| 초록 |
Recently, several models have been proposed to estimate the polymer performance in solar cells. Poly(2,7-carbazole) derivatives are excellent potential candidates for solar cells. Poly(2,7-carbazole) derivatives exhibit low highest occupied molecular orbital (HOMO) energy levels, resulting in air-stable polymers and, possibly, high open circuit potential (VOC) values. These materials exhibit good hole mobility values. Like poly(2,7-fluorene) derivatives, the absorption spectrum of poly(2,7-carbazole) derivatives can be easily modified through copolymerization for optimal solar spectral match. We synthesized copolymers of 2,7-carbazole-based moieties. The structures and properties of copolymers were characterized using 1H NMR, 13C NMR, GPC, TGA, DSC, UV-visible spectroscopy, and cyclovoltammetry(CV). |
