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- W3110102382 abstract "Abstract The Van der Waals (vdWs) hetero-structures consist of two-dimensional materials have received extensive attention, which is due to its attractive electrical and optoelectronic properties. In this paper, the high-quality large-size graphene film was first prepared by the chemical vapor deposition (CVD) method; then, graphene film was transferred to SiO 2 /Si substrate; next, the graphene/WS 2 and graphene/MoS 2 hetero-structures were prepared by the atmospheric pressure chemical vapor deposition method, which can be achieved by directly growing WS 2 and MoS 2 material on graphene/SiO 2 /Si substrate. Finally, the test characterization of graphene/TMDs hetero-structures was performed by AFM, SEM, EDX, Raman and PL spectroscopy to obtain and grasp the morphology and luminescence laws. The test results show that graphene/TMDs vdWs hetero-structures have the very excellent film quality and spectral characteristics. There is the built-in electric field at the interface of graphene/TMDs heterojunction, which can lead to the effective separation of photo-generated electron–hole pairs. Monolayer WS 2 and MoS 2 material have the strong broadband absorption capabilities, the photo-generated electrons from WS 2 can transfer to the underlying p -type graphene when graphene/WS 2 hetero-structures material is exposed to the light, and the remaining holes can induced the light gate effect, which is contrast to the ordinary semiconductor photoconductors. The research on spectral characteristics of graphene/TMDs hetero-structures can pave the way for the application of novel optoelectronic devices." @default.
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- W3110102382 date "2020-11-25" @default.
- W3110102382 modified "2023-10-03" @default.
- W3110102382 title "Research on the Preparation and Spectral Characteristics of Graphene/TMDs Hetero-structures" @default.
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- W3110102382 doi "https://doi.org/10.1186/s11671-020-03439-1" @default.
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