Nature Energy ( IF 56.7 ) Pub Date : 2022-04-14 , DOI: 10.1038/s41560-022-00997-9 Youyu Jiang , Xinyun Dong , Lulu Sun , Tiefeng Liu , Fei Qin , Cong Xie , Pei Jiang , Lu Hu , Xin Lu , Xianmin Zhou , Wei Meng , Ning Li , Christoph J. Brabec , Yinhua Zhou
Efficient and stable organic solar cells via full coating are highly desirable. Poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) is a classic conducting polymer complex and widely used for hole collection in fully printable devices. However, PEDOT:PSS is typically dispersed in water and exhibits strong acidity that deteriorates device efficiency and stability. Here we report an alcohol-dispersed formulation (denoted as PEDOT:F) by adopting perfluorinated sulfonic acid ionomers as counterions. The ionomers have a special advantage of having two solubility parameters and can be dispersed in water or alcohols, which enables us to prepare PEDOT:F formulations dispersed in alcohols. The alcohol-dispersed formulation has good wetting properties and low acidity, which avoids the drawbacks of aqueous PEDOT:PSS. Fully printable organic photovoltaics (from bottom electrode to top electrode) based on PEDOT:F were obtained with a power conversion efficiency of 15% and could retain 83% of the initial efficiency under continuous illumination at maximum power point tracking for 1,330 h.
中文翻译:
一种用于完全可印刷有机太阳能电池的醇分散导电聚合物复合物,具有更高的稳定性
非常需要通过全涂层的高效且稳定的有机太阳能电池。聚 (3,4-乙烯二氧噻吩):聚苯乙烯磺酸盐 (PEDOT:PSS) 是一种经典的导电聚合物复合物,广泛用于完全可打印设备中的孔收集。然而,PEDOT:PSS 通常分散在水中并表现出强酸性,这会降低器件的效率和稳定性。在这里,我们通过采用全氟磺酸离聚物作为抗衡离子报告了一种醇分散制剂(表示为 PEDOT:F)。离聚物具有两个溶解度参数的特殊优势,可以分散在水或醇中,这使我们能够制备分散在醇中的 PEDOT:F 制剂。醇分散配方具有良好的润湿性和低酸度,避免了水性 PEDOT:PSS 的缺点。