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.
Highlights
The possibility to access and investigate atomic layers of a material is an interesting prospect driving many experiments around the globe
MoS2-based 2D devices have been shown as excellent field-effect transistors and logic gates operable at room temperatures suggesting their direct application in integrated circuits and other areas.[13,14,15,16]
Mechanical exfoliation of MoS2 crystals followed by e-beam lithography (EBL) is the standard procedure used for the fabrication of 2D devices of MoS2
Summary
The possibility to access and investigate atomic layers of a material is an interesting prospect driving many experiments around the globe. Exfoliated large-area twodimensional flakes of molybdenum disulfide for device applications
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