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Tunable graphene band gaps from superstrate-mediated interactions

Hague, J. P. (2011). Tunable graphene band gaps from superstrate-mediated interactions. Physical Review B, 84(15) p. 155438.

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A theory is presented for the strong enhancement of graphene-on-substrate band gaps by attractive interactions mediated through phonons in a polarizable superstrate. It is demonstrated that gaps of up to 1 eV can be formed for experimentally achievable values of electron-phonon coupling and phonon frequency. Gap enhancements range between factors of 1 to 4, indicating possible benefits to graphene electronics through greater band-gap control for digital applications, lasers, light-emitting diodes, and photovoltaics through the relatively simple application of polarizable materials such as SiO2 and Si3N4.

Item Type: Journal Item
Copyright Holders: 2011 American Physical Society
ISSN: 1550-235X
Project Funding Details:
Funded Project NameProject IDFunding Body
Substrate and polaronic band engineering for advanced graphene electronicsEP/H015655/1EPSRC (Engineering and Physical Sciences Research Council)
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Research Group: Physics
Item ID: 30275
Depositing User: James Hague
Date Deposited: 01 Dec 2011 16:33
Last Modified: 07 Dec 2018 09:57
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