2022 Fiscal Year Final Research Report
Modularization of dye-sensitized solar cells with a non-equilibrium plasma induced in a small cavity in a liquid phase
| Project/Area Number |
20K03916
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 14030:Applied plasma science-related
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| Research Institution | Shizuoka University |
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Principal Investigator |
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| Project Period (FY) |
2020-04-01 – 2023-03-31
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| Keywords | 非平衡平面プラズマ / 液中プラズマ / 誘電体バリア放電 / 色素増感太陽電池 / 酸化チタン / 酸化スズ |
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| Outline of Final Research Achievements |
In this study, we applied a novel plasma technique to form a porous TiO2 layer on an FTO-coated substrate for a DSSC. However, we employed a glass substrate here, because the handmaid electrode caused to a non-homogeneous plasma distribution with micrometers of fine sparks because of a low resolution of the screen-printed grid pattern and damaged the plastic substrate during film formation. We further investigated the active plasma species to promote a necking process between TiO2 particles during plasma irradiation by adjusting the volume fraction of the flowing mixture of nitrogen and oxygen gases.
However, the plasma induced under atmospheric pressure decayed rapidly, and the vertical distribution of the planar plasma on the electrode was too thin to allow annealing of a porous-TiO2 layer to produce a high-performance DSSC.
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| Free Research Field |
プラズマ科学
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| Academic Significance and Societal Importance of the Research Achievements |
従来型の放電方式に比べ、グリッドの微細化やデザイン性が増し、結果的にプラズマ発生領域のナノメーターオーダーでの制御が可能になる。この手法にプラズマの３次元的空間分布制御や、電極のスキャニング技術を組み込むことにより、ドット状やライン状のダイレクトパターニング製膜への展開が可能であり、将来は３次元の対象物表面に膜を『描く』技術への進展も期待される。
本製膜技術は、比較的手軽な技術でありながら、研究の成果を既存のプラズマディスプレイ技術と融合させ、さらにプラズマの空間分布状態の微細制御技術が加われば、将来的に微細加工から大面積製膜まで幅広い応用の利く革新的製膜技術へ発展することが期待される。
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