We have successfully prepared the nanocomposite gel electrolytes employed in DSSCs. It is found that Tm of
gel electrolytes was slightly dropped with addition of TiO2 and SiO2 nanoparticles. While the thermal stability of
blend polymers was also slightly improved with addition of nanoparticles higher than 1wt%. The efficiency of
DSSCs employed 10wt% PVDF-HFP/PEO (8:2wt%) gel showed the efficiency of 3.26% which lower than that of
ILE. Moreover, the efficiencies of DSSCs using TiO2 and SiO2 nanocomposite gels was decreased to be 2.71% and
3.03%, respectively. This could be due to the more retarder of ionic species in higher viscosity of polymer gels after
addition of nanoparticles into polymer gel electrolyte and the phase separation between nanoparticle and polymer
matrix.