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Prof. David Carey, Surrey: 'Next Generation 2D Materials beyond Graphene'

Image: David Carey
David Carey

Date: 12 October 2016   Time: 15:00 - 16:00

Abstract:
The study of two dimensional van der Waals materials is at the forefront of current functional materials science and condensed matter physics. Graphene is the most well-known and developed of these materials with a key technology issue for practical exploitation being the production of large area electronic grade doped material. In this talk I will review some of our work in the large area production of graphene and discuss some of the factors that control the doping and dc and high frequency conductivity of graphene. Beyond single layer graphene, layer stacking plays an important role in the properties of bilayer graphene and I will show how it is possible to introduce an electronic bandgap into AB stacked bilayer graphene. Elemental layered materials are not just confined to carbon based materials; I will also review some of the research on materials such as silicene (single layer silicon), germanene, stanene and phosphorene. In particular I will show how the structural and electronic properties of these materials share some similarities to graphene but the weaker ? bonding results in atomic buckling of the single and bilayer layers. The potential for electronic devices with reduced phonon scattering and high mobility with these materials will also be discussed.

Location:  People's Palace PP1
Contact:  MRI Academic Fellows
Telephone:  020 7882 5582