2023 Fiscal Year Final Research Report
High-efficient planar perovskite solar cells using all vapor phase process
| Project/Area Number |
20K05408
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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 31020:Earth resource engineering, Energy sciences-related
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| Research Institution | Ishikawa National College of Technology |
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Principal Investigator |
Seto Satoru 石川工業高等専門学校, 電気工学科, 客員研究員 (50216545)
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| Co-Investigator(Kenkyū-buntansha) |
山田 悟 石川工業高等専門学校, 電気工学科, 教授 (40249777)
鈴木 和彦 北海道科学大学, 工学部, 教授 (30226500)
荒木 秀明 長岡工業高等専門学校, 物質工学科, 教授 (40342480)
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| Project Period (FY) |
2020-04-01 – 2024-03-31
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| Keywords | Perovskite solar cell / vapor phase / passivation |
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| Outline of Final Research Achievements |
In this project, the fabrication process of high-efficiency perovskite solar cells with an all-vapour phase, where each layer was deposited using conventional vacuum evaporation equipment, was studied. Perovskite solar cells with an FTO/CuPc/MAPbI3/C60/BCP/Ag structure were achieved with a power conversion efficiency of over 16 %. In particular, copper phthalocyanine (CuPc) was used as the hole transport layer instead of PEDOT:PSS, which is commonly used in perovskite solar cells. This is because CuPc is a sublimable organic material and high-purity CuPc is commercially available. Furthermore, after the perovskite film (MAPbI3) was prepared, PCBM solution was spin-coated onto the perovskite film to passivate defects in grain boundaries and at surfaces of the MAPbI3 microcrystals. The results showed that the passivation with PCBM improved the open circuit voltage by 0.08 V.
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| Free Research Field |
Semiconductor device
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| Academic Significance and Societal Importance of the Research Achievements |
In the past, solution process was a mainstream for fabrication of perovskite solar cells. Our research showed that a vapor-based fabrication process is also effective for fabrication of perovskite solar cells and environmentally friendly fabrication method for perovskite solar cells.
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