Block copolymer directed synthesis of mesoporous TiO2 for dye-sensitized solar cells

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The morphology of TiO2 plays an important role in the operation of solid-state dye-sensitized solar cells. By using polyisoprene-block-ethyleneoxide (PI-b-PEO) copolymers as structure directing agents for a sol-gel based synthesis of mesoporous TiO2, we demonstrate a strategy for the detailed control of the semiconductor morphology on the 10 nm length scale. The careful adjustment of polymer molecular weight and titania precursor content is used to systematically vary the material structure and its influence upon solar cell performance is investigated. Furthermore, the use of a partially sp(2) hybridized structure directing polymer enables the crystallization of porous TiO2 networks at high temperatures without pore collapse, improving its performance in solid-state dye-sensitized solar cells.
Publisher
ROYAL SOC CHEMISTRY
Issue Date
2009
Language
English
Article Type
Article
Keywords

HOLE TRANSPORT; METAL-OXIDES; FILMS; EFFICIENCY; ELECTRON; POLYMERS; TITANIA

Citation

SOFT MATTER, v.5, no.1, pp.134 - 139

ISSN
1744-683X
DOI
10.1039/b815166k
URI
http://hdl.handle.net/10203/245125
Appears in Collection
CBE-Journal Papers(저널논문)
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