Direct growth of graphene nanopatches on graphene sheets for highly conductive thin film applications

Wooseok Song; Ki Woong Kim; Sung-Jin Chang; Tae Jung Park; Sung Ho Kim; Min Wook Jung; Geonhee Lee; Sung Myung; Jongsun Lim; Sun Suk Lee; Ki-Seok An

doi:10.1039/C4TC02283A

Direct growth of graphene nanopatches on graphene sheets for highly conductive thin film applications†

Wooseok Song,‡^a Ki Woong Kim,‡^a Sung-Jin Chang,^b Tae Jung Park,^b Sung Ho Kim,^a Min Wook Jung,^a Geonhee Lee,^a Sung Myung,*^a Jongsun Lim,^a Sun Suk Lee^a and Ki-Seok An^a

Author affiliations

* Corresponding authors

^a Thin Film Materials Research Group, Korea Research Institute of Chemical Technology (KRICT), Yuseong Post Office Box 107, Daejeon 305-600, Republic of Korea
E-mail: msung@krict.re.kr

^b Department of Chemistry, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, Republic of Korea

Abstract

Graphene nanopatches (GNs) on graphene films grown by chemical vapor deposition (CVD) were synthesized by Ni nanoparticle assembly and subsequent CVD growth to enhance their electrical conductivity. As a result, the sheet resistance of the hexagonally shaped GN-assembled graphene films decreased from 681.7 ± 11.2 to 527.2 ± 47.0 Ω sq⁻¹ with 97.9% transparency. This improvement in electrical conductivity was the result of p-type doping of the GNs on graphene films and the generation of additional charge carrier conducting paths to diminish defect scattering, which was a result of the enhanced extracted-hole mobility of the GN-assembled graphene films.

Journal of Materials Chemistry C

Direct growth of graphene nanopatches on graphene sheets for highly conductive thin film applications†

Abstract

Supplementary files

Article information

Download Citation

Author version available

Permissions

Direct growth of graphene nanopatches on graphene sheets for highly conductive thin film applications

Social activity

Search articles by author

Spotlight

Advertisements