Graphene Nanoribbons By Design

Grants and Contracts Details


Graphene is an enticing new material for high-performance thinfilm electronics, and graphene nanoribbons in particular have yielded transistors with impressive (200 cm2 / Vs) mobility, leading to very high current output for the device.1 These properties allowed the fabrication of carbon-based switches and amplifiers with unprecedented performance.2 Unfortunately, current preparations of graphene rely on “top-down” approaches, such as lithographic cutting or simple exfoliation of films of graphite. Materials produced in this fashion have a degree of randomness in their structures, which can have dramatic impact on the electronic properties of the graphene nanoribbon (GNR) due to the dependence of electronic properties on ribbon width and edge orientation. For example, many widths of the zigzag (acenelike) edged GNRs are predicted to be metallic, while the narrower armchair (rylene) edged GNRs are should be semiconducting.3 It has proven difficult to confirm these hypotheses due to the difficulty in preparing GNRs with appropriately controlled width and edge orientations.
Effective start/end date7/31/126/30/16


  • Office of Naval Research: $450,000.00


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