Synthesis of thienoselenadiazole-containing conjugated copolymers and their application in polymer solar cells

Abstract

We have successfully synthesized the thienoselenadiazole unit through the condensation reaction between thiophene diamine and SeO2 and applied the thienoselenadiazole unit for D-A-conjugated polymers. The thienoselenadiazole- based polymers, PBDTDTTSe and PDTSDTTSe, exhibit good solubility in common organic solvents, good thermal stability and deep HOMO levels. The solar cells based on thienoselenadiazole-containing polymers gave high Voc. Further improving of the light-absorption properties of the thienoselenadiazole- containing polymers to achieve high Jsc and high PCEs is currently underway. © 2012 The Society of Polymer Science, Japan (SPSJ) All rights reserved.