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- W4289731633 abstract "Abstract Ultrathin semiconducting van der Waals (vdW) heterostructures based on transition metal dichalcogenides (TMDs) play a critical role in developing next‐generation electronic and optoelectronic devices. The replacement of one component of the heterostructure by transition metal oxides (TMOs) certainly brings in numerous benefits including long‐term stability and novel functionalities. However, the single‐step chemical‐vapor deposition growth of TMOs/TMDs vdW heterostructures, as a highly desired approach for large‐scale fabrication and practical implementation, is challenging due to contradictory growth atmospheres of TMOs and TMDs. Here, the single‐step growth of an ultrathin WO 3–x /WS 2 vdW heterostructure based on the quantity‐driven discrepant interaction between S and the precursor, in which S induces sulfidation to produce WS 2 in the S‐rich phase and is changed to the reduction role to obtain sub‐stoichiometric WO 3–x in the S‐deficient phase is realized. Both WO 3–x and WS 2 exhibit semiconducting properties with a favorable type‐II band alignment. A wide response across the entire visible spectrum with a large photo‐responsivity of 4375 A W −1 , a detectivity of 5.47 × 10 11 Jones, and sub‐ms switching kinetics at 405 nm is achieved without gating bias, which is significantly improved over other reported ultrathin vdW heterostructures. This study demonstrates the possibility of single‐step‐growing TMOs/TMDs vdW heterostructures and their strong potential in high‐performance optoelectronic devices." @default.
- W4289731633 created "2022-08-04" @default.
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- W4289731633 date "2022-08-03" @default.
- W4289731633 modified "2023-10-13" @default.
- W4289731633 title "A Single‐Step‐Grown Semiconducting vdW Heterostructure of Tungsten Oxide–Sulfide for High‐Performance Photodetection" @default.
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- W4289731633 doi "https://doi.org/10.1002/adfm.202202239" @default.
- W4289731633 hasPublicationYear "2022" @default.
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