| 학회 |
한국공업화학회 |
| 학술대회 |
2015년 봄 (04/29 ~ 05/01, BEXCO (부산)) |
| 권호 |
19권 1호 |
| 발표분야 |
고분자_포스터 |
| 제목 |
Benzocyclobutene-C60 Bisadducts: New Electron Acceptors for High-Open Circuit Voltage in Polymer Solar Cells |
| 초록 |
A new 56 π-electron fullerene acceptor material, benzocyclobutene-C60 bis-adducts (BCBCBA), was synthesized via the [2+2] cycloaddition of in-situ generated benzyne with C60 to raise the lowest unoccupied molecular orbital (LUMO) energy level of the fullerene. The LUMO level of BCBCBA was as high as -3.70 eV, which is -0.16 eV higher than that of phenyl-C61-butyric acid methyl ester (PCBM) (-3.86 eV). This result indicates the significant potential for producing high open-circuit voltage (VOC) values in polymer solar cells (PSCs). The poly(3-hexylthiophene) (P3HT):BCBCBA-based PSC device shows VOC and power conversion efficiency (PCE) values (VOC= 0.75 V and PCE= 3.20%) similar to those of bis-PCBM-based device (VOC= 0.74 V and PCE= 3.07%). On the other hand, four-membered linkages to C60 of BCBCBA operate worked as small addends, thus minimized the adverse effects of the presence of the regioisomers on the formation of the close-packing behavior between fullerene bis-adducts. |
| 저자 |
김영권, 조철희, 강현범, 김기현, 박선희, 김범준
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| 소속 |
KAIST |
| 키워드 |
풀러렌; 유기태양전지
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| E-Mail |
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