Indirect doping effects from impurities in MoS2/h-BN heterostructures

Gillen R, Robertson J, Maultzsch J (2014)

Publication Status: Published

Publication Type: Journal article

Publication year: 2014

Journal

Physical Review B American Physical Society

Publisher: AMER PHYSICAL SOC

Book Volume: 90

Journal Issue: 7

DOI: 10.1103/PhysRevB.90.075437

Abstract

We performed density functional theory calculations on heterostructures of single layers of hexagonal BN and MoS2 to assess the effect of doping in the BN sheet and of interstitial Na atoms on the electronic properties of the adjacent MoS2 layer. Our calculations predict that n doping of the boron nitride subsystem by oxygen, carbon, and sulfur impurities causes noticeable charge transfer into the conduction band of the MoS2 sheet, while p doping by beryllium and carbon leaves the molybdenum disulphide layer largely unaffected. Intercalated sodium atoms lead to a significant increase of the interlayer distance in the heterostructure and to a metallic ground state of the MoS2 subsystem. The presence of such n dopants leads to a distinct change of valence-band and conduction-band offsets, suggesting that doped h-BN remains a suitable substrate and gate material for applications of n-type MoS2.

Authors with CRIS profile

Roland Gillen Lehrstuhl für Experimentalphysik Janina Maultzsch Lehrstuhl für Experimentalphysik

Involved external institutions

University of Cambridge GB United Kingdom (GB)

How to cite

APA:

Gillen, R., Robertson, J., & Maultzsch, J. (2014). Indirect doping effects from impurities in MoS2/h-BN heterostructures. Physical Review B, 90(7). https://doi.org/10.1103/PhysRevB.90.075437

MLA:

Gillen, Roland, John Robertson, and Janina Maultzsch. "Indirect doping effects from impurities in MoS2/h-BN heterostructures." Physical Review B 90.7 (2014).

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