Self-Aligned Single-Crystal Graphene Grains

Dechao Geng, Birong Luo, Jie Xu, Yunlong Guo, Bin Wu, Wenping Hu, Yunqi Liu, Gui Yu

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

The precisely controllable growth of self-aligned single-crystal graphene grains on liquid Cu surface by ambient pressure chemical vapor deposition is reported. Large scale monolayer graphene arrays are modulated by varying growth conditions such as fl ow rate of carbon source, growth temperature, and growth time. Further, bilayer graphene grains are also controllably prepared under optimized growth conditions. The self-alignment mechanism of graphene is also studied and a growth model is proposed to explain that process involving surface tension of liquid phase. In all, the growth mechanism of graphene arrays is fi rstly probed and the grown graphene arrays show reasonable mobility and high current density, posing great potential for graphene-based electronics.
Original languageEnglish
JournalAdvanced Functional Materials
Volume24
Pages (from-to)1664–1670
ISSN1616-301X
DOIs
Publication statusPublished - 2014
Externally publishedYes

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