterostructures.

ABSTRACT: The development of van der Waals heterostructures has introduced unconventional phenomena that emerge at atomically precise interfaces. For example, interlayer excitons in two-dimensional transition metal dichalcogenides show intriguing optical properties at low temperatures. Here we report on room-temperature observation of interface excitons in mixed-dimensional heterostructures consisting of two-dimensional tungsten diselenide and one-dimensional carbon nanotubes. Bright emission peaks originating from the interface are identified, spanning a broad energy range within the telecommunication wavelengths. The effect of band alignment is investigated by systematically varying the nanotube bandgap, and we assign the new peaks to interface excitons as they only appear in type-II heterostructu

SUBMITTER: Fang N 

PROVIDER: S-EPMC11009238 | biostudies-literature | 2024 Apr

REPOSITORIES: biostudies-literature