期刊
IONICS
卷 18, 期 4, 页码 395-402出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s11581-011-0641-4
关键词
Graft copolymer; Atom transfer radical polymerization; Polymer electrolyte; Dye-sensitized solar cell; Sol-gel
资金
- National Research Foundation (NRF)
- Korean government (MEST) [2008-05103]
- Ministry of Knowledge Economy (MKE) through the Human Resources Development of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) [20104010100500]
- MKE
- Korea Institute for Advancement in Technology (KIAT)
- National Research Foundation of Korea [2008-05103] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Poly(N-vinyl caprolactam) (PNVCL) side chains were grafted to a poly(vinyl chloride) (PVC) backbone via atom transfer radical polymerization. The synthesized PVC-g-PNVCL graft copolymer was templated for the preparation of porous TiO2 thin films, which involved a sol-gel reaction and calcination process. The interaction of the carbonyl groups in the PVC-g-PNVCL with the titania was revealed by FT-IR spectroscopy. X-ray diffraction and transmission electron microscopy analysis showed the formation of porous TiO2 thin films with the anatase phase. A series of porous TiO2 thin films with different pore sizes and porosities was prepared by varying the solution compositions and were used as photoelectrodes in dye-sensitized solar cells (DSSC) with a polymer electrolyte. The DSSC performed best when using the TiO2 film with higher porosity, lower interfacial resistance, and longer electron life time. The highest energy conversion efficiency, photovoltage (V (oc)), photocurrent density (J (sc)), and fill factor (FF) were 1.2%, 0.68 V, 3.2 mA/cm(2), and 0.57 at 100 mW/cm(2), respectively, for the quasi-solid state DSSC with a 730-nm-thick TiO2 film.
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