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- W3181079638 abstract "Monolayer transition metal dichalcogenides (ML-TMDCs) are a versatile platform to explore the transport dynamics of the tightly bound excitonic states. The diffusion of neutral excitons in various ML-TMDCs has been observed. However, the transport of charged excitons (trions), which can be driven by an in-plane electric field and facilitate the formation of an excitonic current, has yet been well investigated. Here, we report the direct observation of diffusion and drift of the trions in ML-WS2 through spatially and time-resolved photoluminescence. An effective diffusion coefficient of 0.47 cm2/s was extracted from the broadening of spatial profiles of the trion emission. When an in-plane electric field is applied, the spatial shift of the trion emission profiles indicated a drift velocity of 7400 cm/s. Both the diffusion caused broadening and the drift caused shift of the emission profiles saturate because of the Coulomb interactions between trions and the background charges." @default.
- W3181079638 created "2021-07-19" @default.
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- W3181079638 date "2021-07-12" @default.
- W3181079638 modified "2023-10-14" @default.
- W3181079638 title "Observation of Diffusion and Drift of the Negative Trions in Monolayer WS<sub>2</sub>" @default.
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- W3181079638 doi "https://doi.org/10.1021/acs.nanolett.1c02351" @default.
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