| Project/Area Number |
22750039
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Organic chemistry
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| Research Institution | Kyoto University |
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Principal Investigator |
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| Project Period (FY) |
2010 – 2011
|
| Project Status |
Completed (Fiscal Year 2011)
|
| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2011: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2010: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Keywords | フラーレン / 構造有機化学 / 有機薄膜太陽電池 / 電子受容材料 / 有機半導体 / PCBM / バルクヘテロ接合 / モルフォロジー / ダンベル型フラーレン / 光電変換 / 1,2-付加体 / バルクヘテロジャンクション / アクセプター材料 / n型材料 / リチウムアセチリド |
|---|
| Research Abstract |
Fullerene derivatives have occupied a dominant position in bulk heterojunction(BHJ) solar cells as n-type organic semiconductors. In this work, we developed a method to modify theσ-frameworks of C60 and succeeded in the preparation of three types of skeletally-transformed fullerenes 4, 5, and 6 with distinct LUMO levels. We also evaluated the performance in the BHJ solar cells consisting of the C60 derivative and poly(3-hexylthiophene)(P3HT) as the acceptor and the donor materials, respectively. The electrochemical measurements showed that 6 has the highest LUMO level due to the transformation of one of the carbonyl groups. As a result, 6 : P3HT cell marked the highest open-circuit voltage(Voc) of 0. 74 V, which is 20% higher than that of the cell using the benchmark acceptor material PCBM(Voc=0. 60 V).
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