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Title: Few-layer MoS2 as nitrogen protective barrier
Authors: Akbalı, Barış
Yanılmaz, Alper
Tomak, Aysel
Tongay, Sefaattin
Çelebi, Cem
Şahin, Hasan
Akbalı, Barış
Yanılmaz, Alper
Tomak, Aysel
Çelebi, Cem
Şahin, Hasan
Izmir Institute of Technology. Physics
Izmir Institute of Technology. Materials Science and Engineering
Izmir Institute of Technology. Physics
Izmir Institute of Technology. Materials Science and Engineering
Izmir Institute of Technology. Photonics
Keywords: Density functional theory
Chemical vapor deposition
Coating performance
Liquid exfoliations
Nitrogen doping
Issue Date: Sep-2017
Publisher: IOP Publishing Ltd.
Source: Akbalı, B., Yanılmaz, A., Tomak, A., Tongay, S., Çelebi, C., and Şahin, H. (2017). Few-layer MoS2 as nitrogen protective barrier. Nanotechnology, 28(41). doi:10.1088/1361-6528/aa825e
Abstract: We report experimental and theoretical investigations of the observed barrier behavior of few-layer MoS2 against nitrogenation. Owing to its low-strength shearing, low friction coefficient, and high lubricity, MoS2 exhibits the demeanor of a natural N-resistant coating material. Raman spectroscopy is done to determine the coating capability of MoS2 on graphene. Surface morphology of our MoS2/graphene heterostructure is characterized by using optical microscopy, scanning electron microscopy, and atomic force microscopy. In addition, density functional theory-based calculations are performed to understand the energy barrier performance of MoS2 against nitrogenation. The penetration of nitrogen atoms through a defect-free MoS2 layer is prevented by a very high vertical diffusion barrier, indicating that MoS2 can serve as a protective layer for the nitrogenation of graphene. Our experimental and theoretical results show that MoS2 material can be used both as an efficient nanocoating material and as a nanoscale mask for selective nitrogenation of graphene layer.
ISSN: 0957-4484
Appears in Collections:Materials Science and Engineering / Malzeme Bilimi ve Mühendisliği
Photonics / Fotonik
Physics / Fizik
PubMed İndeksli Yayınlar Koleksiyonu / PubMed Indexed Publications Collection
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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