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CVD-Grown Graphene Solution-gated Field Effect Transistors for pH Sensing

  • Benjamin Mailly Giacchetti (a1) (a2), Allen Hsu (a1), Han Wang (a1), Ki Kang Kim (a1), Jing Kong (a1) and Tomas Palacios (a1)...

Abstract

This paper presents the fabrication technology and initial characterization of electrolyte-gated field effect transistor (FET) arrays based on CVD grown graphene on copper. We show that the graphene FET (GFET), when immersed in electrolytes, exhibit a transconductance around 5 mS/mm. From preliminary pH sensing experiments, a pH sensitivity of 24 mV/pH has been demonstrated.

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