| 초록 |
A series of new π-conjugated metal-free organic dyes (TBC-S, TBC-D and TBC-T) comprising triphenylamine (TPA) moieties as the electron donor and benzothiadiazole moieties as the electron acceptor/anchoring groups were designed and synthesized for application in dye-sensitized solar cells (DSSCs). Triphenylamine units are bridged to benzothiadiazole with single(S), double(D) and triple bonds(T) in different derivatives. Their structure-property relationship has been investigated through the photophysical and photoelectrochemical studies. Under the photovoltaic performance measurement, a maximum photo-to-electron conversion efficiency of 5.71% was achieved with the DSSC based on dye TBC-S (Voc=582mV ,Jsc=15.01μ/cm2, ff=0.65) under AM1.5 irradiation of 100mWcm-2. |
