Fabrication of porous TiO2 films using a spongy replica prepared by layer-by-layer self-assembly method: Application to dye-sensitized solar cells

Yosuke Tsuge; Kohei Inokuchi; Katsuhiro Onozuka; Ohno Shingo; Shinichiro Sugi; Masato Yoshikawa; Seimei Shiratori

doi:10.1016/j.tsf.2005.07.013

Fabrication of porous TiO₂ films using a spongy replica prepared by layer-by-layer self-assembly method: Application to dye-sensitized solar cells

Yosuke Tsuge
, Kohei Inokuchi
, Katsuhiro Onozuka
, Ohno Shingo
, Shinichiro Sugi
, Masato Yoshikawa
, Seimei Shiratori

Research output: Contribution to journal › Conference article › peer-review

24 Citations (Scopus)

Abstract

In this study, we report the fabrication of the anatase TiO₂ films with high porosity using a new spongy replica which prepared by layer-by-layer self-assembly technique. The scanning electron microscope photographs revealed that the spongy replica has an extremely porous microstructure and high surface area. Moreover, this porous replica was easily fabricated from a very flat film through the action with silver acetate solution. This method facilitated the porous TiO₂ films with a high surface area. Additionally, by this method, a necking between the TiO ₂ films was strong and the amount of loaded dye was increased, so that the increase of forward electron transfer between the TiO₂ films on the surface and the TiO₂ films on the substrate. By using the fabricated porous TiO₂ films as the photoelectrode for dye-sensitized solar cell, the improvement of the photocurrent-voltage characteristic was achieved, resulting in an energy conversion efficiency of Eff = 2.66% with the thickness of approximately 5 μm.

Original language	English
Pages (from-to)	396-401
Number of pages	6
Journal	Thin Solid Films
Volume	499
Issue number	1-2
DOIs	https://doi.org/10.1016/j.tsf.2005.07.013
Publication status	Published - 2006 Mar 21
Externally published	Yes
Event	Proceedings of the Sixth International Conference on Nano-Molecular Electronics (ICNME 2004) - Duration: 2004 Dec 15 → 2004 Dec 17

Keywords

Dye-sensitized solar cell
Layer-by-layer (LBL) self-assembly
Spongy replica
TiO

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Surfaces and Interfaces
Surfaces, Coatings and Films
Metals and Alloys
Materials Chemistry

Access to Document

10.1016/j.tsf.2005.07.013

Cite this

@article{e156ad2a892049af80d0afdfe5d9ab79,

title = "Fabrication of porous TiO2 films using a spongy replica prepared by layer-by-layer self-assembly method: Application to dye-sensitized solar cells",

abstract = "In this study, we report the fabrication of the anatase TiO2 films with high porosity using a new spongy replica which prepared by layer-by-layer self-assembly technique. The scanning electron microscope photographs revealed that the spongy replica has an extremely porous microstructure and high surface area. Moreover, this porous replica was easily fabricated from a very flat film through the action with silver acetate solution. This method facilitated the porous TiO2 films with a high surface area. Additionally, by this method, a necking between the TiO 2 films was strong and the amount of loaded dye was increased, so that the increase of forward electron transfer between the TiO2 films on the surface and the TiO2 films on the substrate. By using the fabricated porous TiO2 films as the photoelectrode for dye-sensitized solar cell, the improvement of the photocurrent-voltage characteristic was achieved, resulting in an energy conversion efficiency of Eff = 2.66\% with the thickness of approximately 5 μm.",

keywords = "Dye-sensitized solar cell, Layer-by-layer (LBL) self-assembly, Spongy replica, TiO",

author = "Yosuke Tsuge and Kohei Inokuchi and Katsuhiro Onozuka and Ohno Shingo and Shinichiro Sugi and Masato Yoshikawa and Seimei Shiratori",

note = "Funding Information: This work was partly supported by KEIO Life Conjugated Chemistry (LCC) Programme of the Centre of Excellence (COE) Research Project in the 21st century sponsored by Japanese Ministry of Education, Science, Culture, and Sports. This work was made use of shared experimental facilities at the Kimura laboratory of Keio University. The authors acknowledge K. Kakiuchi (Kimura laboratory) for partial support of this work.; Proceedings of the Sixth International Conference on Nano-Molecular Electronics (ICNME 2004) ; Conference date: 15-12-2004 Through 17-12-2004",

year = "2006",

month = mar,

day = "21",

doi = "10.1016/j.tsf.2005.07.013",

language = "English",

volume = "499",

pages = "396--401",

journal = "Thin Solid Films",

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publisher = "Elsevier B.V.",

number = "1-2",

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TY - JOUR

T1 - Fabrication of porous TiO2 films using a spongy replica prepared by layer-by-layer self-assembly method

T2 - Proceedings of the Sixth International Conference on Nano-Molecular Electronics (ICNME 2004)

AU - Tsuge, Yosuke

AU - Inokuchi, Kohei

AU - Onozuka, Katsuhiro

AU - Shingo, Ohno

AU - Sugi, Shinichiro

AU - Yoshikawa, Masato

AU - Shiratori, Seimei

N1 - Funding Information: This work was partly supported by KEIO Life Conjugated Chemistry (LCC) Programme of the Centre of Excellence (COE) Research Project in the 21st century sponsored by Japanese Ministry of Education, Science, Culture, and Sports. This work was made use of shared experimental facilities at the Kimura laboratory of Keio University. The authors acknowledge K. Kakiuchi (Kimura laboratory) for partial support of this work.

PY - 2006/3/21

Y1 - 2006/3/21

N2 - In this study, we report the fabrication of the anatase TiO2 films with high porosity using a new spongy replica which prepared by layer-by-layer self-assembly technique. The scanning electron microscope photographs revealed that the spongy replica has an extremely porous microstructure and high surface area. Moreover, this porous replica was easily fabricated from a very flat film through the action with silver acetate solution. This method facilitated the porous TiO2 films with a high surface area. Additionally, by this method, a necking between the TiO 2 films was strong and the amount of loaded dye was increased, so that the increase of forward electron transfer between the TiO2 films on the surface and the TiO2 films on the substrate. By using the fabricated porous TiO2 films as the photoelectrode for dye-sensitized solar cell, the improvement of the photocurrent-voltage characteristic was achieved, resulting in an energy conversion efficiency of Eff = 2.66% with the thickness of approximately 5 μm.

AB - In this study, we report the fabrication of the anatase TiO2 films with high porosity using a new spongy replica which prepared by layer-by-layer self-assembly technique. The scanning electron microscope photographs revealed that the spongy replica has an extremely porous microstructure and high surface area. Moreover, this porous replica was easily fabricated from a very flat film through the action with silver acetate solution. This method facilitated the porous TiO2 films with a high surface area. Additionally, by this method, a necking between the TiO 2 films was strong and the amount of loaded dye was increased, so that the increase of forward electron transfer between the TiO2 films on the surface and the TiO2 films on the substrate. By using the fabricated porous TiO2 films as the photoelectrode for dye-sensitized solar cell, the improvement of the photocurrent-voltage characteristic was achieved, resulting in an energy conversion efficiency of Eff = 2.66% with the thickness of approximately 5 μm.

KW - Dye-sensitized solar cell

KW - Layer-by-layer (LBL) self-assembly

KW - Spongy replica

KW - TiO

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DO - 10.1016/j.tsf.2005.07.013

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Y2 - 15 December 2004 through 17 December 2004

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