| 학회 |
한국고분자학회 |
| 학술대회 |
2021년 가을 (10/20 ~ 10/22, 경주컨벤션센터) |
| 권호 |
46권 2호 |
| 발표분야 |
분자전자 부문위원회 Ⅰ,Ⅱ |
| 제목 |
Effect of Terminal Atoms of Side Chain in Small Molecule Acceptors on the Optimized Morphology and Performance of Organic Solar Cells |
| 초록 |
With the rapid growth of power conversion efficiency (PCE) of organic solar cells (OSCs) based on polymer donors (PDs) and small molecule acceptors (SMAs), it is of great interest to find an optimal combination of PD and SMA mediated by favorable donor/acceptor (D/A) interaction. To address this important issue, here we investigate the effects of the PD/SMA pairing in terms of terminal atoms of alkoxy benzene-based side chain of the newly developed SMA series on the blend morphology, the interfacial molecular interactions, and the resulting photovoltaic properties. As a result, we demonstrate that the halogenated terminal atom of side chain placed on the non-conjugated position can significantly affect to the interfacial interactions and the blend morphology (miscibility and crystallinity) with PD, and thus it eventually improves the open-circuit voltage, short-circuit current, and fill factor of the OSCs with PCE over 16%. |
| 저자 |
최기석1, 김건우1, Cheng Sun2, 박진수1, 김윤희2, 김범준1
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| 소속 |
1한국과학기술원, 2경상대 |
| 키워드 |
organic solar cells; small molecule acceptors; side chain; terminal atoms
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| E-Mail |
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