The TiO2 film electrode was prepared by screen printing the TiO2 paste on the FTO glass followed by
sintering at 500 °
C for 30 min and cooling to 80 °
C. Then, the TiO2 film electrode was sensitized by immersion into
a 0.3 mM solution of N719 dye in anhydrous ethanol at room temperature for 24 h. The Pt counter electrode was
prepared by dropped 36Pl of 7mM H2PtCl6 in acetylacetone on FTO glass and also preheated to 385 º
C for 30 min
allowed to cool down to 110 º
C. A single hole (ca. 0.5 mm diameter) was drilled in the Pt electrode to allowed for
electrolyte filling. Finally, the DSSCs were fabricated by the assembly of the working electrode and counter
electrode with thermoplastic film (Surlyn 30Pm) and the internal spacer between the electrodes was filled with the
prepared electrolytes as presented in Figure 1.