材料科学
有机太阳能电池
过滤(数学)
太阳能电池
化学工程
理论(学习稳定性)
纳米技术
复合材料
聚合物
光电子学
计算机科学
统计
数学
机器学习
工程类
作者
Emily J. Yang,Joel Luke,Yuang Fu,Zhuoran Qiao,Matthew Bidwell,Adam V. Marsh,Martin Heeney,Nicola Gasparini,Ji‐Seon Kim
标识
DOI:10.1002/adfm.202406941
摘要
Abstract Despite major advances in efficiency, the operational stability of organic photovoltaic (OPV) devices remains poor. Therefore, understanding the degradation mechanisms and identifying potential solutions to improve device stability is critical to enabling the widespread commercialization of OPVs. Herein, simple filtration of the PBDB‐T:ITIC photoactive layer (PAL) solution prior to film deposition is demonstrated to enhance OPV device operational stability without compromising initial device performance. The effect of filtration, a commonly used but poorly understood OPV fabrication step, is investigated using a range of chemical, structural, and optoelectronic methods, on solutions and films. Filtration is found to remove large aggregates from solution without disrupting nanoscale preaggregation, resulting in enhanced acceptor ordering in PBDB‐T:ITIC thin films, significantly improving morphological stability and photostability. This simple and facile method is confirmed to be a general strategy that also works for other PBDB‐T‐containing OPV blends, including Y6‐based systems, and highlights how subtle changes in morphology can result in dramatic differences in operational stability.
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