Investigação das propriedades ópticas de Perovskitas de CsPbI3 e íons de Er3+ em sistema vítreo

Abstract

The present study has as its main subject synthesizing and describing ions Er3+ optical proprieties and vitreous matrix in CsPbI3 in Peroviskita nanocrystals. UV-Vis Optical Absorption Spectroscopy and Photoluminescence performed the optical proprieties analysis of nanocrystals. As a result, observed experimental evidence for energy transfer as of nanocrystals of CsPbI3, synthesized by de fusion method, for Er3+ ions soaked in vitreous systems (SBNAPC: SiO2-B2O3–NaI–Al2O3–PbI2–Cs2CO3). May be observed in radioactive energy transfer and non-radioactive are in the photoluminescence spectrum, between the Peroviskita nanocrystals and ions Er3+ levels, in which emission band valleys correspond precisely to the ions of Er3+ energy absorption. The results presented can inspire a deeper investigation into similar systems so they can reach potential laser devices and applications. Beyond that, the vitreous matrix in syntheses ensures the nanocrystal's protection from chemical attacks in a hostile environment, assuring longterm stability once these are easily oxidated or inactivated in the presence of oxygen, humidity, or light irradiation.