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.

DOI: https://doi.org/10.1103/PhysRevB.84.155438

Abstract

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.

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About

• Item ORO ID
• 30275
• Item Type
• Journal Item
• ISSN
• 1550-235X
• Project Funding Details

• Funded Project Name	Project ID	Funding Body
  Substrate and polaronic band engineering for advanced graphene electronics	EP/H015655/1	EPSRC (Engineering and Physical Sciences Research Council)

• Academic Unit or School
• Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
  Faculty of Science, Technology, Engineering and Mathematics (STEM)
• Research Group
• Physics
• Copyright Holders
• © 2011 American Physical Society
• Depositing User
• James Hague