Journal
JOURNAL OF NANOPARTICLE RESEARCH
Volume 14, Issue 7, Pages -Publisher
SPRINGER
DOI: 10.1007/s11051-012-0845-1
Keywords
Graft copolymer; Atom transfer radical polymerization; TiO2; Dye-sensitized solar cell; Sol-gel; Energy conversion; Sustainability
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Funding
- National Research Foundation (NRF)
- Korean government (MEST) through the Pioneer Research Center Program [2008-05103]
- Korea Center for Artificial Photosynthesis (KCAP) at Sogang University [NRF-2009-C1AAA001-2009-0093879]
- Ministry of Knowledge Economy (MKE)
- Korea Institute for Advancement in Technology (KIAT) through the Workforce Development Program in Strategic Technology
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A poly(vinyl chloride) (PVC) main chain was grafted with poly(2-(dimethylamino) ethyl methacrylate) (PDMAEMA) containing a quaternary amine group using atom transfer radical polymerization. The successful synthesis of a PVC-g-PDMAEMA graft copolymer was confirmed by Fourier transform infrared, nuclear magnetic resonance, thermogravimetric analysis, and transmission electron microscopy. The PVC-g-PDMAEMA graft copolymer was used as a structure-directing agent (SDA) for the fabrication of a mesoporous thin film containing a titanium dioxide (TiO2) layer. To control the porosity of the resultant inorganic layer, the ratio of SDA to TTIP as well as the concentration of the sol-gel was varied. The structure and porosity of the mesoporous film were characterized by XRD and SEM analysis. The mesoporous TiO2 film fabricated on the FTO surface was used as a photoanode for the dye-sensitized solar cell (DSSC). DSSC performance was the greatest when using TiO2 film with a higher porosity and lower interfacial resistance. The highest energy conversion efficiency reached 3.2 % at 100 mW/cm(2), which was one of the highest reported values for a quasi-solid-state DSSC with 600-nm-thick TiO2 film.
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