Nano Archive

Aligned graphene nanoribbons and crossbars from unzipped carbon nanotubes

Jiao, Liying and Zhang, Li and Ding, Lei and Liu, Jie and Dai, Hongjie (2010) Aligned graphene nanoribbons and crossbars from unzipped carbon nanotubes. Nano Research, 3 (6). pp. 387-394.

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Official URL: http://cat.inist.fr/?aModele=afficheN&cpsidt=22778...

Abstract

Aligned graphene nanoribbon (GNR) arrays have been made by unzipping of aligned single-walled and few-walled carbon nanotube (CNT) arrays. Nanotube unzipping was achieved by a polymer-protected Ar plasma etching method, and the resulting nanoribbon array can be transferred onto any chosen substrate. Atomic force microscope (AFM) imaging and Raman mapping on the same CNTs before and after unzipping confirmed that ~80% of CNTs were opened up to form single layer sub-10 nm GNRs. Electrical devices made from the GNRs (after annealing in H2 at high temperature) showed on/off current (Ion/Ioff) ratios up to 103 at room temperature, suggesting the semiconducting nature of the narrow GNRs. Novel GNR–GNR and GNR–CNT crossbars were fabricated by transferring GNR arrays across GNR and CNT arrays, respectively. The production of such ordered graphene nanoribbon architectures may allow for large scale integration of GNRs into nanoelectronics or optoelectronics.

Item Type:Article
Subjects:Physical Science > Nanophysics
Physical Science > Nano objects
Material Science > Nanochemistry
Material Science > Nanostructured materials
Divisions:Faculty of Engineering, Science and Mathematics > School of Physics
Faculty of Engineering, Science and Mathematics > School of Chemistry
ID Code:9357
Deposited By:JNCASR
Deposited On:04 Oct 2010 12:10
Last Modified:04 Oct 2010 12:10

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