Title
Investigation of graphene-metal contacts in Hall sensors based on QFS graphene
Authors
[ 1 ] Instytut Fizyki, Wydział Inżynierii Materiałowej i Fizyki Technicznej, Politechnika Poznańska | [ P ] employee
Scientific discipline (Law 2.0)
Year of publication
2025
Published in
Article type
scientific article
Publication language
english
Keywords
EN
- Graphene-metal contacts
- Hall sensor
- QFS graphene
- SiC
Abstract
EN This article presents a study of the current-voltage characteristics of metal–graphene contacts in Hall sensors based on quasi-free-standing graphene (QFS graphene) grown on 4H-SiC with hydrogen intercalation. Various graphene-based Hall sensor designs are reviewed. The study focuses on the linearity of the I–V characteristics in the contact regions. Sensors with titanium–gold contacts and Al2O3 passivation were fabricated. Results show highly ohmic behavior and strong agreement with a linear model, indicating high contact quality. The findings highlight the potential of QFS-graphene Hall sensors for high-sensitivity, stable applications and form a basis for future studies.
Date of online publication
06.08.2025
Pages (from - to)
1 - 9
Ministry points / journal
40
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