Análise e otimização da estabilidade de filmes finos de perovskitas sintetizados por spin-coating

Abstract

Ever since the photoelectrical properties of halide perovskites were studied, there was a soar of the application of such materials on a great variety of optoelectronic devices, such as LEDs, photodetectors and solar cells. Currently, there is a search for the optimization of these solar cells through the development and study of different perovskites as photoactive materials and through improvements on the fabrication of these cells. In general, PSCs – Perovskite Solar Cells are fabricated through the overlay of thin films of different materials, that can be made by various experimental techniques. One of these techniques is spin-coating, a process in which a fluid is deposited over a substrate and evenly spread through centrifugation. This work intends to detail the mechanisms of thin film formation through spin-coating and analyze the films fabricated this way through the use of Raman spectroscopy and X ray diffraction.