Dye-sensitized Solar Cells Employing an Amorphous ZnSnO<sub>3</sub> Photoanode and the Effect of 4-<i>tert</i>-Butylpyridine in the Electrolyte on their Photovoltaic Properties

Dye-sensitized solar cells were fabricated using amorphous ZnSnO 3 as a photoanode material, and the effect of adding 4-tert-Butylpyridine (TBP) to the electrolyte on their photovoltaic properties was investigated.We confirmed that the solar cell generated power even when an electrolyte without TBP was used, and that the conversion efficiency was improved upon addition of TBP to the electrolyte up to a concentration of 1.0 mol dm -3 .Our best performing solar cell had an open circuit voltage of 0.616 V, a short circuit current density of 9.49 mA cm -2 , and a conversion efficiency of 4.14%.