Synthesis of a hierarchically meso-macroporous TiO2 film based on UV light-induced in situ polymerization: Application to dye-sensitized solar cells
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Hierarchically meso-macroporous TiO2 films were prepared via a UV light-induced in situ polymerization of hybrid organic–inorganic films containing propoxylated glyceryltriacrylate monomers and titania precursors. These films were composed of well-connected, net-like frameworks with a large open cavity (0.2–1.5 μm), which were assembled by titania nanocrystals with a size of ∼25 nm and that possessed relatively rich inner crystal mesopores of about 4 nm. The particular net-like frameworks make the film a promising candidate for use as the scattering layer in dye-sensitized solar cells (DSSCs). A bilayer structured photo-electrode, consisting of the net-like framework layer on top of the P25 film, was prepared and exhibited good overall conversion efficiency. Interestingly, the photovoltaic conversion efficiency (η) was improved to 6.95%, much higher than that of P25 single-layer film (6.17%).
© 2014 Royal Society of Chemistry. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal website for access to the definitive, published version.
Macromolecular and Materials Chemistry not elsewhere classified