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- W4385436645 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 heterostructures. Room-temperature localization of low-energy interface excitons is indicated by extended lifetimes as well as small excitation saturation powers, and photon correlation measurements confirm single-photon emission. With mixed-dimensional van der Waals heterostructures where band alignment can be engineered, new opportunities for quantum photonics are envisioned." @default.
- W4385436645 created "2023-08-01" @default.
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- W4385436645 date "2023-07-28" @default.
- W4385436645 modified "2023-09-28" @default.
- W4385436645 title "Room-temperature quantum emission from interface excitons in mixed-dimensional heterostructures" @default.
- W4385436645 doi "https://doi.org/10.48550/arxiv.2307.15399" @default.
- W4385436645 hasPublicationYear "2023" @default.
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