新型多环Thienoacene衍生物及其共轭聚合物合成、表征与光伏器件阴极界面修饰研究

项目名称： 新型多环Thienoacene衍生物及其共轭聚合物合成、表征与光伏器件阴极界面修饰研究

项目编号： No.51463011

项目类型： 地区科学基金项目

立项/批准年度： 2015

项目学科： 一般工业技术

项目作者： 夏养君

作者单位： 兰州交通大学

项目金额： 48万元

中文摘要： 本项目首先拟通过分子理性设计并合成三类新的多环thienoacene衍生物及其共轭聚合物（约20-30种）；其次通过综合多环thienoacene衍生物分子重组能、共轭面、共轭长度对多环thienoacene基共轭聚合物 （CPs）电荷迁移性能、基态-激发态局域偶极与光伏性能等的影响的研究，形成对合成新的用于构建高性能的多环thienoacen衍生物及其CPs有指导意义的设计规则；再次通过设计、合成适用于新的多环thienoacene基CPs为电子给体材料的聚合物太阳能电池（PSCs）的醇溶性聚合物/聚合物电解质阴极修饰材料，认识PSCs电子给体材料主链结构和阴极修饰层醇溶性聚合物/聚合物电解质主链结构、极性官能团数目等之间的关联；最后通过醇溶性聚合物阴极修饰材料和多环thienoacene 基共轭聚合物的优选、器件制备工艺的优化等，实现能量转换效率接近或达到10%的PSCs。

中文关键词： 共轭聚合物；聚合物太阳能电池；有机半导体；thienoacene

英文摘要： Following our prophase researches about the syntheses and characterizations of conjugated polymers based on polycyclic thienoacene and the modification of the photovoltaic cells' cathode interface via alcohol soluble conjugated polymers and/or polyelectrolytes, In this project, three novel polycyclic thienoacenes have been designed and would be synthesized. Then， three series of conjugated polymers with different energy levels and photoresponse properties, which were derived from the novel polycyclic thienoacenes and various electron acceptor units such as benzothiadiazole, alkylthieno[3,4-b]thiophene-2-carboxylate, 4-fluoro-alkyl- thieno[3,4-b]thiophene-2-carboxylate, 4,7-bis(thieno-2-yl)-2,1,3-benzothiadiazole etc,will be synthesized. On the other hand, alcohol soluble conjugated polymers/polyelectrolytes based on the polycyclic thienoacene derivatives will also designed and synthesized. We expected that high performance polymer solar cells (power conversion efficiency about 10%) would be achieved by the modification of the conjugated polymers and devices cathode. In the end, the approaches of the design and synthesis of novel polycyclic thienoacene-based CPs and alcohol soluble conjugated polymers for PSCs polymer could be abstracted through the studies of the relations between the charge transporting and photovoltaic properties etc of the polycyclic thienoacene-based polymers and the coplanar of the monomer, energy levels etc of the thienoacene-based conjugated polymers.

英文关键词： conjugated polymer;polymer photovoltaic cells;organic semiconductors;thienoacene