Grants and Contracts Details
Description
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.
Status | Finished |
---|---|
Effective start/end date | 7/31/12 → 12/31/17 |
Funding
- Office of Naval Research: $300,000.00
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