Abstract
Cs2SnI6 is an inorganic lead-free perovskite variant which is air and thermal stable and its application in the third generation of photovoltaic devices is undergoing rapid expansion over the past few years. This paper presents a fabrication of dye-sensitized solar cell (DSSC) with the incorporation of Cs2SnI6 perovskite in the active layer of N-719 dye. The absorbance spectra of N-719 dye on TiO2 mesoporous layer is found to increase by the addition of 2 wt% and 3 wt% of Cs2SnI6 in N719 dye in comparison to the reference of N-719 dye leading the role of Cs2SnI6 as photon absorber in the devices. Our fabricated DSSC device reveals a photocurrent enhancement from 6.36 mA/cm2 to 12.87 mA/cm2 by the addition of 3 wt% of Cs2SnI6, along with the enhancement of power conversion efficiency from 1.71% to 3.94%.
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