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Investigation of synthetic routes for the preparation of Y2BaZnO5 matrix doped with rare earth ions for use in optical devices

Grant number: 16/15789-7
Support type:Scholarships in Brazil - Scientific Initiation
Effective date (Start): September 01, 2016
Effective date (End): December 31, 2018
Field of knowledge:Physical Sciences and Mathematics - Chemistry - Inorganic Chemistry
Principal researcher:Ana Maria Pires
Grantee:Bárbara Sprocati
Home Institution: Faculdade de Ciências e Tecnologia (FCT). Universidade Estadual Paulista (UNESP). Campus de Presidente Prudente. Presidente Prudente , SP, Brazil

Abstract

Materials containing rare earth ions have been highlighted due to their photoluminescent properties and therefore spectroscopic characteristics that make them excellent candidates for using in imaging devices, lighting, communications systems, solar cells, biosensors, among others. This project proposes the investigation of different synthetic routes for phosphors production using Y2BaZnO5 as the matrix and Er3 +, Yb3 + and Eu3 + as the activator ions, in the individual and combined doping. Initially, hydrothermal synthesis will be tested varying temperature, time and pH; then the modified Pechini method and sol-gel route will be applied, the latter two based on conditions and parameters already in development in the research group, to which the implications of the different synthesis can be evaluated. It is also an objective to elect, among the syntheses carried out, what is the best one to yield the best phosphors. Therefore, the first phosphors to be produced will be doped only with Eu3+ in order to act as a pattern system from which it will be possible to make comparisons to select improved synthesis conditions resulting in optical, structural and morphological properties suitable for phosphor's applications.

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