Improved Electrical Contact Properties of MoS2-Graphene Lateral Heterostructure

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2D materials have been extensively investigated in view of their excellent electrical/optical properties, with particular attention directed at the fabrication of vertical or lateral heterostructures. Although such heterostructures exhibit unexpected or enhanced properties compared to those of singly used 2D materials, their fabrication is challenged by the difficulty of realizing spatial control and large area integration. Herein, MoS2 is grown on patterned graphene at variable temperatures, combining the concept of lateral heterostructure with chemical vapor deposition to realize large area growth with precise spatial control, and probe the spatial distribution of graphene and MoS2 by a number of instrumental techniques. The prepared MoS2‐graphene lateral heterostructure is employed to construct field effect transistors with graphene as the source/drain and MoS2 as the channel, and the performance of these transistors (on/off ratio ≈109, maximum field effect mobility = 8.5 cm2 V−1 s−1) is shown to exceed that of their MoS2‐only counterparts.
Publisher
WILEY-V C H VERLAG GMBH
Issue Date
2019-02
Language
English
Article Type
Article
Citation

ADVANCED FUNCTIONAL MATERIALS, v.29, no.6, pp.1807550

ISSN
1616-301X
DOI
10.1002/adfm.201807550
URI
http://hdl.handle.net/10203/251505
Appears in Collection
EE-Journal Papers(저널논문)
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