Mesostructured self-assembled titania films for photovoltaic applications

Luca Malfatti; Paolo Falcaro; Heinz Amenitsch; Stefano Caramori; Roberto Argazzi; Carlo Alberto Bignozzi; Stefano Enzo; Michele Maggini; Plinio Innocenzi

doi:10.1016/j.micromeso.2005.09.027

Mesostructured self-assembled titania films for photovoltaic applications

Luca Malfatti, Paolo Falcaro, Heinz Amenitsch, Stefano Caramori, Roberto Argazzi, Carlo Alberto Bignozzi, Stefano Enzo, Michele Maggini, Plinio Innocenzi^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

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.

Original language	English
Pages (from-to)	304-311
Number of pages	8
Journal	Microporous and Mesoporous Materials
Volume	88
Issue number	1-3
DOIs	https://doi.org/10.1016/j.micromeso.2005.09.027
Publication status	Published - 21 Jan 2006
Externally published	Yes

Keywords

Films
Self-assembly
Solar cells
Titania

ASJC Scopus subject areas

Catalysis
Materials Science(all)

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.micromeso.2005.09.027

Cite this

@article{6e0a1ebd3cd642cc82a6718c6a6fdea8,

title = "Mesostructured self-assembled titania films for photovoltaic applications",

abstract = "Mesostructured titania thick films were tested as photovoltaic materials to be used for the fabrication of Gr{\"a}tzel-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.",

keywords = "Films, Self-assembly, Solar cells, Titania",

author = "Luca Malfatti and Paolo Falcaro and Heinz Amenitsch and Stefano Caramori and Roberto Argazzi and Bignozzi, {Carlo Alberto} and Stefano Enzo and Michele Maggini and Plinio Innocenzi",

year = "2006",

month = jan,

day = "21",

doi = "10.1016/j.micromeso.2005.09.027",

language = "English",

volume = "88",

pages = "304--311",

journal = "Microporous and Mesoporous Materials ",

issn = "1387-1811",

publisher = "Elsevier B.V.",

number = "1-3",

}

TY - JOUR

T1 - Mesostructured self-assembled titania films for photovoltaic applications

AU - Malfatti, Luca

AU - Falcaro, Paolo

AU - Amenitsch, Heinz

AU - Caramori, Stefano

AU - Argazzi, Roberto

AU - Bignozzi, Carlo Alberto

AU - Enzo, Stefano

AU - Maggini, Michele

AU - Innocenzi, Plinio

PY - 2006/1/21

Y1 - 2006/1/21

N2 - 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.

AB - 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.

KW - Films

KW - Self-assembly

KW - Solar cells

KW - Titania

UR - http://www.scopus.com/inward/record.url?scp=29244462815&partnerID=8YFLogxK

U2 - 10.1016/j.micromeso.2005.09.027

DO - 10.1016/j.micromeso.2005.09.027

M3 - Article

AN - SCOPUS:29244462815

SN - 1387-1811

VL - 88

SP - 304

EP - 311

JO - Microporous and Mesoporous Materials

JF - Microporous and Mesoporous Materials

IS - 1-3

ER -

Mesostructured self-assembled titania films for photovoltaic applications

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

Access to Document

Other files and links

Cite this