客体增塑剂调控非卤溶剂中聚合物给体预聚集行为制备高性能有机太阳能电池  

Pre-aggregation Manipulation of Polymer Donor Using Guest Plasticizers for Developing Nonhalogenated Green Solvent Processed High-performance Organic Solar Cells

作　　者：陈海阳 李欣琪 丁俊源 黄雨婷 李耀文[1] CHEN Haiyang;LI Xinqi;DING Junyuan;HUANG Yuting;LI Yaowen(Suzhou Key Laboratory of Novel Semiconductor-optoelectronics Materials and Devices,College of Chemistry,Chemical Engineering and Materials Science,Soochow University,Suzhou 215123,China)

机构地区：[1]苏州大学材料与化学化工学部,苏州市新型半导体光电材料与器件重点实验室,苏州215123

出　　处：《高等学校化学学报》2023年第7期192-202,共11页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:52273188,22075194,51820105003);国家重点研发计划项目(批准号:2020YFB1506400);江苏省自然科学基金(批准号:20KJA430010);江苏高校优势学科建设工程资助项目;博士后创新人才支持计划项目(批准号:BX20220221)资助

摘　　要：随着以Y6为代表的非富勒烯受体的飞速发展,有机太阳能电池(OSCs)效率(PCE)已经突破19%.然而,其苛刻的制备条件(如使用高挥发性、剧毒的氯仿为溶剂)并不符合大面积印刷的技术要求和工业环保标准.本文设计并合成了一种具备硅氧烷重复单元侧链的客体分子BTP-3Si-4F,可作为增塑剂抑制PM6在非卤化(甲苯)溶液中的预聚集行为,从而获得纳米尺寸的优势相分离.最终,基于甲苯加工的PM6∶Y6∶BTP-3Si-4F和PM6∶BTP-eC9∶BTP-3Si-4F活性层分别获得了16.92%和17.64%的PCEs.本文结果表明,通过设计客体分子调控给体的预聚集行为是在非卤化溶液中制备高效OSCs的一种有效的通用策略.Recent advances in non-fullerene acceptors like Y6 have pushed the power conversion efficiencies(PCEs)of organic solar cells(OSCs)above 19%.However,the harsh fabrication conditions,such as the use of the highly volatile chloroform solvent,are not suitable for large-area printing technologies and environmental standards.Here,a third component(guest)BTP-3Si-4F is designed and synthesized with siloxane repeating units in side chains.The guest BTP-3Si-4F could act as a plasticizer,which inhibits the pre-aggregation behavior of PM6 in nonhalo-genated(toluene)solution and enables the active layer to form a morphology with suitable phase separation scale.Therefore,BTP-3Si-4F blended with PM6∶Y6 and PM6∶BTP-eC9 deliver the highest PCEs of 16.92%and 17.64%,respectively.The results demonstrate controlling the pre-aggregation behavior of donor via guest molecules is an effective and universal way to achieve efficient OSCs in non-halogenated solution.

关 键 词：有机太阳能电池 增塑剂 主客体活性层 预聚集 

分 类 号：O631[理学—高分子化学]