• 文献标题:   Gate-tunable Hall sensors on large area CVD graphene protected by h-BN with 1D edge contacts
  • 文献类型:   Article
  • 作  者:   KARPIAK B, DANKERT AE, DASH SP
  • 作者关键词:  
  • 出版物名称:   JOURNAL OF APPLIED PHYSICS
  • ISSN:   0021-8979 EI 1089-7550
  • 通讯作者地址:   Chalmers Univ Technol
  • 被引频次:   5
  • DOI:   10.1063/1.4997463
  • 出版年:   2017

▎ 摘  要

Graphene is an excellent material for Hall sensors due to its atomically thin structure, high carrier mobility, and low carrier density. However, graphene devices need to be protected from the environment for reliable and durable performance in different environmental conditions. Here we present magnetic Hall sensors fabricated on large area commercially available chemical vapor deposited (CVD) graphene protected by exfoliated hexagonal boron nitride (h-BN). To connect the graphene active regions of Hall samples to the outputs, 1D edge contacts were utilized which show reliable and stable electrical properties. The operation of the Hall sensors shows the current-related sensitivity up to 345 V/(AT). By changing the carrier concentration and type in graphene by the application of gate voltage, we are able to tune the Hall sensitivity. Published by AIP Publishing.