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Synthesis of Porous $TiO_2$ Thin Films Using PVC-g-PSSA Graft Copolymer and Their Use in Dye-sensitized Solar Cells  

Byun, Su-Jin (Department of Chemical and Biomolecular Engineering, Yonsei University)
Seo, Jin-Ah (Department of Chemical and Biomolecular Engineering, Yonsei University)
Chi, Won-Seok (Department of Chemical and Biomolecular Engineering, Yonsei University)
Shul, Yong-Gun (Department of Chemical and Biomolecular Engineering, Yonsei University)
Kim, Jong-Hak (Department of Chemical and Biomolecular Engineering, Yonsei University)
Publication Information
Membrane Journal / v.21, no.2, 2011 , pp. 193-200 More about this Journal
Abstract
An amphiphilic graft copolymer comprising a poly(vinyl chloride) (PVC) backbone and poly (styrene sulfonic acid) (PSSA) side chains (PVC-g-PSSA) was synthesized via atom transfer radical polymerization (ATRP). Mesoporous titanium dioxide $(TiO_2)$ films with crystalline anatase phase were synthesized via a sol-gel process by templating PVC-g-PSSA graft copolymer. Titanium isopropoxide (TTIP), a $TiO_2$ precursor was selectively incorporated into the hydrophilic PSSA domains of the graft copolymer and grew to form mesoporous $TiO_2$ films, as confirmed by scanning electron microscopy (SEM) and X-ray diffraction (XRD) analysis. The performances of dye-sensitized solar cell (DSSC) were systematically investigated by varying spin coating times and the amounts of P25 nanoparticies. The energy conversion efficiency reached up to 2.7% at 100 mW/$cm^2$ upon using quasi-solid-state polymer electrolyte.
Keywords
dye-sensitized solar cell(DSSC); sol-gel; atom transfer radical polymerization(ATRP); titanium dioxide$(TiO_2)$; graft copolymer;
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