Synthesis, photophysical and photovoltaic properties of conjugated polymers containing fused donor-acceptor dithienopyrrolobenzothiadiazole and dithienopyrroloquinoxaline arenes

Yen-Ju Cheng*, Yu Ju Ho, Chiu Hsiang Chen, Wei Shun Kao, Cheng En Wu, So Lin Hsu, Chain-Shu Hsu

*此作品的通信作者

研究成果: Article同行評審

52 引文 斯高帕斯(Scopus)

摘要

We have developed two nitrogen-bridged pentacyclic donor-acceptor dithienopyrrolobenzothiadiazole (DTPBT) and dithienopyrroloquinoxaline (DTPQX) arenes where the two outer electron-rich thiophene moieties are covalently fastened with the central electron-deficient benzothiadiazole and quinoxaline cores by two nitrogen bridges. These rigid and coplanar DTPBT and DTPQX building blocks were copolymerized with fluorene (F), carbazole (C) and cyclopentadithiophene (CPDT) units via Suzuki or Stille coupling polymerization to afford six new alternating copolymers PFDTPBT, PCDTPBT, PCPDTDTPBT, PFDTPQX, PCDTPQX and PCPDTDTPQX, respectively. The nitrogen bridges not only planarize the structure to induce stronger intermolecular π-π interaction but also play an important role in determining the electronic and photophysical properties of the polymers. The device based on PFDTPQX/PC 71BM (1:4, w/w) exhibited a open-circuit voltage (V oc) of 0.72 V, a short-circuit current (J sc) of 8.62 mA/cm 2 and a FF of 0.55 leading to a decent power conversion efficiency (PCE) of 3.40% due to the lower-lying HOMO energy level, and the highest hole-mobility of PFDTPQX.

原文English
頁(從 - 到)2690-2698
頁數9
期刊Macromolecules
45
發行號6
DOIs
出版狀態Published - 27 三月 2012

指紋

深入研究「Synthesis, photophysical and photovoltaic properties of conjugated polymers containing fused donor-acceptor dithienopyrrolobenzothiadiazole and dithienopyrroloquinoxaline arenes」主題。共同形成了獨特的指紋。

引用此