Translucent persistent luminescence glass matrix composite obtained by pressureless viscous sintering

Autor(es)

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

• Tipo de documento: Artigo Científico
• Fonte: MATERIALIA; v. 38, p. 6-pg., 2024-09-12.

Resumo

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)

• Processo FAPESP: 22/13267-4 - Controle de danos de raios-X e caracterização avançada por radiação Síncrotron em vitrocerâmicas transparente com luminescência persistente
• Beneficiário: Roger Gomes Fernandes
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 21/05603-1 - Estudos avançados de espectroscopias ópticas e de raios X para dominar os processos de transferência de carga em materiais luminescentes
• Beneficiário: Lucas Carvalho Veloso Rodrigues
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 21/08111-2 - Materiais conversores de luz à base de terras raras: marcadores luminescentes, sensores e amplificadores ópticos
• Beneficiário: Hermi Felinto de Brito
• Modalidade de apoio: Auxílio à Pesquisa - Temático