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. 2019 Apr 11;9(4):598. doi: 10.3390/nano9040598

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© 2019 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Diagram of the band alignments before and after the isolated monolayer α-CSe and β-CSe contact. The work functions (Φ) for the free-standing monolayer α-CSe, β-CSe and bilayer α-CSe/β-CSe are also provided. The vacuum level $E_{v a c u u m}$ is set to 0 eV and $E_{F}$ denotes the Fermi level.