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Title: CVD synthesis and characterization of thin Mo2C crystals
Authors: Türker, Furkan
Caylan, Ömer R.
Mehmood, Naveed
Kasırga, Talip S.
Sevik, Cem
Büke, Zarife Göknur
Keywords: 2D Mo2C
copper foil
Issue Date: Jun-2020
Publisher: WILEY
Source: Turker, F., Caylan, O. R., Mehmood, N., Kasirga, T. S., Sevik, C., and Cambaz Buke, G. (2020). CVD synthesis and characterization of thin Mo2C crystals. Journal of the American Ceramic Society.
Abstract: In this study, we present an investigation on the growth of thin Mo2C crystals via chemical vapor deposition using CH4. Optical microscopy (OM), scanning electron microscopy (SEM), atomic force microscopy(AFM), and Raman spectroscopy studies show that the morphology and the thickness of Mo2C crystals are strongly affected by the impurities in the system, the thickness of the copper substrate, and the graphene presence on Cu surface prior to Mo2C formation. Our studies show that during the CVD process, orthorhombic Mo2C crystals grow along the [100] direction on two different regions: directly on Cu surface or on graphene covered regions. Mo2C crystals that form on graphene are found to be thinner and less defective compared to the ones formed on the Cu surface. This is attributed to graphene acting as an additional diffusion barrier for Mo atoms diffusing through the copper. In addition to the graphene beneath the Mo2C crystal, Raman studies indicate that graphene may grow also on top of the Mo2C crystal, forming a graphene/Mo2C/graphene sandwich structure which may offer interesting properties for electronic applications.
ISSN: 1551-2916
Appears in Collections:Malzeme Bilimi ve Nanoteknoloji Mühendisliği Bölümü / Department of Material Science & Nanotechnology Engineering
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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