Cu2ZnSnS4(CZTS) Application in TiO2Solar Cell as Dye

Cu 2 ZnSnS 4 (CZTS), a quaternary semiconductor, is a promising absorber material for solar cell due to its abundance and low toxicity.In this study, a CZTS/TiO 2 solar cell was fabricated successfully to investigate its photovoltaic behavior.In this solar cell, CZTS acts as an absorber material to replace an organic or organometallic dye in TiO 2 dye-sensitized solar cell.This cell has an open circuit voltage of 631 mV under 1 Sun of 100 mW/cm 2 illumination.The internal resistance of CZTS/TiO 2 cell was also studied at different applied bias in dark using electrochemical impedance spectroscopy.A short diffusion length of electrons in this cell was found.