Cerium-based phosphors: blue luminescent properties for applications in optical displays |
| |
Authors: | Janaína Gomes Osvaldo Antonio Serra |
| |
Affiliation: | 1.Laboratório de Terras Raras – Departamento de Química – Faculdade de Filosofia Ciências e Letras de Ribeir?o Preto,Universidade de S?o Paulo,Ribeirao Preto,Brasil |
| |
Abstract: | In this paper, we describe the blue photoluminescence (PL) observed in the multi-component oxosalt phosphor GdVO4:Ce3+. Different doping concentrations (0.25–1 mol%) and heat treatment (900–1100 °C) were used to evaluate which conditions would
lead to the most suitable blue phosphor for optimal display performance. The cerium doping concentration influences the profile
of the emission spectrum (broad peak at 412 nm under UV excitation at 330 nm), as reflected on the values of chromaticity
coordinates. On the basis of luminescent properties, we can conclude that, among the phosphors prepared in this work the most
adequate for a blue display is the one obtained via the combustion method using glycine as fuel, a 0.50 mol% cerium doping
concentration, and heat treatment at 1000 °C. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|