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Issue 40, 2018
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Controllable growth of two-dimensional WSe2 using salt as co-solvent

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Various structures of two-dimensional (2D) WSe2 were controllably grown in a chemical vapor deposition (CVD) system. Using salt as the co-solvent and surfactant, we were able to grow monolayer single-crystalline WSe2 flakes with lateral size of up to 215 μm and monolayer polycrystalline WSe2 with lateral size of a few millimeters on amorphous SiO2 substrates. Optical microscopy, atomic force microscopy, Raman spectra, photoluminescence spectra and X-ray photoelectron spectra measurements disclosed high quality of as-grown 2D WSe2. Moreover, multilayer WSe2 flakes with spiral dislocations and uniform size were also achieved. Our study demonstrates that the salt-assisted CVD technique can be applied for the controllable synthesis of 2D transition metal dichalcogenides with various structures and morphologies, paving the way for developing novel catalysts and electronic devices.

Graphical abstract: Controllable growth of two-dimensional WSe2 using salt as co-solvent

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The article was received on 15 Jul 2018, accepted on 10 Sep 2018 and first published on 11 Sep 2018

Article type: Paper
DOI: 10.1039/C8CE01162A
Citation: CrystEngComm, 2018,20, 6267-6272

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    Controllable growth of two-dimensional WSe2 using salt as co-solvent

    X. Wang, Y. Li, L. Zhuo, J. Zheng, X. Peng, Z. Jiao, X. Xiong, J. Han and W. Xiao, CrystEngComm, 2018, 20, 6267
    DOI: 10.1039/C8CE01162A

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