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Graphene oxide for room temperature CO, H2 and UV sensing

ABDELRAHIM ATE1, ZHENAN TANG1,*

Affiliation

  1. School of Electronic Science and Technology, Faculty of Electronic Information and Electrical Engineering, Dalian University of Technology, Dalian 116024, P.R. China

Abstract

Improved Hummers technique employed for the synthesis of graphene oxide, the morphology, structure and composition characterized by (TEM) and (SEM). The device sensor fabricated by dispersing graphene oxide on an interdigitated Au-electrode for both gas and UV sensing. A graphene oxide gas sensor based on CO, H2 and UV photodetector exhibited excellent responsivity, fast response and recovery time. The gas sensor sensitivities were around 17.12% and 22.83% for different gas (CO, H2) concentrations at room temperature; as well the sensor resistance decreased in exposure to CO and H2, revealing p-type semiconducting behaviour of the graphene oxide as excellent materials..

Keywords

Graphene oxide, Gas sensor, UV photodetector.

Citation

ABDELRAHIM ATE, ZHENAN TANG, Graphene oxide for room temperature CO, H2 and UV sensing, Optoelectronics and Advanced Materials - Rapid Communications, 9, 11-12, November-December 2015, pp.1440-1447 (2015).

Submitted at: Sept. 9, 2015

Accepted at: Oct. 28, 2015