摘要拓宽聚合物的吸收光谱范围和提高载流子迁移速率可以将聚合物太阳能电池的光电转换效率有效提高,合成新颖的窄带隙聚合物是提高其吸收光谱的有效途径之一。目前，本体异质结型太阳能电池的研究热点就是窄带隙聚合物。因为电子受体三唑基喹喔啉比单一的苯并三唑和喹喔啉拥有更强的吸电能力，所以三唑基喹喔啉类窄带隙聚合物极具有成为高效有机太阳能电池材料的潜力。本课题合成三唑基喹喔啉电子受体单元，并聚合得到窄带隙聚合物。以2-十二烷基-5,6-二硝基-4,7-二噻吩基-2H-苯并[d][1,2,3]三唑中间体为起始物通过三步反应得到三唑基喹喔啉电子受体单元，目标聚合物通过stille偶合反应得到。聚合物的物理，热学，光学，电化学性质都进行了检测。基于三唑基喹喔啉电子受体的聚合物正在进行太阳能电池的器件测试。63940

毕业论文关键词  三唑基喹喔啉  窄带隙聚合物  聚合物太阳能电池

毕业设计说明书（论文）外文摘要

Title Structural Design and Synthesis of Narrow Bandgap Triazolo[4,5-g]quinoxaline Based Conjugated Polymer

Abstract Enhanced the conjugated polymers absorption spectrum and high carrier mobility is the effective way to improve the power conversion efficiency (PCE) of polymer solar cells (PSCs). To achieve enhanced absorption of the polymer domains, the concept of low bandgap (LBG) conjugated copolymers is utilized by incorporating electron-rich donor (D) and electron-deficient acceptor (A) units into the polymer backbones. At present, the LBG polymers have attracted great attention in heterojunction polymer solar cells. As electron accepting unit triazolo[4,5-g]quinoxaline has stronger electron drawing ability than benzotriazole and quinoxaline, so triazolo[4,5-g]quinoxaline based LBG copolymers maybe a good candicate for high efficient PSCs. here, we synthesized the triazolo[4,5-g]quinoxaline unit and triazolo[4,5-g]quinoxaline based LBG copolymer. Started from 2-dodecyl-5,6-dinitro-4,7-di(thiophen-2-yl)-2H-benzo[d] [1,2,3]triazole intermediate, triazolo[4,5-g]quinoxaline unit monomer was get through three steps reaction. The target polymer was prepared via a Stille coupling. The physical, thermal, optical, electrochemical properties of polymer were determinated. Triazolo[4,5-g]quinoxaline based polymer solar cells is ongoing.

Keywords  Triazolo[4,5-g]quinoxaline  Narrow bandgap polymer  Polymer solar cells

1  绪论 1

1.1  太阳能电池 1

1.2  聚合物电池工作原理 1

1.3  聚合物电池结构 2

1.4  聚合物太阳能电池的发展历程简介 3

1.5  本课题研究内容 13

2  三唑基喹喔啉窄带隙聚合物设计合成 14

2.1  仪器与试剂 14

2.2  设计合成路线 16

2.3  合成步骤 16

3  测试分析与结果讨论 18

3.1  1HNMR核磁共振检测 18

3.2  GPC测定 22

3.3  TGA测定 23

3.4  UV-vis测定 24

3.5  电化学测定 25

3.6  本章小结 28

结论 29

致谢