Effect of thermal reduction temperature on the optical and electrical properties of multilayer graphene

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4 Citations (Scopus)

Abstract

Multilayer graphene was prepared by thermal reduction of graphene oxide film at various temperatures (200, 400 and 500 °C) in argon atmosphere for an hour. The graphite oxide was first synthesized by using modified Hummers method and spin coated on quartz substrate to form graphene oxide film. X-ray diffraction, field emission scanning electron microscopy, UV–Vis spectroscopy and four point probe measurement were used to characterize the resultant multilayer graphene. The transmittance and sheet resistance decreased with the thermal reduction temperature. The lowest sheet resistance of 91.6 ± 0.3 kΩ/sq was obtained at temperature of 500 °C, showing almost 100 times improvement compared to that prepared at 200 °C.

Original languageEnglish
Pages (from-to)1-4
Number of pages4
JournalJournal of Materials Science: Materials in Electronics
DOIs
Publication statusAccepted/In press - 29 Aug 2016

Fingerprint

Graphite
Graphene
graphene
Multilayers
Electric properties
Optical properties
Hot Temperature
electrical properties
optical properties
Temperature
Sheet resistance
Oxides
Oxide films
oxide films
temperature
Quartz
Field emission
Argon
field emission
transmittance

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biophysics
  • Bioengineering
  • Biomaterials
  • Atomic and Molecular Physics, and Optics
  • Biomedical Engineering
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

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AU - Ali Umar, Marjoni Imamora

AU - Yap, Chi Chin

AU - Awang, Rozidawati

AU - Mat Salleh, Muhamad

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AB - Multilayer graphene was prepared by thermal reduction of graphene oxide film at various temperatures (200, 400 and 500 °C) in argon atmosphere for an hour. The graphite oxide was first synthesized by using modified Hummers method and spin coated on quartz substrate to form graphene oxide film. X-ray diffraction, field emission scanning electron microscopy, UV–Vis spectroscopy and four point probe measurement were used to characterize the resultant multilayer graphene. The transmittance and sheet resistance decreased with the thermal reduction temperature. The lowest sheet resistance of 91.6 ± 0.3 kΩ/sq was obtained at temperature of 500 °C, showing almost 100 times improvement compared to that prepared at 200 °C.

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