Highly Sensitive Hall Sensors Based on Chemical Vapor Deposition Graphene.

ABSTRACT: In this work, we demonstrate highly sensitive and scalable Hall sensors fabricated by adopting arrays of monolayer single-crystal chemical vapor deposition (CVD) graphene. The devices are based on graphene Hall bars with a carrier mobility of >12000 cm² V^-1 s^-1 and a low residual carrier density of ∼1 × 10¹¹ cm^-2, showing Hall sensitivity higher than 5000 V A^-1 T^-1, which is a value previously only achieved when using exfoliated graphene encapsulated with flakes of hexagonal boron nitride. We also implement a facile and scalable polymeric encapsulation, allowing the performance of graphene Hall bars to be stabilized when measured in an ambient environment. We demonstrate that this capping method can reduce the deg

SUBMITTER: Tyagi A 

PROVIDER: S-EPMC11348313 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature