| 학회 |
한국고분자학회 |
| 학술대회 |
2012년 봄 (04/12 ~ 04/13, 대전컨벤션센터) |
| 권호 |
37권 1호 |
| 발표분야 |
분자전자 부문위원회 |
| 제목 |
Controlling Number of Indene Solubilizing Groups in Multiadduct Fullerenes for Tuning Optoelectronic Properties and Open-Circuit Voltage in Organic Solar Cells |
| 초록 |
The ability to tune the lowest unoccupied molecular orbital (LUMO)/highest occupied molecular orbital (HOMO) levels of fullerene derivatives used as electron acceptors is crucial in controlling the optical/electrochemical properties of these materials and the open circuit voltage (Voc) of solar cells. Here, we report a series of indene fullerene multiadducts (ICMA, ICBA, and ICTA) in which different numbers of indene solubilizing groups are attached to the fullerene molecule. The addition of indene units to fullerene raised its LUMO and HOMO levels, resulting in higher Voc values in the photovoltaic device. Bulk-heterojunction (BHJ) solar cells fabricated from poly(3-hexylthiophene) (P3HT) and a series of fullerene multiadducts- ICMA, ICBA, and ICTA showed Voc values of 0.65, 0.83, and 0.92 V, respectively. |
| 저자 |
강현범1, 조철희1, 조한희1, 강태의1, 김형준1, 김기현1, 윤성철2, 김범준1
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| 소속 |
1KAIST, 2한국화학(연) |
| 키워드 |
multiadduct fullerenese; electron acceptors; lowest unoccupied molecular orbital (LUMO); open circuit voltage (Voc); polymer solar cells(PSCs)
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| E-Mail |
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