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Preparation of controllable-thickness 1T@2H-MoS2 thin films by pulsed laser-induced synthesis and the selective separation of 1T phase

Abstract

Ultrathin 1T@2H-MoS2 films have excellent electronic and optical properties, which indicate potential applicability in optics, electronics, energy storage, and sensing technology. However, finding an efficient method to produce 1T@2H-MoS2 film with controllable thickness is challenging. This study describes a quick synthesis (5-10 min) of 1T@2H-MoS2 thin films on Si/SiO2 substrates by a novel pulsed laser irradiation method. We verify the photodecomposition reaction model by measuring the UV-Vis absorption spectrum of the reactants. The thickness of the synthesized MoS2 film can be controlled by adjusting the concentration of the precursor. Structural characterizations confirm that both the 1T and 2H phases exist in the MoS2 film. The 1T phase enhances the conductive behavior of the MoS2 film and induces magnetism. Furthermore, pure 1T-MoS2 can be separated selectively from the MoS2 film under specific technological conditions using pulsed laser-induced synthesis. This approach is suitable for the synthesis of films of MoS2 and other 2D materials, including 1T phase-pure films.

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Publication details

The article was received on 01 Aug 2018, accepted on 06 Oct 2018 and first published on 08 Oct 2018


Article type: Paper
DOI: 10.1039/C8TC03815E
Citation: J. Mater. Chem. C, 2018, Accepted Manuscript
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    Preparation of controllable-thickness 1T@2H-MoS2 thin films by pulsed laser-induced synthesis and the selective separation of 1T phase

    Y. Hu, X. Zeng, T. Ren, S. Wu, W. Wang, Y. Zeng, G. Zhou, Z. Guo, W. Jin, S. . Wang , Y. Xiao and J. Lu, J. Mater. Chem. C, 2018, Accepted Manuscript , DOI: 10.1039/C8TC03815E

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