| 학회 |
한국고분자학회 |
| 학술대회 |
2012년 가을 (10/11 ~ 10/12, 창원컨벤션센터) |
| 권호 |
37권 2호 |
| 발표분야 |
분자전자 부문위원회 |
| 제목 |
Complementary Absorbing Star-Shaped Small Molecules for the Preparation of Ternary Cascade Energy Structures in Organic Photovoltaic Cells |
| 초록 |
Two anthracene-based star-shaped conjugated small molecules, HBantHBT, and BantHBT, were used as electron-cascade donor materials by incorporating them into organic photovoltaic cells prepared using a PBTADN:PC71BM blend. The small molecules penetrated the PBTADN:PC71BM blend layer to yield complementary absorption spectra through appropriate energy level alignment and optimal domain sizes for charge carrier transfer. A high JSC and FF were obtained using solar cells prepared with the ternary blend. The highest photovoltaic performance of the PBTADN:BantHBT:PC71BM blend solar cells was characterized by a JSC of 11.0 mAcm–2, an VOC of 0.91 V, a FF of 56.4%, and a power conversion efficiency (PCE) of 5.6% under AM1.5G illumination. The effects of the small molecules on the ternary blend were investigated by comparison with the traditional P3HT:PC61BM system. |
| 저자 |
차효정1, 정대성2, 백숙영3, 이민정4, 최동훈3, 김윤희4, 박찬언1
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| 소속 |
1POSTECH, 2동아대, 3고려대, 4경상대 |
| 키워드 |
Ternary cascade energy structure; anthracene-based star-shaped conjugated small molecules; organic photovoltaic cells
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| E-Mail |
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