Functionalised hexagonal-domain graphene for position-sensitive photodetectors

De Sanctis, Adolfo; Barnes, Matthew D.; Amit, Iddo; Craciun, Monica F.; Russo, Saverio

doi:10.1088/1361-6528/aa5ec0

Functionalised hexagonal-domain graphene for position-sensitive photodetectors

De Sanctis, Adolfo; Barnes, Matthew D.; Amit, Iddo; Craciun, Monica F.; Russo, Saverio

Authors

Adolfo De Sanctis

Matthew D. Barnes

Dr Iddo Amit iddo.amit@durham.ac.uk
Assistant Professor

Monica F. Craciun

Saverio Russo

Abstract

Graphene's unique photoresponse has been largely used in a multitude of optoelectronics applications ranging from broadband photodetectors to wave-guide modulators. In this work we extend the range of applications to position-sensitive photodetectors (PSDs) using FeCl3-intercalated hexagonal domains of graphene grown by atmospheric pressure chemical vapour deposition (APCVD). The FeCl3-based chemical functionalisation of APCVD graphene crystals is affected by the presence of wrinkles and results in a non-uniform doping of the graphene layers. This doping profile creates multiple p–p+ photoactive junctions which show a linear and bipolar photoresponse with respect to the position of a focused light spot, which is ideal for the realization of a PSD. Our study paves the way towards the fabrication of flexible and transparent PSDs that could be embedded in smart textile and wearable electronics.

Citation

De Sanctis, A., Barnes, M. D., Amit, I., Craciun, M. F., & Russo, S. (2017). Functionalised hexagonal-domain graphene for position-sensitive photodetectors. Nanotechnology, 28(12), Article 124004. https://doi.org/10.1088/1361-6528/aa5ec0

Journal Article Type	Article
Acceptance Date	Feb 7, 2017
Online Publication Date	Feb 24, 2017
Publication Date	Feb 24, 2017
Deposit Date	Jul 5, 2018
Publicly Available Date	Jul 6, 2018
Journal	Nanotechnology
Print ISSN	0957-4484
Electronic ISSN	1361-6528
Publisher	IOP Publishing
Peer Reviewed	Peer Reviewed
Volume	28
Issue	12
Article Number	124004
DOI	https://doi.org/10.1088/1361-6528/aa5ec0

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