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Mesostructured self-assembled titania films for photovoltaic applications

Malfatti, Luca and Falcaro, Paolo and Amenitsch, Heinz and Caramori, Stefano and Argazzi, Roberto and Bignozzi, Carlo Alberto and Enzo, Stefano and Maggini, Michele and Innocenzi, Plinio (2006) Mesostructured self-assembled titania films for photovoltaic applications. Microporous and Mesoporous Materials, Vol. 88 (1-3), p. 304-311. ISSN 1387-1811. Article.

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DOI: 10.1016/j.micromeso.2005.09.027


Mesostructured titania thick films were tested as photovoltaic materials to be used for the fabrication of Grätzel-type dye-sensitized solar cells. The titania films, prepared by evaporation-induced self-assembly, showed a 3D orthorhombic porous mesostructure obtained using non-ionic tri-block copolymers as templating agents and controlled conditions of processing. Thick films (up to 1 μm) were synthesized via repetitive dip-coating. Grazing incidence small angle X-ray scattering and X-ray diffraction analysis showed that, after calcination at temperatures higher than 350 °C, anatase crystallites were formed in the titania pore walls without loss of organization. The block copolymers were removed after thermal calcination at 350 °C, as shown by infrared spectroscopy. Photoaction spectra of 1 μm thick films, treated at 350 °C, exhibited an incident photon-to-current efficiency above 40% at λ = 380 nm

Item Type:Article
ID Code:1266
Uncontrolled Keywords:Self-assembly, titania, solar cells, films
Subjects:Area 03 - Scienze chimiche > CHIM/02 Chimica fisica
Area 09 - Ingegneria industriale e dell'informazione > ING-IND/22 Scienza e tecnologia dei materiali
Divisions:001 Università di Sassari > 01 Dipartimenti > Chimica
001 Università di Sassari > 01 Dipartimenti > Architettura e pianificazione
Additional Information:Pubblicato online il 16 novembre 2005.
Deposited On:18 Aug 2009 10:04

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