2014 Fiscal Year Final Research Report
Development of high-performance inverted thin film organic solar cell based on the synthesis of novel polymer
| Project/Area Number |
24350092
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Functional materials/Devices
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| Research Institution | Kanazawa University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
MAEDA Katsuhiro 金沢大学, 物質化学系, 准教授 (90303669)
KUWABARA Takayuki 金沢大学, 物質化学系, 准教授 (80464048)
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| Co-Investigator(Renkei-kenkyūsha) |
IKAI Tomoyuki 金沢大学, 物質化学系, 准教授 (90402495)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Keywords | 有機薄膜太陽電池 / 新規ドナー材料 / 逆構造 |
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| Outline of Final Research Achievements |
To increase the open-circuit voltage of inverted polymer solar cells (PSCs) and to improve the productivity of film preparation, we synthesized novel polymers consisting of benzo[1,2-b:4,5-b0]dithiophene and thieno[3,4-b]thiophene units (PTB-F), containing 4-fluorophenyl pendants as electron donor materials. We found that both the HOMO and LUMO were linearly deepened with an increasing TT-F content. Meanwhile, the solubility to chlorobenzene decreased with the increasing TT-F content. These polymers were used as electron donor materials in inverted-type PSCs. 4-Fluorophenyl pendants also influenced the morphology of the PTBFx:PC61BM blends, the crystallinity and orientation in the active layers, and hole mobility, which appear to be closely related to the photovoltaic properties. PTB-F75 bearing a moderate content of 4-fluorophenyl pendants provided superior performances with power conversion efficiency of 4.3%.
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| Free Research Field |
光エネルギー変換
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