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2020 | OriginalPaper | Chapter

79. Deposition of Porous Photocatalytic TiO2 Film for Dye-Sensitized Solar Cells by Low-Powered Atmospheric Plasma Spray Equipment

Authors : Alabi Kelvin Oluwafunmilade, Zine Abidine, Yasutaka Ando, Yoshimasa Noda, Mitsumasa Iino

Published in: Renewable Energy and Sustainable Buildings

Publisher: Springer International Publishing

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Abstract

Oxide films have been used for corrosion resistance, abrasion resistance and thermal barrier coatings of bridges, semiconductor manufacturing equipment, engines and so on. Besides they start to be utilized as functional film such as photovoltaic device, solid electrolyte and gas sensor. However, because of its excellent chemical stability, alumina film has been practically used. Recently, because of its excellent photocatalytic properties, TiO2 film was successfully applied to antimicrobial coating and photovoltaic device for dye-sensitized solar cell (DSSC).
Authors have been developing electric power generating systems using renewable energy devices such as small-scale hydro and DSSC (Ando et al., Vacuum 80:1278–1283, 2006). For lifetime elongation of the small-scale hydro and low-cost DSSC manufacturing in this area, development of alumina film and TiO2 film deposition process using atmospheric plasma spray (APS) is thought to be effective. However, since solid materials such as powder and wires are used as feedstock in the case of thermal spray, the flame should have enough thermal energy to melt the feedstock during flight (Ando et al., Front Appl Plasma Technol 7:75–80, 2014).
Therefore, high-power (over 30 kW class) APS equipment has been thought to be demanded so far. In our previous study, in order to achieve a low-cost APS system, we developed a 1 kW class APS equipment; it is very difficult for small company to introduce APS equipment because of its high initial cost.
The purpose of this study is to create TiO2 film which is suitable for DSSC. In this study, to develop a deposition process for oxide film with practical strength, 1 kW class APS equipment was carried out. To increase the power conversion efficiency of DSSC, a porous titanium dioxide with a wide band gap is typically used; the large surface area of the TiO2 ensures the absorption of sufficiently large number of dye molecules for efficient harvesting of radiant energy. Surface morphologies of the TiO2/NaCl film was evaluated using optical micrographs.
Consequently, it was confirmed that the photocatalytic porous TiO2 film could be deposited and its conversion efficiency was high in comparison with the film deposited with our conventional dense TiO2 film without addition and removal of NaCl particles. Additionally, it was confirmed that conversion efficiency of the DSSC using the porous TiO2 film was high in comparison with our previous study using dense TiO2 film.

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Literature
1.
go back to reference Zhao Z et al (2015) Dye-sensitized solar cells based on hierarchically structured porous TiO2 filled with nanoparticles. J Mater Chem A 3:11320–11329CrossRef Zhao Z et al (2015) Dye-sensitized solar cells based on hierarchically structured porous TiO2 filled with nanoparticles. J Mater Chem A 3:11320–11329CrossRef
2.
go back to reference Ando Y, Noda Y, Kobayashi A (2014) Al2O3 film deposition by atmospheric thermal plasma spray using 1 kW class electric power source. Front Appl Plasma Technol 7(2):75–80 Ando Y, Noda Y, Kobayashi A (2014) Al2O3 film deposition by atmospheric thermal plasma spray using 1 kW class electric power source. Front Appl Plasma Technol 7(2):75–80
Metadata
Title
Deposition of Porous Photocatalytic TiO2 Film for Dye-Sensitized Solar Cells by Low-Powered Atmospheric Plasma Spray Equipment
Authors
Alabi Kelvin Oluwafunmilade
Zine Abidine
Yasutaka Ando
Yoshimasa Noda
Mitsumasa Iino
Copyright Year
2020
DOI
https://doi.org/10.1007/978-3-030-18488-9_79