We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
High T<sub>g</sub> Polymer Insulator Yields Organic Photovoltaic Blends with Superior Thermal Stability at 150 <sup>o</sup>C.
- Authors
Chen, Fei Please verify that the linked ORCID identifiers are correct for each author. The ORCID IDs for 'Miaomiao Li' and 'Long Ye' seem to be invalid. Please check and supply the correct ORCID IDs for these authors. --> Please confirm that given names and sur; Zhang, Ying; Wang, Qi; Gao, Mengyuan; Kirby, Nigel; Peng, Zhongxiang; Deng, Yunfeng; Li, Miaomiao; Ye, Long
- Abstract
Main observation and conclusion: Record‐breaking organic solar cells (OSCs) based on blends of polymer donors and small molecule acceptors often show undesirable degradation, which severely precludes their practical use. Herein, we demonstrate a facile and cost‐effective approach to construct thermally stable OSCs at 150 oC by incorporating a small amount of a polymer insulator polyacenaphthylene (PAC) with high glass‐transition temperature over 230 oC into polymer:acceptor blends. The model PTB7‐Th:EH‐IDTBR blend with 10 wt% PAC maintained above 85% of its initial efficiency upon continuous heating at 150 oC for over 800 h, while the efficiency of the blend without PAC sharply dropped by 70% after ~300 h. Owing to high miscibility with acceptors, PAC confines the motion of the acceptor molecules and suppresses the acceptor crystallization at elevated temperatures, leading to significantly improved stability. Importantly, the effectiveness of this blending approach was also validated in many other OSC systems, showing great potential for achieving high‐performance thermally stable electronics.
- Subjects
THERMAL stability; POLYMER blends; CONJUGATED polymers; POLYMERS; SMALL molecules; SOLAR cells
- Publication
Chinese Journal of Chemistry, 2021, Vol 39, Issue 9, p2570
- ISSN
1001-604X
- Publication type
Article
- DOI
10.1002/cjoc.202100270