Synthesis of graphene nanoribbons from amyloid templates by gallium vapor-assisted solid-phase graphitization

Journal Article · Mon Jun 16 00:00:00 EDT 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4883716· OSTI ID:22299911

Murakami, Katsuhisa; Dong, Tianchen; Kajiwara, Yuya; Takahashi, Teppei; Fujita, Jun-ichi ^[1]; Hiyama, Takaki; Takai, Eisuke; Ohashi, Gai; Shiraki, Kentaro ^[1]

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1. Institute of Applied Physics, Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573 (Japan)

Single- and double-layer graphene nanoribbons (GNRs) with widths of around 10 nm were synthesized directly onto an insulating substrate by solid-phase graphitization using a gallium vapor catalyst and carbon templates made of amyloid fibrils. Subsequent investigation revealed that the crystallinity, conductivity, and carrier mobility were all improved by increasing the temperature of synthesis. The carrier mobility of the GNR synthesized at 1050 °C was 0.83 cm{sup 2}/V s, which is lower than that of mechanically exfoliated graphene. This is considered to be most likely due to electron scattering by the defects and edges of the GNRs.

• OSTI ID: 22299911
• Journal Information: Applied Physics Letters, Vol. 104, Issue 24; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
CARRIER MOBILITY
CATALYSTS
DEFECTS
ELECTRONS
GALLIUM
GRAPHENE
GRAPHITIZATION
NANOSTRUCTURES
SCATTERING
SOLIDS
SUBSTRATES
SYNTHESIS
TEMPERATURE RANGE 1000-4000 K