A 3-Fluoro-4-hexylthiophene-Based Wide Bandgap Donor Polymer for 10.9% Efficiency Eco-Friendly Nonfullerene Organic Solar Cells
作者:Jeong Eun Yu、Sung Jae Jeon、Jun Young Choi、Yong Woon Han、Eui Jin Ko、Doo Kyung Moon
DOI:10.1002/smll.201805321
日期:2019.3
Nonfullerene organic solar cells (NFOSCs) are attracting increasing academic and industrial interest due to their potential uses for flexible and lightweight products using low‐cost roll‐to‐roll technology. In this work, two wide bandgap (WBG) polymers, namely P(fTh‐BDT)‐C6 and P(fTh‐2DBDT)‐C6, are designed and synthesized using benzodithiophene (BDT) derivatives. Good oxidation stability and high
非富勒烯有机太阳能电池(NFOSC)由于使用低成本卷对卷技术可用于柔性轻量产品,因此吸引了越来越多的学术和工业兴趣。在这项工作中,使用苯并二噻吩(BDT)衍生物设计和合成了两种宽带隙(WBG)聚合物,即P(fTh-BDT)-C6和P(fTh-2DBDT)-C6。通过将氟和烷基链同时引入一个噻吩(Th)单元,可以实现良好的氧化稳定性和高溶解度。固态P(fTh-2DBDT)-C6膜具有WBG光学吸收,合适的边界轨道能级和强大的π-π堆积效应。此外,P(fTh-2DBDT)-C6在卤代和非卤代溶剂中均显示出良好的溶解性,表明其适合作为NFOSC的供体聚合物。P(fTh-2DBDT)-C6:3,9-bis(2-亚甲基-(3-(1,1-二氰基亚甲基)-茚满酮))-5,5,11,11-四(5-己基噻吩基)-二硫代[2,3-d:2′,3′-d']-s-茚满[1,2-使用氯苯/ 1,8-二碘辛烷(CB /