Jarosz Tomasz, Kepska Kinga, Ledwon Przemyslaw, Procek Marcin, Domagala Wojciech, Stolarczyk Agnieszka
Department of Physical Chemistry and Technology of Polymers, Silesian University of Technology, 9 Strzody Street, 44-100 Gliwice, Poland.
Department of Inorganic Chemistry, Analytical Chemistry and Electrochemistry, Silesian University of Technology, 6 Krzywoustego Street, 44-100 Gliwice, Poland.
Polymers (Basel). 2019 Jan 24;11(2):205. doi: 10.3390/polym11020205.
A type of graft copolymer based on polysiloxane and regioregular poly(3-hexylthiophene) (P3HT) has been synthesised and its properties have been studied alongside those of its parent conjugated polymer-regioregular P3HT. Electrochemical analysis has revealed more significant changes in conformation of the copolymer film than was observed for P3HT. UV-Vis-NIR spectroelectrochemical investigation provided evidence of improved doping reversibility of the copolymer, despite its marginally increased band gap, as also confirmed by electroconductometric analysis. Evidence has been shown, indicating that polaron mobilities in both P3HT and the copolymer are higher than those of bipolaronic charge carriers, even though both systems exhibit standard doping/dedoping patterns. The grafted copolymer was tested in bulk heterojunction solar cells. Preliminary studies show a great potential of these polymers for application in photovoltaics. Power conversion efficiency of up to 2.46% was achieved despite the dilution of the P3HT chains in the copolymer.
一种基于聚硅氧烷和区域规整聚（3-己基噻吩）（P3HT）的接枝共聚物已被合成，并对其性能以及母体共轭聚合物——区域规整P3HT的性能进行了研究。电化学分析表明，与P3HT相比，共聚物薄膜的构象变化更为显著。紫外-可见-近红外光谱电化学研究提供了证据，证明共聚物的掺杂可逆性有所改善，尽管其带隙略有增加，电导率分析也证实了这一点。有证据表明，尽管这两个体系都呈现出标准的掺杂/去掺杂模式，但P3HT和共聚物中的极化子迁移率都高于双极化子电荷载流子的迁移率。对接枝共聚物在体异质结太阳能电池中进行了测试。初步研究表明，这些聚合物在光伏应用方面具有巨大潜力。尽管共聚物中P3HT链被稀释，但仍实现了高达2.46%的功率转换效率。
