Open AccessMolecular dynamics study of ripples in graphene monolayer on silicon surface
Author(s) -
Qin Ye-Hong,
Tang Chao,
Chunxiao Zhang,
Lijun Meng,
Jianxin Zhong
Publication year - 2015
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.64.016804
Subject(s) - graphene , materials science , monolayer , graphene nanoribbons , annealing (glass) , molecular dynamics , nanotechnology , silicon , chemical physics , semiconductor , condensed matter physics , bilayer graphene , substrate (aquarium) , optoelectronics , composite material , computational chemistry , chemistry , physics , oceanography , geology
By using the classical molecular dynamics and the simulated annealing techniques, the evolutions of the rippled morphology in single atomic graphenes placed on the Si (100), Si (111) and Si (211) surfaces respectively are performed at an atomic level. Our results show that the monolayer graphene sheets on the different Si surfaces form atomic scale rippled structures. A graphene monolayer prepared on Si surface forms rippled structure due to the relative lattice mismatch between graphene and Si substrate. The rippled morphology of graphene sheet on Si surface is strongly dependent on the annealing temperature. Such ripples will directly affect the adhesion strength between graphene and Si substrate. These findings are useful for understanding the structural morphology and stability of graphene on the semiconductor Si substrate, which will provide an analysis reference for further applications of graphene.