| 학회 |
한국고분자학회 |
| 학술대회 |
2022년 봄 (04/06 ~ 04/08, 대전컨벤션센터) |
| 권호 |
47권 1호 |
| 발표분야 |
고분자구조 및 물성 |
| 제목 |
End-group Effect of Spirobifluorene-based Non-fullerene Acceptors for the Environmentally Benign Process |
| 초록 |
Spirobifluorene based non-fullerene acceptors (NFAs) having meta-ethylhexyl oxy (m-OEh) substituents (PBDB-T: spiro-bridged NFAs) were synthesized. The orthogonal molecular structure of the m-OEh-substituted spirobifluorene with different end groups provided high solubility and kept the stable morphology between donor-acceptor. Organic Photovoltaic (OPV) device performance was not significantly affected by switching the processing solvent from a chlorinated solvent to an environmentally benign solvent, because suitable morphology and crystallinity were retained. The ITO/ZnO/PBDB-T:spiro-bridged NFA/MoOx/Ag OPV devices prepared using a chlorobenzene as the processing solvent displayed maximum efficiency in the range of 6.44–5.78%, while the devices made using xylene as the processing solvent had a lower maximum efficiency ranging from 6.14–4.66%. The OPV performance of the devices made using chlorobenzene decreased in the order of sp-mOEh-ITIC ＞ sp-mOEh-ITIC-M ＞ sp-mOEh-ITIC-F ＞ sp-mOEh-ITIC-Cl because an electron donating end group increased open-circuit voltage (Voc), while the electron withdrawing end group increased the short-circuit current density (Jsc). Although the OPV performance of the four spiro-bridged derivatives by xylene was showed to be similar order of that by chlorobenzene solvent processing, the efficiency drop from chlorobenzene solvent to xylene solvent showed following order sp-mOEh-ITIC ＜ sp-mOEh-ITIC-M ＜ sp-mOEh-ITIC-F ＜ sp-mOEh-ITIC-Cl, which depended on the polarity effect of end groups. |
| 저자 |
홍광표1, 성민재1, 박병욱2, 최지영1, 김제한3, Cheng Sun1, 강홍규2, 권순철2, 장수영2, 김윤희1, 이광희2, 권순기1
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| 소속 |
1경상국립대, 2광주과학기술원, 3포항가속기(연) |
| 키워드 |
- |
| E-Mail |
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