2024-12-04 リンショーピング大学
＜関連情報＞
- https://liu.se/en/news-item/sa-kan-giftfria-och-effektiva-solceller-tillverkas
- https://www.nature.com/articles/s41560-024-01678-5
異なる溶媒から加工された有機太陽電池の効率が等しく高いことから、モルフォロジー制御の重要な要因が明らかになった Equally high efficiencies of organic solar cells processed from different solvents reveal key factors for morphology control
Rui Zhang,Haiyang Chen,Tonghui Wang,Libor Kobera,Lilin He,Yuting Huang,Junyuan Ding,Ben Zhang,Azzaya Khasbaatar,Sadisha Nanayakkara,Jialei Zheng,Weijie Chen,Ying Diao,Sabina Abbrent,Jiri Brus,Aidan H. Coffey,Chenhui Zhu,Heng Liu,Xinhui Lu,Qing Jiang,Veaceslav Coropceanu,Jean-Luc Brédas,Yongfang Li,Yaowen Li & Feng Gao
Nature Energy Published:04 December 2024
DOI:https://doi.org/10.1038/s41560-024-01678-5
Abstract
The power conversion efficiency of organic solar cells (OSCs) is exceeding 20%, an advance in which morphology optimization has played a significant role. It is generally accepted that the processing solvent (or solvent mixture) can help optimize morphology, impacting the OSC efficiency. Here we develop OSCs that show strong tolerance to a range of processing solvents, with all devices delivering high power conversion efficiencies around 19%. By investigating the solution states, the film formation dynamics and the characteristics of the processed films both experimentally and computationally, we identify the key factors that control morphology, that is, the interactions between the side chains of the acceptor materials and the solvent as well as the interactions between the donor and acceptor materials. Our work provides new understanding on the long-standing question of morphology control and effective guides to design OSC materials towards practical applications, where green solvents are required for large-scale processing.
