Data di Pubblicazione:
2006
Citazione:
Mesostructured self-assembled titania films for photovoltaic applications / Malfatti, Luca; Falcaro, P; Amenitsch, H; Caramori, S; Argazzi, R; Bignozzi, C. A.; Enzo, Stefano; Maggini, M; Innocenzi, Plinio. - In: MICROPOROUS AND MESOPOROUS MATERIALS. - ISSN 1387-1811. - 88:1-3(2006), pp. 304-311. [10.1016/j.micromeso.2005.09.027]
Abstract:
Mesostructured titania thick films were tested as photovoltaic materials to be used for the fabrication of Graetzel-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 micrometre) 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 micrometre
thick films, treated at 350°C, exhibited an incident photon-to-current efficiency above 40% at lambda = 380 nm.
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 micrometre) 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 micrometre
thick films, treated at 350°C, exhibited an incident photon-to-current efficiency above 40% at lambda = 380 nm.
Tipologia CRIS:
1.1 Articolo in rivista
Elenco autori:
Malfatti, Luca; Falcaro, P; Amenitsch, H; Caramori, S; Argazzi, R; Bignozzi, C. A.; Enzo, Stefano; Maggini, M; Innocenzi, Plinio
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