2.6. Solar Cell Assembly
After sintering,
films were allowed to cool to 100 C then
immediately immersed in 0.3 mM N719 in ethanol. After 12 h they
were removed and rinsed in acetonitrile and dried in air. Each
sensitized electrode was sealed against a counter electrode on a
hot plate at 120 C using a hot-melt plastic frame (Solaronix,
Meltonix 1170, 25 mm thick) applying light pressure with a glass
rod. The assembled cell was
filled with electrolyte through two
holes in the counter electrode. The holes were then sealed using
hot-melt plastic and a thin glass cover slide. The exposed
conducting glass leads of each electrode were coated with copper
tape (3M) for improved electrical conductivity