Journal of the Korean Electrochemical Society (전기화학회지)

The Korean Electrochemical Society (한국전기화학회)
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Preparation of Porous TiO2 Thin Films by Poly(vinyl chloride)-graft-poly(N-vinyl pyrrolidone) and Their Applications to Dye-sensitized Solar Cells

  • Yeon, Seung-Hyeon (Department of Chemical and Biomolecular Engineering, Yonsei University) ;
  • Patel, Rajkumar (Department of Chemical and Biomolecular Engineering, Yonsei University) ;
  • Koh, Jong-Kwan (Department of Chemical and Biomolecular Engineering, Yonsei University) ;
  • Ahn, Sung-Hoon (Department of Chemical and Biomolecular Engineering, Yonsei University) ;
  • Kim, Jong-Hak (Department of Chemical and Biomolecular Engineering, Yonsei University)
  • Received : 2011.03.10
  • Accepted : 2011.04.25
  • Published : 2011.05.31
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Abstract

Mesoporous titanium dioxide ($TiO_2$) thin films were prepared using poly(vinyl chloride)-graft-poly(N-vinyl pyrrolidone) (PVC-g-PVP) as a templating agent via sol-gel process. Grafting of PVC chains from PVC backbone was done by atom transfer radical polymerization (ATRP) technique. The successful grafting of PVP to synthesize PVC-g-PVP was checked by fourier-transform infrared spectroscopy (FT-IR) and gel permeation chromatography (GPC). The carbonyl group interaction of PVC-g-PVP graft copolymer with $TiO_2$ was confirmed by FT-IR. The porous morphologies of the $TiO_2$ films genereated after calcination at $450^{\circ}C$ was characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The mesoporous $TiO_2$ films with 580 nm in thickness were used as a photoelectrode for solid state dye sensitized solar cell (DSSC) and showed an energy conversion efficiency of 1.05% at 100 $mW/cm^2$.

Keywords

References

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