Synthesis and Characterization of Conjugated Low Band-Gap Terpolymers Incorporating Carbazole for Photovoltaic Application

KW Kim, H Na, WW So, SC Yoon…

Index: Kim, Ki-Won; Na, Hyungjun; So, Won-Wook; Yoon, Sung Cheol; Shin, Won Suk Journal of Nanoscience and Nanotechnology, 2012 , vol. 12, # 5 p. 4279 - 4283

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Abstract

A series of photoactive conjugated low band-gap copolymer (CPSB) and terpolyemrs (TPSBCz-n, n= 1 to 4) based on N-alkyl carbazole, 4, 4′-dialkyl dithienosilole, and bezothiadiazole were synthesized. The copolymer and terpolymers were built with the fraction of the carbazole unit varied for 0, 2.5, 5, 10 and 25 mol%. Among the mixtures, the composition of 25 wt% of terpolymer bearing 10 mol.% of the carbazole unit, TPSBCz-3, ...