| Full text | |
| Author(s): |
Fernandes, Roger Gomes
;
Mattos, Elaine de Andrade
;
da Silva, Victor Murilo Poltronieri
;
van der Heggen, David
;
Smet, Philippe F.
;
Manzani, Danilo
;
Teixeira, Veronica de Carvalho
;
Rodrigues, Lucas Carvalho Veloso
Total Authors: 8
|
| Document type: | Journal article |
| Source: | MATERIALIA; v. 38, p. 6-pg., 2024-09-12. |
| Abstract | |
Translucent persistent luminescence glass matrix composites (PeL-GMCs) were successfully obtained for the first time using a pressureless viscous sintering method with silicate glass as the host material. Initially, persistent luminescence microparticles (PeL-MPs) of SrAl2O4: Eu2+; Dy3+ were prepared by microwave-assisted synthesis under a reducing atmosphere. To obtain persistent luminescent glass matrix composites, 1 wt. % of these particles were mixed with soda-lime-silicate glass beads and pressed into pellets. Subsequently, the disk-shaped samples were heat-treated through pressureless viscous sintering. Despite some material porosity, the PeL-GMCs exhibited translucency and prolonged persistent luminescence (similar to 12 min). Additionally, we noted excellent compatibility between the PeL-MPs and the glass host, since no chemical interaction was found, as verified by optical microscopy, energy dispersive X-ray (EDX) mapping analysis and cathodoluminescence (CL) in SEM. Furthermore, the afterglow intensity of the particles was maintained after the preparation of materials. (AU) | |
| FAPESP's process: | 22/13267-4 - X-ray damage control and Synchrotron advanced characterization of persistent luminescence transparent glass ceramics |
| Grantee: | Roger Gomes Fernandes |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 21/05603-1 - Follow the charge: using advanced optical and X-ray spectroscopy to master charge transfer processes in phosphors |
| Grantee: | Lucas Carvalho Veloso Rodrigues |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 21/08111-2 - Development of rare earth based light converters: luminescent markers, optical sensors, and amplifiers |
| Grantee: | Hermi Felinto de Brito |
| Support Opportunities: | Research Projects - Thematic Grants |