Type

Journal Article

Authors

Georg S Duesberg
Paul K. Hurley
Valeria Nicolosi
Conor P Cullen
Clive Downing
Michael Schmidt
Lida Ansari
Farzan Gity
Scott Monaghan
Toby Hallam

Subjects

Physics

Topics
rhenium density functional theory hall effect semiconductor thin films vacancies crystal electron microscopy semiconductor doping molybdenum compounds x ray chemical analysis interstitials energy dispersive x ray spectroscopy scanning transmission electron microscopy semiconductor materials

Rhenium-doped MoS2 films (2017)

Abstract Tailoring the electrical properties of transition metal dichalcogenides by doping is one of the biggest challenges for the application of 2D materials in future electronic devices. Here, we report on a straightforward approach to the n-type doping of molybdenum disulfide (MoS2) films with rhenium (Re). High-Resolution Scanning Transmission Electron Microscopy and Energy-Dispersive X-ray spectroscopy are used to identify Re in interstitial and lattice sites of the MoS2 structure. Hall-effect measurements confirm the electron donating influence of Re in MoS2, while the nominally undoped films exhibit a net p-type doping. Density functional theory (DFT) modelling indicates that Re on Mo sites is the origin of the n-type doping, whereas S-vacancies have a p-type nature, providing an explanation for the p-type behaviour of nominally undoped MoS2 films.
Collections Ireland -> University College Cork -> Tyndall National Institute
Ireland -> University College Cork -> Tyndall National Institute - Journal Articles
Ireland -> University College Cork -> Research Institutes and Centres

Full list of authors on original publication

Georg S Duesberg, Paul K. Hurley, Valeria Nicolosi, Conor P Cullen, Clive Downing, Michael Schmidt, Lida Ansari, Farzan Gity, Scott Monaghan, Toby Hallam

Experts in our system

1
Georg Duesberg
Trinity College Dublin
Total Publications: 116
 
2
Paul K. Hurley
University College Cork
Total Publications: 78
 
3
Valeria Nicolosi
Trinity College Dublin
Total Publications: 67
 
4
Conor P Cullen
University College Cork
Total Publications: 8
 
5
Clive Downing
Trinity College Dublin
Total Publications: 11
 
6
Michael Schmidt
University College Cork
Total Publications: 42
 
7
Lida Ansari
University College Cork
Total Publications: 12
 
8
Farzan Gity
University College Cork
Total Publications: 26
 
9
Scott Monaghan
University College Cork
Total Publications: 32
 
10
Toby Hallam
Trinity College Dublin
Total Publications: 20