Panidi Julianna, Mazzolini Eva, Eisner Flurin, Fu Yuang, Furlan Francesco, Qiao Zhuoran, Rimmele Martina, Li Zhe, Lu Xinhui, Nelson Jenny, Durrant James R, Heeney Martin, Gasparini Nicola
Department of Chemistry & Centre for Processable Electronics, Imperial College London, London W12 0BZ, U.K.
School of Engineering and Materials Science (SEMS), Queen Mary University of London, London E1 4NS, U.K.
ACS Energy Lett. 2023 Jun 16;8(7):3038-3047. doi: 10.1021/acsenergylett.3c00891. eCollection 2023 Jul 14.
With the advent of nonfullerene acceptors (NFAs), organic photovoltaic (OPV) devices are now achieving high enough power conversion efficiencies (PCEs) for commercialization. However, these high performances rely on active layers processed from petroleum-based and toxic solvents, which are undesirable for mass manufacturing. Here, we demonstrate the use of biorenewable 2-methyltetrahydrofuran (2MeTHF) and cyclopentyl methyl ether (CPME) solvents to process donor: NFA-based OPVs with no additional additives in the active layer. Furthermore, to reduce the overall carbon footprint of the manufacturing cycle of the OPVs, we use polymeric donors that require a few synthetic steps for their synthesis, namely, PTQ10 and FO6-T, which are blended with the Y-series NFA Y12. High performance was achieved using 2MeTHF as the processing solvent, reaching PCEs of 14.5% and 11.4% for PTQ10:Y12 and FO6-T:Y12 blends, respectively. This work demonstrates the potential of using biorenewable solvents without additives for the processing of OPV active layers, opening the door to large-scale and green manufacturing of organic solar cells.
随着非富勒烯受体（NFAs）的出现，有机光伏（OPV）器件目前已实现了足以实现商业化的高功率转换效率（PCEs）。然而，这些高性能依赖于由石油基和有毒溶剂加工而成的活性层，这对于大规模制造来说是不可取的。在此，我们展示了使用生物可再生的2-甲基四氢呋喃（2MeTHF）和环戊基甲基醚（CPME）溶剂来加工供体：基于NFA的OPV，且活性层中无需额外添加物。此外，为了减少OPV制造周期的整体碳足迹，我们使用了合成过程只需几步的聚合物供体，即PTQ10和FO6-T，它们与Y系列NFA Y12混合。以2MeTHF作为加工溶剂实现了高性能，PTQ10:Y12和FO6-T:Y12混合物的PCE分别达到14.5%和11.4%。这项工作展示了使用无添加剂的生物可再生溶剂加工OPV活性层的潜力，为有机太阳能电池的大规模绿色制造打开了大门。
