Transport and Field Emission Properties of MoS2 Bilayers
Department of Physics “E.R. Caianiello”, University of Salerno, 84084 Fisciano, Italy
CNR-SPIN Salerno, 84084 Fisciano, Italy
Department of Physical and Chemical Sciences, University of L’Aquila, and CNR-SPIN L’Aquila, 67100 L’Aquila, Italy
Author to whom correspondence should be addressed.
Received: 9 February 2018 / Revised: 1 March 2018 / Accepted: 6 March 2018 / Published: 8 March 2018
PDF [2550 KB, uploaded 9 March 2018]
We report the electrical characterization and field emission properties of
bilayers deposited on a
substrate. Current–voltage characteristics are measured in the back-gate transistor configuration, with
contacts patterned by electron beam lithography. We confirm the n-type character of as-grown
and we report normally-on field-effect transistors. Local characterization of field emission is performed inside a scanning electron microscope chamber with piezo-controlled tungsten tips working as the anode and the cathode. We demonstrate that an electric field of
is able to extract current from the flat part of
bilayers, which can therefore be conveniently exploited for field emission applications even in low field enhancement configurations. We show that a Fowler–Nordheim model, modified to account for electron confinement in two-dimensional (2D) materials, fully describes the emission process.
This is an open access article distributed under the Creative Commons Attribution License
which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
Share & Cite This Article
MDPI and ACS Style
Urban, F.; Passacantando, M.; Giubileo, F.; Iemmo, L.; Di Bartolomeo, A. Transport and Field Emission Properties of MoS2 Bilayers. Nanomaterials 2018, 8, 151.
Urban F, Passacantando M, Giubileo F, Iemmo L, Di Bartolomeo A. Transport and Field Emission Properties of MoS2 Bilayers. Nanomaterials. 2018; 8(3):151.
Urban, Francesca; Passacantando, Maurizio; Giubileo, Filippo; Iemmo, Laura; Di Bartolomeo, Antonio. 2018. "Transport and Field Emission Properties of MoS2 Bilayers." Nanomaterials 8, no. 3: 151.
Show more citation formats
Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.
[Return to top]
For more information on the journal statistics, click here
Multiple requests from the same IP address are counted as one view.