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A Hybrid Poly(ethylene oxide)/ Poly(vinylidene fluoride)/TiO 2 Nanoparticle Solid‐State Redox Electrolyte for Dye‐Sensitized Nanocrystalline Solar Cells
Author(s) -
Han H. W.,
Liu W.,
Zhang J.,
Zhao X.Z.
Publication year - 2005
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.200500159
Subject(s) - materials science , nanocrystalline material , electrolyte , dye sensitized solar cell , ethylene oxide , nanoparticle , fluoride , chemical engineering , oxide , quasi solid , solar cell , ionic conductivity , energy conversion efficiency , inorganic chemistry , polymer , electrode , nanotechnology , composite material , chemistry , optoelectronics , copolymer , engineering , metallurgy
High‐efficiency all‐solid‐state dye‐sensitized nanocrystalline solar cells have been fabricated using a poly(ethylene oxide)/poly(vinylidene fluoride) (PEO/PVDF)/TiO 2 ‐nanoparticle polymer redox electrolyte, which yields an overall energy‐conversion efficiency of about 4.8 % under irradiation by white light (65.2 mW cm –2 ). The introduction of PVDF (which contains the highly electronegative element fluorine) and TiO 2 nanoparticles into the PEO electrolyte increases the ionic conductivity (by about two orders of magnitude) and effectively reduces the recombination rate at the interface of the TiO 2 and the solid‐state electrolyte, thus enhancing the performance of the solar cell.