Facile synthesis of high-quality graphene nanoribbons.

By Liying Jiao, Xinran Wang, G. Diankov, Hailiang Wang, Hongjie Dai. Nature Nanotechnology, 2010

744 citations recorded by the source corpus.

Graphene nanoribbons have attracted attention because of their novel electronic and spin transport properties, and also because nanoribbons less than 10 nm wide have a bandgap that can be used to make field-effect transistors. However, producing nanoribbons of very high quality, or in high volumes, remains a challenge. Here, we show that pristine few-layer nanoribbons can be produced by unzipping mildly gas-phase oxidized multiwalled carbon nanotubes using mechanical sonication in an organic solvent. The nanoribbons are of very high quality, with smooth edges (as seen by high-resolution transmission electron microscopy), low ratios of disorder to graphitic Raman bands, and the highest electrical conductance and mobility reported so far (up to 5e(2)/h and 1,500 cm(2) V(-1) s(-1) for ribbons 10-20 nm in width). Furthermore, at low temperatures, the nanoribbons show phase-coherent transport and Fabry-Perot interference, suggesting minimal defects and edge roughness. The yield of nanoribbons is approximately 2% of the starting raw nanotube soot material, significantly higher than previous methods capable of producing high-quality narrow nanoribbons. The relatively high-yield synthesis of pristine graphene nanoribbons will make these materials easily accessible for a wide range of fundamental and practical applications.

Subfields: Electrical and Electronic Engineering, Electronic, Optical and Magnetic Materials, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/a21de4938e2c859111f1b9cbf610a572ca49fcfa

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Citations in the corpus

Fracture of graphene: a review (2015, background): “Jiao et al. (2010) showed that oxidized multiwalled carbon nanotubes under sonication in an organic solvent can be unzipped to form high-quality graphene nanoribbons.”
Synthesis and Fabrication of Graphene and Graphene Oxide: A Review (2019, methodology): “Other studies on graphene synthesis using PECVD were done, such as atmospheric pressure process [92], microwave plasma [93], nitrogen-doped graphene/CNT hybrid structure [94], and many others.”
Graphene Transistors: Status, Prospects, and Problems (2013, methodology): “data (stars) taken from [58], [132], and [137], and simulated data”
Aligned graphene nanoribbons and crossbars from unzipped carbon nanotubes (2010, background): “by unzipping mildly gas-phase oxidized MWNTs sonochemically in an organic solvent [22].”