Oxidation behavior of graphene-coated copper at intrinsic graphene defects of different origins.

Citation data:

Nature communications, ISSN: 2041-1723, Vol: 8, Issue: 1, Page: 1549

Publication Year:
2017
Captures 31
Readers 31
Citations 6
Citation Indexes 6
Repository URL:
http://scholarworks.unist.ac.kr/handle/201301/22971
PMID:
29147017
DOI:
10.1038/s41467-017-01814-8
Author(s):
Kwak, Jinsung; Jo, Yongsu; Park, Soon-Dong; Kim, Na Yeon; Kim, Se-Yang; Shin, Hyung-Joon; Lee, Zonghoon; Kim, Sung Youb; Kwon, Soon-Yong
Publisher(s):
Springer Nature; NATURE PUBLISHING GROUP
Tags:
Chemistry; Biochemistry, Genetics and Molecular Biology; Physics and Astronomy
article description
The development of ultrathin barrier films is vital to the advanced semiconductor industry. Graphene appears to hold promise as a protective coating; however, the polycrystalline and defective nature of engineered graphene hinders its practical applications. Here, we investigate the oxidation behavior of graphene-coated Cu foils at intrinsic graphene defects of different origins. Macro-scale information regarding the spatial distribution and oxidation resistance of various graphene defects is readily obtained using optical and electron microscopies after the hot-plate annealing. The controlled oxidation experiments reveal that the degree of structural deficiency is strongly dependent on the origins of the structural defects, the crystallographic orientations of the underlying Cu grains, the growth conditions of graphene, and the kinetics of the graphene growth. The obtained experimental and theoretical results show that oxygen radicals, decomposed from water molecules in ambient air, are effectively inverted at Stone-Wales defects into the graphene/Cu interface with the assistance of facilitators.