Porous TiO2 layer for dye-sensitized solar cell formed with non-equilibrium 2D plasma induced by dielectric barrier discharge under atmospheric pressure

A non-equilibrium 2D plasma was induced on the insulating plate by a dielectric barrier discharge under a flowing mixture of nitrogen and oxygen gases. A titanium-peroxo precursor to prepare an anatase TiO2 film was irradiated with the plasma. The technique was applied to form a porous TiO2 layer fo...

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Bibliographic Details
Published in:Japanese Journal of Applied Physics 2021-04, Vol.60 (4)
Main Authors: Okuya, Masayuki, Shinji Mayumi, Okumura, Ryosuke, Masuda, Yuki, Yagi, Isao
Format: Article
Language:English
Subjects:
Anatase
Dielectric barrier discharge
Dye-sensitized solar cells
Dyes
Equilibrium
Irradiation
Nitrogen
Photovoltaic cells
Plasma
Substrates
Titanium
Titanium dioxide
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Summary:A non-equilibrium 2D plasma was induced on the insulating plate by a dielectric barrier discharge under a flowing mixture of nitrogen and oxygen gases. A titanium-peroxo precursor to prepare an anatase TiO2 film was irradiated with the plasma. The technique was applied to form a porous TiO2 layer for a dye-sensitized solar cell (DSSC). We found the N–O metastable plasma induced under the higher nitrogen gas concentration played an important role in forming a porous TiO2 layer and promoted a necking process between the TiO2 particles to reduce an internal resistance within the layer. The DSSC fabricated with the porous TiO2 layer showed maximum conversion efficiency of 3.7%, which was lower than that of the general DSSC. However, with a non-equilibrium 2D plasma, the substrate temperature was kept below 80 °C during the plasma irradiation, which opens the way for subsequent progress in producing a DSSC for daily use.
ISSN:0021-4922
1347-4065
DOI:10.35848/1347-4065/abe79b