An investigation on titanium doping in reduced graphene oxide by RF magnetron sputtering for dye-sensitized solar cells

Foo Wah Low, Chin Wei Lai, Nilofar Asim, Md. Akhtaruzzaman, Mohammad Alghoul, Sieh Kiong Tiong, Nowshad Amin

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

A study investigating the effects of titanium (Ti)atoms sputtered from different sources on substrate distance was attempted in order to effectively dope a reduced graphene oxide (rGO)thin film surface. Factors such as crystallinity, morphology, phase formation, light absorption, and surface chemical state of rGO-TiO2 were investigated. As a result, functional groups or chemical states revealed the presence of Ti-O-C in rGO-TiO2 nanocomposite after the sputtering process. The titanium source from the target was of Ti3+ species as determined using X-ray photoelectron spectroscopy (XPS). It was found that average sized Ti3+ ions of around 59.4 nm were incorporated into the rGO nanosheet. A customized Dye-Sensitized Solar Cells (DSSCs)device was fabricated with the photo-anode consisting of sputtered rGO-TiO2 nanocomposite. After optimization, the Ti target allocated with 10 cm-apart FTO glass-coated rGO nanosheet and 0.67 cm2 active area exhibited an ideal PCE of 6.60%, which is remarkably higher than the usual 5 cm sputtering distance the sample (1.90%)had achieved.

Original languageEnglish
Pages (from-to)10-18
Number of pages9
JournalSolar Energy
Volume188
DOIs
Publication statusPublished - 1 Aug 2019

Fingerprint

Graphite
Titanium
Magnetron sputtering
Oxides
Graphene
Doping (additives)
Nanosheets
Sputtering
Nanocomposites
Light absorption
Functional groups
Oxide films
Dye-sensitized solar cells
Anodes
X ray photoelectron spectroscopy
Ions
Glass
Thin films
Atoms
Substrates

Keywords

  • Doping
  • Dye-sensitized solar cells
  • Reduced graphene oxide
  • RF magnetron sputtering
  • Titanium dioxide

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

Cite this

An investigation on titanium doping in reduced graphene oxide by RF magnetron sputtering for dye-sensitized solar cells. / Low, Foo Wah; Lai, Chin Wei; Asim, Nilofar; Akhtaruzzaman, Md.; Alghoul, Mohammad; Tiong, Sieh Kiong; Amin, Nowshad.

In: Solar Energy, Vol. 188, 01.08.2019, p. 10-18.

Research output: Contribution to journalArticle

Low, Foo Wah ; Lai, Chin Wei ; Asim, Nilofar ; Akhtaruzzaman, Md. ; Alghoul, Mohammad ; Tiong, Sieh Kiong ; Amin, Nowshad. / An investigation on titanium doping in reduced graphene oxide by RF magnetron sputtering for dye-sensitized solar cells. In: Solar Energy. 2019 ; Vol. 188. pp. 10-18.
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