Preparation and characterization of TiO2 working electrode and counter electrode for dye sensitized solar cell

The power conversion efficiency (%PCE) of DSSC devices can be improved by development of novel sensitizer which have good photovoltaic characteristic. This research has focused on the optimization condition for fabrication of dye-sensitized solar cell. A 30 µm sealant thickness, 11 µm TiO2 film thicknesses, 8 µg/cm2 platinum loading, TiCl4 treatment and device masking were applied to obtain the good photovoltaic characteristic of DSSC devices. This method was applied to evaluated photovoltaic characteristic of novel organic dye.
The photovoltaic properties of DSSC device based on TPA (2D-D-p-A) and DPA (D-D-p-A) organic dyes were investigated. The Jsc and %PCE of DSSC devices increased when increased the carbazole electron donor unit. The bathochromically red shift and broad extended the IPCE spectra were observed when extend the conjugate lengths with thiophene unit. The DSSC device based on DPA3 and TPA3 dye exhibited the %PCE of 76% and 84%, respectively, particularly DSSC devices base on CCT3A dye, which 94% compared with the standard N3 dyes.