| 학회 |
한국고분자학회 |
| 학술대회 |
2012년 봄 (04/12 ~ 04/13, 대전컨벤션센터) |
| 권호 |
37권 1호 |
| 발표분야 |
대학원생 구두발표 |
| 제목 |
Facile Synthesis of o-Xylenyl Fullerene Multiadducts for High Open Circuit Voltage and Efficient Polymer Solar Cells |
| 초록 |
We have developed a novel oxylenyl C60 bis-adduct (OXCBA) via a [4 + 2] cycloaddition between C60 and an irreversible diene intermediate from α,α’-dibromo-o-xylene. OXCBA was successfully applied as the electron acceptor with poly(3-hexylthiophene) (P3HT) in a PSC, showing a high efficiency of 5.31% with Voc of 0.83 V. This composite showed a nearly 50% enhancement in efficiency compared to the P3HT:PCBM control device (3.68% with Voc of 0.59 V). Furthermore, tuning the molar ratio between C60 and the α,α’-dibromo-o-xylene group from 1:1 to 1:3 in the reaction scheme enables facile control over the number of o-xylenyl solubilizing groups ultimately tethered to the fullerene, thus producing o-xylenyl C60 mono-, bis-, and tris-adducts (OXCMA, OXCBA, and OXCTA) with different LUMO levels. As the number of solubilizing groups increased, Voc values of the P3HT-based BHJ solar cells increased from 0.63 V (OXCMA) to 0.83 V (OXCBA) to 0.98 V (OXCTA). |
| 저자 |
김기현1, 강현범1, 남소연2, 정재욱2, 김판석2, 조철희1, 이창진2, 윤성철2, 김범준1
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| 소속 |
1KAIST, 2한국화학(연) |
| 키워드 |
electron acceptors; bisadduct fullerene; high open circuit voltage; polymer solar cells
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| E-Mail |
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