Structural parameters controlling the performance of organized mesoporous TiO2 films in dye sensitized solar cells

0315224 - ÚFCH JH 2009 RIV NL eng J - Článek v odborném periodiku
Zukalová, Markéta - Procházka, Jan - Zukal, Arnošt - Yum, J. H. - Kavan, Ladislav
Structural parameters controlling the performance of organized mesoporous TiO2 films in dye sensitized solar cells.
[Strukturní parametry řídící fungování uspořádaných mezoporézních filmů oxidu titaničitého v barvivem senzibilizovaných solárních článcích.]
Inorganica chimica acta. Roč. 361, č. 3 (2008), s. 656-662. ISSN 0020-1693. E-ISSN 1873-3255
Grant CEP: GA AV ČR KAN100500652
Výzkumný záměr: CEZ:AV0Z40400503
Klíčová slova: dye sensitized solar cells * titanium dioxide
Kód oboru RIV: CF - Fyzikální chemie a teoretická chemie
Impakt faktor: 1.940, rok: 2008

Titanium dioxide films with organized mesoporous structure were investigated as photoanodes in dye sensitized solar cells. High-quality films were grown on FTO supports by implementing the protocol of supramolecular templating with an amphiphilic triblock copolymer, Pluronic P123. Thicker films were obtained by repeated dip-coating and calcination cycles of up to 10 layers. The TiO2 films were crack-free, optically transparent, and had thicknesses exceeding 2 mu m, while still preserving the organized mesoporous morphology. Their roughness factors, determined from Kr-adsorption isotherms, exceeded 500. The sorption of N-3 and N-719 dyes was fitted to a surface coverage of 0.31 molecules/nm(2), which is about one third of the ideal dye loading assumed for the ( 101) anatase face. The solar performance of multilayer films sensitized with N-945 dye scaled linearly for 1-3 layer films, but approached a plateau for thicker films.

Filmy oxidu titaničitého byly testovány z hlediska jejich použití jako fotoanod do barvivem senzibilizovaných solárních článků.
Trvalý link: http://hdl.handle.net/11104/0165486