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Research about mesoporous TiO 2 as an electron transport layer in perovskite solar cell has been done to obtain the best fabricated cell’s performance. In this research, the concentrations of opaque and transparent TiO 2 nanoparticle were varied, in order to optimize the TiO 2 mesoporous electron transport layer in FTO/CL-TiO 2 /MS-TiO 2 /Perovskite/P3HT/Ag perovskite-based solar cell. Morphological, optical, and electrical characteristics of TiO 2 layers were investigated using scanning electron microscopy (SEM), four-point probe (FPP), and UV-Vis spectroscopy. The influences of those characteristics in solar cell performance were analyzed by using illumination of sun simulator with a light intensity of 500 W/m 2 . The results showed that transparent TiO 2 has a higher conductivity and transmittance compared to the opaque TiO 2 . The concentration of TiO 2 solutionin1:17 ratio resulted in higher electrical performance in both the transparent and opaque TiO 2 layer. The best perovskite solar cell performance with PCE of 0.37% was achieved from the sample using TiO 2 transparent layer with a concentration of 1:7 ratio.

Optimization of Titanium Dioxide Nanoparticles in Mesoporous Electron Transport Layer Perovskite Solar Cell