2016 Fiscal Year Final Research Report
High efficiency organic photovoltaic cell with nano structure and controlled p-n ratio fabricated by electrospray deposition
| Project/Area Number |
26420267
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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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| Research Field |
Electronic materials/Electric materials
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| Research Institution | Saitama University |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | 有機薄膜太陽電池 / 静電塗布法 / 溶媒蒸発時間 / 分子配向 / ナノファイバー / グラデーション |
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| Outline of Final Research Achievements |
In this research, we investigated the fabrication technique of ZnO nanofiber, controlled p-n ratio in a depth direction, and the controlling method of solvent evaporation time for realizing the high photovoltaic performance. The diameter of 30 nm was successfully achieved by optimizing molecular weight and concentration of PVP in ZnO precursor solution. In addition, the p-n ratio can be controlled by adding the pulsed voltage for the electrospray deposition method. Here, the each solutions were sprayed alternately, resulting in the blended films with different concentrations. Finally, the solvent evaporation time of droplet is found to affect the polymer orientation in the thin film, which results in the improved photovoltaic performance. As a result, the highest photoconversion efficiency of 8.6% was achieved by the electrospray deposition method.
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| Free Research Field |
有機エレクトロニクス
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