The effect of spin-coated polyethylene glycol on the electrical and optical properties of graphene film

Marjoni Imamora Ali Umar, Chi Chin Yap, Rozidawati Awang, Muhamad Mat Salleh, Muhammad Yahaya

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

This paper reports the modification of electrical and optical properties of graphene film by spin coating polyethylene glycol (PEG) solution onto the graphene oxide film followed by thermal reduction process. The PEG solution was deposited onto the graphene oxide film at different spin coating speeds (1000, 1500, 2000, 2500 and 3000 rpm). The introduction of PEG at appropriate spin coating speed results in lower sheet resistance and optical transmittance, probably due to better alignment and stacking of the graphene sheets. It is interesting to find that the dye sensitized solar cell with PEG-modified graphene film as counter electrode showed 4 times increase in power conversion efficiency as compared to that with unmodified graphene film.

Original languageEnglish
Pages (from-to)883-887
Number of pages5
JournalApplied Surface Science
Volume313
DOIs
Publication statusPublished - 15 Sep 2014

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Graphite
Graphene
Polyethylene glycols
Electric properties
Optical properties
Spin coating
Oxide films
Sheet resistance
Opacity
Conversion efficiency
Electrodes

Keywords

  • Counter electrode
  • Multilayer graphene
  • Optical transmission
  • Sheet resistance
  • Spin coating

ASJC Scopus subject areas

  • Surfaces, Coatings and Films

Cite this

The effect of spin-coated polyethylene glycol on the electrical and optical properties of graphene film. / Ali Umar, Marjoni Imamora; Yap, Chi Chin; Awang, Rozidawati; Mat Salleh, Muhamad; Yahaya, Muhammad.

In: Applied Surface Science, Vol. 313, 15.09.2014, p. 883-887.

Research output: Contribution to journalArticle

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