Synthesis and optimization of properties of thin films of FAx(MA1-X)PbI3 grown by spin coating with perovskite structure to be used as active layer in hybrid solar cells

Abstract

This work report results concerning the effect that the substitution of the methylammonium cation by the formamidinium cation causes on the properties of FAx(MA1-x)PbI3 films synthesized by spin coating in one step. For that, it was conducted a study to establish the influence of the composition of the FAx(MA1-x)PbI3 films on their optical, structural and morphological properties, determined through spectral transmittance, atomic force microscopy and X-ray diffraction measurements. Correlating parameters of synthesis with results of the study of properties performed, we were able to get conditions to grow FAx(MA1-x)PbI3 films with improved optical gap, microstructure and morphology, what allows to think that this compound is suitable to be used as the active layer in hybrid solar cells.

Keywords

• chemical composition
• methylammonium cation
• formamidinium cation
• antisolvent treatment