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Proceedings Paper

Role of defect states in functionalized graphene photodetectors
Author(s): Jake D. Mehew; Matthew D. Barnes; Marc Dubois; Monica F. Craciun; Saverio Russo
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Paper Abstract

The functionalization of graphene can enhance the optoelectronic properties of graphene, allowing the creation of highly sensitive broadband photodetectors. Presently, the role played by defects, induced by the functionalization of graphene, on the performance of graphene photodetectors is not well understood. Here, we investigate the optoelectronic properties of van der Waals heterostructures comprising of graphene and a functionalized partner, formed by pristine and fluorinated graphene. We find that the electrical properties of graphene are preserved upon formation of the heterostructure. A negligible charge transfer is observed across the interface between the two materials which limits the performance of the photodetector due to the vertical separation of the two materials.

Paper Details

Date Published: 24 August 2017
PDF: 7 pages
Proc. SPIE 10345, Active Photonic Platforms IX, 103450V (24 August 2017); doi: 10.1117/12.2273987
Show Author Affiliations
Jake D. Mehew, Univ. of Exeter (United Kingdom)
Matthew D. Barnes, Univ. of Exeter (United Kingdom)
Marc Dubois, Univ. Clermont Auvergne (France)
Monica F. Craciun, Univ. of Exeter (United Kingdom)
Saverio Russo, Univ. of Exeter (United Kingdom)

Published in SPIE Proceedings Vol. 10345:
Active Photonic Platforms IX
Ganapathi S. Subramania; Stavroula Foteinopoulou, Editor(s)

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