Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.11851/3913
Title: The effects of acid pretreatment and surface stresses on the evolution of impurity clusters and graphene formation on Cu foil
Authors: Senyıldız, Doğukan
Oğurtani, Ömer Tarık
Büke, Zarife Göknur
Keywords: Graphene
Copper foil
CVD
Impurities
Acid pretreatment
Surface stresses
Issue Date: Dec-2017
Publisher: ELSEVIER SCIENCE BV
Source: Senyildiz, D., Ogurtani, O. T., Buke, G. C. (2017). The effects of acid pretreatment and surface stresses on the evolution of impurity clusters and graphene formation on Cu foil. Applied Surface Science, 425, 873-878.
Abstract: In this study, the effects of acid pretreatment together with the surface stresses are studied systematically to control the densities of Si and Ca based impurities on the surface and to understand their effects on the final graphene morphology formed on Cu foil via CVD. In order to investigate the surface coverage and morphology of graphene, in addition to scanning electron microscope (SEM) studies, graphene grown on Cu foils are oxidized in air to reveal the graphene domains under the optical microscope (OM). Graphene formation is also confirmed using Raman spectroscopy directly on the Cu foil. Our studies show that the coverage and the morphology of the final graphene are strongly affected by the acid pretreatment because it removes the surface oxide layer and surface Ca impurities inherently present on the copper foil. Furthermore, it is found that the surface elastic stresses have also direct influence on the sizes and distribution of the surface impurities which affect the final morphology of graphene. (C) 2017 Elsevier B.V. All rights reserved.
URI: https://hdl.handle.net/20.500.11851/3913
https://www.sciencedirect.com/science/article/pii/S0169433217320822?via%3Dihub
ISSN: 1873-5584
0169-4332
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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