三元无规策略在高性能非富勒烯有机太阳能电池活性层的应用  

Ternary Random Strategy Applied in Active Layer of High Performance Non-Fullerene Organic Solar Cells

作　　者：李春燕 林鑫 王文[1] 甄红宇 Chunyan Li;Xin Lin;Wen Wang;Hongyu Zhen(College of Chemistry and Materials Science,Fujian Normal University,Fuzhou 350007,China)

机构地区：[1]福建师范大学化学与材料学院,福州350007

出　　处：《化学进展》2024年第9期1316-1335,共20页Progress in Chemistry

基　　金：国家自然科学基金项目(No.51573026、22261002、61804065);福建省自然科学基金项目(No.2020J01144)资助。

摘　　要：近年来,由于窄带隙小分子受体的快速发展以及高性能聚合物给体不断出现,非富勒烯有机太阳能电池(NF-OSCs)取得了突破性进展,其能量转换效率(PCE)已接近20%。然而,随着D-A交替共聚聚合物材料设计逐渐饱和,迫切需要开发更高效的共轭聚合物材料。而利用无规共聚策略制备的D-A型无规共聚物具有能级易调节、有宽且强的吸收以及较高的吸光系数等优势,因此备受关注。本文首先讨论了无规D-A共聚策略在调控聚合物性质和器件性能方面的优势。其次,分别从无规聚合物给体材料和受体材料两方面综述了无规共聚策略在活性层材料的应用研究。最后,对于三元无规聚合物在有机太阳能电池中的进一步发展进行了总结与展望。In recent years,there has been significant progress in non-fullerene organic solar cells(NF-OSCs)due to the rapid development of narrow-bandgap small-molecule acceptor materials and the high-performance polymer donor materials,with the power conversion efficiency(PCE)approaching 20%.However,as the design of alternating D-A copolymer materials reaches saturation,there is an urgent need to develop more efficient conjugated polymer materials.The ternary random strategy has emerged to address this challenge.The advantages of the ternary random copolymerization,including easy energy level tuning,broad and strong absorption,and high molar absorptivity,which have attracted considerable attention in the field of organic solar cells.In this review,firstly,the advantages of the ternary random copolymerization strategy in modulating polymer properties and device performance are discussed.Through this strategy,the active layer morphology can be effectively regulated and optimized,and thus the charge transfer efficiency can be improved leading to the improved PCE.Furthermore,the application of the ternary random copolymerization into NF-OSCs is summarized from the perspectives of random polymer donors and acceptors.Finally,a summary and outlook of the further development of random polymers are presented.As expected,to understand the design concept and advantages of ternary random strategy would be beneficial for the development of organic solar cells.

关 键 词：三元无规共聚 D-A共聚 非富勒烯有机太阳能电池 第三单元 

分 类 号：O631[理学—高分子化学] TM914.4[理学—化学]