Performance of dye-sensitized solar cells of perovskite sodium bismuth titanate layer and studying the effect of Fe-doped on the photovoltaic properties.

Perovskite-based DSSCs were manufactured using Sodium bismuth titanate (NBT) as a photoanode and their performance was extended studied by doping NBT perovskite with iron. The hydrothermal method was used to prepare pure NBT, and iron-doped NBT perovskite, which was deposited by spin coating on titanium oxide films previously prepared by screen printing. Pure and iron-doped NBT films were studied structurally, morphologically, and optically using X-ray diffraction, Field emission scanning electron microscope, photoluminescence spectra, and Fourier transform infrared. FESEM images showed some nanosheets appeared between agglomerated particles at the 8% Fe-doped NBT. The lead-free perovskite dye sensitized solar cell (DSSC) based on pure NBT showed highest conversion efficiency of 6.041%, highest external quantum efficiency, highest electron lifetime (2.17 s) and lowest ideality factor (3.52) compared to those DSSCs in which iron-doped NBT was used. This study proposes a nanoscale lead-free inorganic perovskite material that has been used in photovoltaic applications, and whose efficiency could be improved through future research.The current study was expanded to include studying the effects of photoresponse, response time and recovery timeof DSSCs based on Na_0.5Bi_0.5Fe_xTi_1−xO₃. [ABSTRACT FROM AUTHOR]