Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/6706
Title: Few-layer MoS2 as nitrogen protective barrier
Authors: Akbalı, Barış
Yanılmaz, Alper
Tomak, Aysel
Tongay, Sefaattin
Çelebi, Cem
Şahin, Hasan
Keywords: Density functional theory
Chemical vapor deposition
Coating performance
Graphene
Liquid exfoliations
Nitrogen doping
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.
URI: http://doi.org/10.1088/1361-6528/aa825e
http://hdl.handle.net/11147/6706
ISSN: 0957-4484
0957-4484
1361-6528
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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