Deakin University
Browse

File(s) under permanent embargo

Governing rule for dynamic formation of grain boundaries in grown graphene

journal contribution
posted on 2015-06-01, 00:00 authored by W Guo, B Wu, Y Li, Lifeng WangLifeng Wang, J Chen, B Chen, Z Zhang, L Peng, S Wang, Y Liu
Grains and grain boundaries (GBs) in graphene are vital for the control of its properties; however, engineering or controlling them by growth remains a great challenge. Here we discover that the dynamic formation of GBs within chemical vapor deposited polygonal graphene flakes is described by a geometric rule. A GB is formed to be symmetrically tilted and a continuous straight line, and the key parameters including end point, direction of GB line, and misorientation angles between adjacent graphene grains can be determined solely by the geometries of the polygonal graphene flakes. We also show the growth control over the length of straight graphene GB lines and demonstrate the capability of parallel fabrication of field-effect transistor devices across predicted GBs in a straightforward manner. This work constitutes a significant step forward in engineering grains and GBs in graphene.

History

Journal

ACS Nano

Volume

9

Pagination

5792-5798

Location

Washington, D.C.

ISSN

1936-0851

eISSN

1936-086X

Language

eng

Publication classification

C1 Refereed article in a scholarly journal

Issue

6

Publisher

ACS Publications

Usage metrics

    Research Publications

    Categories

    No categories selected

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC