Abstract :
Three organic dyes XS24–26 containing N,N-dimethylaniline and butoxybenzene have been designed, synthesized and applied in the
dye-sensitized solar cells (DSSCs). The influence of secondary electron-donating groups on the performance of DSSCs is discussed. The
dimethylaniline is beneficial to extend absorption spectrum, whereas butoxybenzene is useful to suppress electron recombination. XS26
containing butoxybenzene and thiophene unit gives the highest power efficiency g of 5.67%, with a JSC of 12.36 mA cm 2, VOC of
680 mV, and ff of 0.67.
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