CUED Publications database

Adsorptive graphene doping: Effect of a polymer contaminant

Arter, WE and D'Arsié, L and Wu, X and Esconjauregui, S and Robertson, J (2017) Adsorptive graphene doping: Effect of a polymer contaminant. Applied Physics Letters, 110. ISSN 0003-6951

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© 2017 Author(s). Transfer-induced contamination of graphene and the limited stability of adsorptive dopants are two of the main issues faced in the practical realization of graphene-based electronics. Herein, we assess the stability of HNO3, MoO3, and AuCl3 dopants upon transferred graphene with different extents of polymer contamination. Sheet resistivity measurements prove that polymer residues induce a significantly degenerative effect in terms of doping stability for HNO3 and MoO3 and a highly stabilizing effect for AuCl3. Further characterization by Raman spectroscopy and atomic force microscopy (AFM) provides insight into the stability mechanism. Together, these findings demonstrate the relevance of contamination in the field of adsorptive doping for the realization of graphene-based functional devices.

Item Type: Article
Divisions: Div B > Solid State Electronics and Nanoscale Science
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 19:32
Last Modified: 13 Apr 2021 07:11
DOI: 10.1063/1.4984283