File Download

There are no files associated with this item.

  • Find it @ UNIST can give you direct access to the published full text of this article. (UNISTARs only)
Related Researcher

DingFeng

Ding, Feng
Read More

Views & Downloads

Detailed Information

Cited time in webofscience Cited time in scopus
Metadata Downloads

Full metadata record

DC Field Value Language
dc.citation.endPage 9908 -
dc.citation.number 15 -
dc.citation.startPage 9902 -
dc.citation.title JOURNAL OF PHYSICAL CHEMISTRY C -
dc.citation.volume 123 -
dc.contributor.author Zhuang, Jianing -
dc.contributor.author Zhao, Wen -
dc.contributor.author Qiu, Lu -
dc.contributor.author Xin, John -
dc.contributor.author Dong, Jichen -
dc.contributor.author Ding, Feng -
dc.date.accessioned 2023-12-21T19:13:46Z -
dc.date.available 2023-12-21T19:13:46Z -
dc.date.created 2019-05-16 -
dc.date.issued 2019-04 -
dc.description.abstract In chemical vapor depositiongrowth, depending on the growth condition, graphene islands present various shapes, such as circular, hexagonal, square, rectangular star-like, and fractal. We present a systematic phase-field model study to explore the role of three key factors, carbon flux, precursor concentration on the metal surface, and diffusion of carbon precursors, in the determination of the graphene domain shape. We find that the size of the depletion zone, that is, the area with a carbon precursor concentration gradient around the circumference of the growing graphene island, is of critical importance. In case of no depletion zone or if the size of the depletion zone is much larger than that of the graphene island, the graphene island will present the shape of a regular hexagon. However, star-like graphene islands will form if the size of the depletion zone is comparable to that of the graphene island. Further increasing the size of the graphene island will lead to a fractal-like graphene island with multiscaled branches. Although an extremely small depletion zone will lead to a graphene island with a regular shape, its edges are found to be rough. The three key parameters affect the shape of graphene by tuning the size of the depletion zone. Based on this study, a series of experimental puzzles are properly explained and the conditions for growing high-quality graphene emerge. -
dc.identifier.bibliographicCitation JOURNAL OF PHYSICAL CHEMISTRY C, v.123, no.15, pp.9902 - 9908 -
dc.identifier.doi 10.1021/acs.jpcc.9b00761 -
dc.identifier.issn 1932-7447 -
dc.identifier.scopusid 2-s2.0-85064672135 -
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/26741 -
dc.identifier.url https://pubs.acs.org/doi/10.1021/acs.jpcc.9b00761 -
dc.identifier.wosid 000465488600030 -
dc.language 영어 -
dc.publisher American Chemical Society -
dc.title Morphology Evolution of Graphene during Chemical Vapor Deposition Growth: A Phase-Field Theory Simulation -
dc.type Article -
dc.description.isOpenAccess FALSE -
dc.relation.journalWebOfScienceCategory Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary -
dc.relation.journalResearchArea Chemistry; Science & Technology - Other Topics; Materials Science -
dc.type.docType Article -
dc.description.journalRegisteredClass scie -
dc.description.journalRegisteredClass scopus -
dc.subject.keywordPlus Chemical vapor deposition -
dc.subject.keywordPlus Fractals -
dc.subject.keywordPlus Morphology -
dc.subject.keywordPlus Stars -
dc.subject.keywordPlus Depletion zones -
dc.subject.keywordPlus Diffusion of carbons -
dc.subject.keywordPlus Growth conditions -
dc.subject.keywordPlus Morphology evolution -
dc.subject.keywordPlus Phase field models -
dc.subject.keywordPlus Phase field theory -
dc.subject.keywordPlus Precursor concentration -
dc.subject.keywordPlus Regular hexagon -
dc.subject.keywordPlus Graphene -

qrcode

Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.