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Chemically exfoliated large-area two-dimensional flakes of molybdenum disulfide for device applications

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Author(s): Vivek Pachauri | Klaus Kern | Kannan Balasubramanian

Journal: APL Materials
ISSN 2166-532X

Volume: 1;
Issue: 3;
Start page: 032102;
Date: 2013;
Original page

ABSTRACT
A solution-based exfoliation method for obtaining large-area two-dimensional flakes of molybdenum disulfide, followed by the fabrication of electrical devices is presented in this manuscript. The exfoliation method is based on the use of an aprotic solvent, namely, acetonitrile under mild sonication steps. In order to fabricate devices, a dielectrophoresis technique is used for transferring MoS2 flakes site-specifically on to the electrode pairs pre-written on the glass chips. The devices fabricated thus can be operated as chemical sensor in liquids while investigations under photo illumination indicate that such devices can also efficiently function as photodetectors.
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