| Revista: | Revista mexicana de física |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000460932 |
| ISSN: | 0035-001X |
| Autors: | Mariscal Becerra, L1 Carmona Téllez, S2 Alarcón Flores, G2 Balderas Aguilar, J.U3 Vázquez Arreguín, R2 Murrieta, H1 Falcony, C2 |
| Institucions: | 1Universidad Nacional Autónoma de México, Instituto de Física, Ciudad de México. México 2Instituto Politécnico Nacional, Ciudad de México. México 3Instituto Politécnico Nacional, Centro de Investigación y de Estudios Avanzados, Ciudad de México. México |
| Any: | 2018 |
| Període: | Sep-Oct |
| Volum: | 64 |
| Número: | 5 |
| Paginació: | 447-455 |
| País: | México |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Analítico, teórico |
| Resumen en inglés | The effect of Li co-doping on the blue luminescence of Eu2+ doped (La-Al)2 O3 phosphors and its incorporation into poly (methyl methacrylate) PMMA films are reported. The phosphors were synthesized by a simple two-step process in which the (La-Al)2 O3 powders were obtained by an evaporation method, and the subsequent co-doping with Li+ and Eu2+ were made through a solid state reaction in a reductive atmosphere at 1250°C. The incorporation of those phosphors into PMMA matrix and the synthesis of films with thicknesses between 6 and 12 μm was made by drop-casting. The characteristic blue broad band emission centered at 440 nm associated with the 4f65d1→4F7 transition of Eu2+ ions (CIE coordinates 0.6731, 0.3343) was observed when these powders were excited with 297 nm light. These luminescence intensity was enhanced when Li+ was incorporated as co-dopant up to 320% with respect to those phosphors without Lithium. The luminescent characteristics of these phosphors were preserved when they were embedded into the PMMA films |
| Disciplines | Física y astronomía |
| Paraules clau: | Optica, Luminiscencia, Efecto Litio, Láminas compuestas de PMMA |
| Keyword: | Optics, Luminescence, Lithium effect, PMMA composite films |
| Text complet: | Texto completo (Ver HTML) Texto completo (Ver PDF) |
