| 학회 |
한국고분자학회 |
| 학술대회 |
2017년 가을 (10/11 ~ 10/13, 제주컨벤션센터) |
| 권호 |
42권 2호 |
| 발표분야 |
분자전자 부문위원회 I |
| 제목 |
All-small molecule solar cells incorporating NDI-based acceptors: Synthesis and characterization |
| 초록 |
A series of NDI-based small molecules was synthesized as non-fullerene acceptors and incorporated in all-small molecule solar cells. The NDI-based acceptors, NDICN-T, NDICN-BT, and NDICN-TVT, had distinct linkers between two NDI units to extend the conjugation and modulate the geometric structures of the NDI dimers. The NDI-based small molecule acceptors exhibited different morphological behavior in bulk heterojunction blends with DTS-F donors. The photovoltaic devices with NDICN-TVT gave the highest power conversion efficiency of 3.01%, whereas the DTS-F:NDICN-T and DTS-F:NDICN-BT devices provided PCEs of 1.81% and 0.13%, respectively. Studies of the charge generation, transfer, and transport properties for understanding the structure-property relations revealed that the DTS-F:NDICN-TVT devices with well-developed domains and crystalline structures performed well, whereas an excessive miscibility between DTS-F and NDICN-BT disrupted the crystallinity and yielded a poor performance. |
| 저자 |
홍지수1, 하연희2, 차효정3, James R. Durrant3, 권순기2, 안태규4, 김윤희2, 박찬언1
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| 소속 |
1포항공과대, 2경상대, 3Imperial College London, 4한국교통대 |
| 키워드 |
Organic photovoltaics; All-small molecule solar cell; Non-fullerene acceptor; Blend morphology; Charge transfer; Charge transport
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| E-Mail |
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