| 초록 |
Benzo[1,2-b:4,5-b′]dithiophene (BDT) is the most promising electron donor material for use in high-performance PSCs. Its large planar π-conjugated structure promotes facile π−π stacking, improves the hole mobility, and facilitates the introduction of alkyl or aryl side chains that can be used to control the solubility and optical properties of the polymer. The use of isoindigo(iI) as a acceptor in conjugated systems taking advantage of the D-A approach for OPVs. Isoindigo has strong electron-withdrawing character due to its two lactam rings. Their broad absorption spectra, high extinction coefficients, and appropriate energy levels inspired us to modify their chemical structures and explore their PV performance further. In this study, we present the synthesis and detailed characterization of semiconductor which is prepared from the combination of the isoindigo unit with BDT moiety. The synthesized polymer is showed different optical, electrochemical and photovoltaic properties. |
