Effect of substituent groups on quinoxaline-based random copolymers on the optoelectronic and photovoltaic properties
By Cevher, Sevki Can; Hizalan, Gonul; Temiz, Cansel; Udum, Yasemin Arslan; Toppare, Levent; Cirpan, Ali
Published in Polymer
NULL
2016
Abstract
Abstract In this study, three low band gap donor-acceptor (D-A) type quinoxaline-based random copolymers were synthesized. The effect of varying substituent groups on quinoxaline groups on optoelectronic properties and the performance of bulk-heterojunction polymer solar cells was investigated. Electrochemical and optical studies indicate that these copolymers are promising materials for both electrochromic and polymer solar cells applications. Two random polymers were found as excellent candidates for {NIR} electrochromic devices owing to their 60% and 94% optical contrast values respectively in {NIR} region with less than 1 s switching times. Polymer solar cells were constructed using the copolymers as the donor components together with {PC71BM} as the acceptor in the active layer. Among all, the highest {PCE} was reported as 2.13%.
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