초록 |
Low bandgap radom polymers based on D-A complex, containing three different components were synthesized. 3-hexylthiophene and quaternary thiophene were employed as electron donor, pyrido pyrazine was applied as electron acceptor, respectively. We compared the absorption spectra, electrochemistry, morphologies, hole and electron mobility and photovoltaic properties of the conjugated polymers. Without extensive optimization work, the photovoltaic performances of the polymers were achieved to be 2.04 % for PTPPPP and 1.94 % for PQTPPPP and high FFs were obtained. |