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Issue 2, 2015
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Modulating the phase transition between metallic and semiconducting single-layer MoS2 and WS2 through size effects

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Abstract

The first-principles calculations are performed to investigate the electronic properties and the atomic mechanism of the single layer MoS2 or WS2 homo-junction structure. The results reveal that both the stability and electronic structure of the homo-junction structure are greatly affected by the type of boundaries, which connect the different phase structures, either the semiconducting hexagonal (H) structure or the metallic trigonal (T) structure. Through tuning the size of the lateral homo-junction structure of either MoS2 or WS2, the phase transformation between H and T can occur. Interestingly, the electronic structures of homo-junction structures can be tuned between the metal and the semiconductor by changing the size of the nanoribbons.

Graphical abstract: Modulating the phase transition between metallic and semiconducting single-layer MoS2 and WS2 through size effects

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Publication details

The article was received on 20 Oct 2014, accepted on 04 Nov 2014 and first published on 04 Nov 2014


Article type: Paper
DOI: 10.1039/C4CP04775C
Phys. Chem. Chem. Phys., 2015,17, 1099-1105

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    Modulating the phase transition between metallic and semiconducting single-layer MoS2 and WS2 through size effects

    Z. Hu, S. Zhang, Y. Zhang, D. Wang, H. Zeng and L. Liu, Phys. Chem. Chem. Phys., 2015, 17, 1099
    DOI: 10.1039/C4CP04775C

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