基于刚性连接单元的双缆共轭...太阳能电池中的应用（英文）_方海盛.pdf

Chem.J.Chinese Universities,2023,44(7),2023014620230146(1/11)CHEMICAL JOURNAL OF CHINESE UNIVERSITIES高 等 学 校 化 学 学 报研究论文基于刚性连接单元的双缆共轭高分子材料的合成及在单组分有机太阳能电池中的应用方海盛1，梁世洁1，肖承义1，夏冬冬2，李韦伟1（1.北京化工大学材料学院,北京软物质科学与工程高精尖创新中心&有机无机复合材料国家重点实验室,北京 100029；2.江西省科学院应用化学研究所,南昌 330096）摘要 通过调节刚性连接单元中联二噻吩的烷基链区域位置,合成了两种新型双缆共轭高分子聚合物聚2-(4-3,3-十二烷基-5-4-(1-4-5-(2-乙基己基)噻吩-2-基-8-5-(庚烷-3-基)噻吩-2-基苯并1,2-b 4,5-b 二噻 吩-2-基-4,6-二酮-4H-噻吩并3,4-C吡咯-5(6H)-基)苯基-2,2-联噻吩-5-基-苯基)-9-(二十三烷-12-基)蒽2,1,9-def 6,5,10-d e f 二异喹啉-1,3,8,10(2H,9H)-四酮（FLP7）和聚2-(4-4,4-十二烷基-5-4-(1-4-5-(2-乙基己基)噻吩-2-基-8-5-(庚烷-3-基)噻吩-2-基苯并1,2-b 4,5-b 二噻吩-2-基-4,6-二酮-4H-噻吩并3,4-C吡咯-5(6H)-基)苯基-2,2-联噻吩-5-基-苯基)-9-(二十三烷-12-基)蒽2,1,9-def 6,5,10-d e f 二异喹啉-1,3,8,10(2H,9H)-四酮（FLP8）.这两种双缆共轭高分子聚合物基于噻吩二甲酰亚胺(TPD)给体骨架和苝酰亚胺(PBI)受体侧链.通过调控刚性连接链上烷基链的位置,使刚性链处烷基链的构象由朝外变为朝内,从而改善了聚合物的自聚集能力、薄膜形态和光电转换效率.与FLP8聚合物相比,FLP7聚合物在单组分有机太阳能电池中表现出更高的光电性能参数,实现了1.59%的能量转换效率.关键词 双缆共轭高分子；刚性链；自聚集；单组分有机太阳能电池中图分类号 O631 文献标志码 A doi：10.7503/cjcu20230146Double-cable Conjugated Polymers with Rigid Linkers for Single-component Organic Solar CellsFANG Haisheng1，LIANG Shijie1，XIAO Chengyi1，XIA Dongdong2*，LI Weiwei1*（1.Beijing Advanced Innovation Center for Soft Matter Science and Engineering&State Key Laboratory of OrganicInorganic Composites，College of Materials，Beijing University of Chemical Technology，Beijing 100029，China；2.Institute of Applied Chemistry，Jiangxi Academy of Sciences，Nanchang 330096，China）Abstract Two novel double-cable conjugated polymers，poly 2-（4-3，3-didodecyl-5-4-（1-4-5-（2-ethylhex收稿日期：2023-03-29.网络首发日期：2023-05-06.联系人简介：李韦伟,男,博士,教授,主要从事有机光电功能材料与器件研究.E-mail:夏冬冬，男，博士，助理研究员，主要从事有机功能材料的构筑及其应用方面的研究.E-mail：基金项目：中国科技部(批准号:2018YFA0208504)、北京市自然科学基金(批准号:JQ21006)、国家自然科学基金(批准号:92163128,52073016,21905018)、中央高校基本科研业务费(批准号:buctrc201828,XK1802-2)、有机-无机复合材料国家重点实验室开放课题(批准号:oic-202201006)、超分子结构与材料国家重点实验室开放课题(批准号:sklssm202209)和江西省科学院(批准号:2022YSBG22031,2022YJC2019,2022YYB10)资助.Supported by the Ministry of Science and Technology,China(No.2018YFA0208504),the Beijing Natural Science Foundation,China(No.JQ21006),the National Natural Science Foundation of China(Nos.92163128,52073016,21905018),the Fundamental Research Funds for the Central Universities,China(Nos.buctrc201828,XK1802-2),the Open Project of State Key Laboratory of Organic-Inorganic Composites,China(No.oic-202201006),the Open Project of State Key Laboratory of Supramolecular Structure and Materials,China(No.sklssm202209)and the Jiangxi Academy of Sciences,China(Nos.2022YSBG22031,2022YJC2019,2022YYB10).CHEMICAL JOURNAL OF CHINESE UNIVERSITIES高 等 学 校 化 学 学 报研究论文Chem.J.Chinese Universities,2023,44(7),2023014620230146(2/11)yl）thiophen-2-yl-8-5-（heptan-3-yl）thiophen-2-yl benzo 1，2-b 4，5-b dithiophen-2-yl-4，6-dioxo-4H-thieno 3，4-c pyrrol-5（6H）-yl）phenyl-2，2-bithiophen-5-yl phenyl）-9-（tricosan-12-yl）anthra 2，1，9-def 6，5，10-d e f diisoquinoline-1，3，8，10（2H，9H）-tetraone）（FLP7）and poly 2-（4-4，4-didodecyl-5-4-（1-4-5-（2-ethylhexyl）thiophen-2-yl-8-5-（heptan-3-yl）thiophen-2-yl benzo 1，2-b 4，5-b dithiophen-2-yl -4，6-dioxo-4H-thieno 3，4-c pyrrol-5（6H）-yl）phenyl-2，2-bithiophen-5-yl phenyl）-9-（tricosan-12-yl）anthra 2，1，9-def 6，5，10-d e f diisoquinoline-1，3，8，10（2H，9H）-tetraone（FLP8），have been developed with bithiophene-based rigid linkers.These polymers were synthesized by adopting a thiophenedicarboximide（TPD）donor backbone and perylene biimide（PBI）acceptor side units.By adjusting the position of alkyl chains on the rigid linkers from external to interior，the self-aggregation capacity，film morphology and photoelectric conversion efficiency of the polymers were improved.Finally，the FLP7 polymer demonstrated superior photoelectric performance parameters as compared to the FLP8 polymer and achieved a power conversion efficiency of 1.59%.Keywords Double-cable conjugated polymer；Rigid linker；Self-aggregation；Single-component organic solar cell1 IntroductionOrganic solar cells（OSCs）have garnered significant attention and research interest due to their unique advantages，such as light weight，high flexibility，and semi-transparency17.Notably，the power conversion efficiencies（PCEs）of OSCs have made remarkable progress，surpassing 19%814，primarily due to the utilization of novel materials and sophisticated device processing techniques.However，most high-performance OSCs are binary systems whose optimized film morphology is usually thermodynamically unstable and prone to large-scale phase separation in practical applications7，1521.Although many approaches have been employed to enhance their stability2226，the commercial viability of these approaches is still distant.The development of single-component OSCs（SCOSCs），based on double-cable conjugated polymers or molecular dyads，has emerged as a promising approach to mitigate the issue of stability2732.This approach involves the integration of donor and acceptor blocks within a singular material through a covalent linker.Whilst double-cable polymers have shown improved stability in comparison to bulk heterojunction（BHJ）systems，their energy conversion efficiency is