Oxidation-assisted graphene heteroepitaxy on copper foil

Reckinger, N. ; Tang, X. ; Joucken, F. ; Lajaunie, L. ; Arenal, R. (Universidad de Zaragoza) ; Dubois, E. ; Hackens, B. ; Henrard, L. ; Colomer, J.F.

Resumen: We propose an innovative, easy-to-implement approach to synthesize aligned large-area single-crystalline graphene flakes by chemical vapor deposition on copper foil. This method doubly takes advantage of residual oxygen present in the gas phase. First, by slightly oxidizing the copper surface, we induce grain boundary pinning in copper and, in consequence, the freezing of the thermal recrystallization process. Subsequent reduction of copper under hydrogen suddenly unlocks the delayed reconstruction, favoring the growth of centimeter-sized copper (111) grains through the mechanism of abnormal grain growth. Second, the oxidation of the copper surface also drastically reduces the nucleation density of graphene. This oxidation/reduction sequence leads to the synthesis of aligned millimeter-sized monolayer graphene domains in epitaxial registry with copper (111). The as-grown graphene flakes are demonstrated to be both single-crystalline and of high quality.

Idioma: Inglés

DOI: 10.1039/c6nr02936a

Año: 2016

Publicado en: NANOSCALE 8, 44 (2016), 18751-18759
ISSN: 2040-3364

Factor impacto JCR: 7.367 (2016)

Categ. JCR: MATERIALS SCIENCE, MULTIDISCIPLINARY rank: 23 / 275 = 0.084 (2016) - Q1 - T1
Categ. JCR: NANOSCIENCE & NANOTECHNOLOGY rank: 13 / 87 = 0.149 (2016) - Q1 - T1
Categ. JCR: CHEMISTRY, MULTIDISCIPLINARY rank: 21 / 166 = 0.127 (2016) - Q1 - T1
Categ. JCR: PHYSICS, APPLIED rank: 13 / 147 = 0.088 (2016) - Q1 - T1

Factor impacto SCIMAGO: 2.789 - Nanoscience and Nanotechnology (Q1) - Materials Science (miscellaneous) (Q1)

Financiación: info:eu-repo/grantAgreement/EC/FP7/312483/EU/Enabling Science and Technology through European Electron Microscopy/ESTEEM 2
Financiación: info:eu-repo/grantAgreement/EC/FP7/604391/EU/Graphene-Based Revolutions in ICT And Beyond/GRAPHENE
Financiación: info:eu-repo/grantAgreement/EC/H2020/642742/EU/Graphene-based nanomaterials for touchscreen technologies: Comprehension, Commerce and Communication/Enabling Excellence
Financiación: info:eu-repo/grantAgreement/ES/MINECO/FIS2013-46159-C3-3-P

Tipo y forma: Article (PostPrint)

Área (Departamento): Área Física Materia Condensada (Dpto. Física Materia Condensa.)