| Texto completo | |
| Autor(es): |
Chacaliaza-Ricaldi, J.
;
Rivera, V. A. G.
;
Clabel, H. J. L.
;
Pinto, I. C.
;
Messaddeq, Y.
;
Marega Jr, E.
Número total de Autores: 6
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Materials Research Bulletin; v. 196, p. 6-pg., 2026-03-01. |
| Resumo | |
The integration of Era+-doped nanostructures into polymeric matrices represents a promising avenue for the development of next-generation photonic devices. However, achieving homogeneous dispersion and efficient optical activation of these nanomaterials within thin films remains a challenge, which limits their practical use in applications such as integrated quantum photonics. In this work, we address this gap by embedding Era+- doped nano-tellurite glasses into poly(methyl methacrylate) hybrid thin films, combining the high refractive index and up-conversion capabilities of nanoglasses with the flexibility and processability of polymer matrices. The fabrication approach involves the mechanical grinding of bulk tellurite glass to nanoglasses (similar to 300 nm), followed by uniform dispersion in a polymethyl methacrylate solution and deposition via spin coating. The surface morphology and distribution of the nanoglasses were evaluated by Scanning Electron Microscopy and Atomic Force Microscopy. Radiative emission characterization was performed using fluorescence confocal microscopy at three excitation wavelengths (405, 800, and 980 nm), revealing the typical visible up-conversion emission bands of Era+ ions. Excitation at 980 nm yielded the strongest emission, followed by 800 nm, while 405 nm was significantly less efficient. Notably, enhancement of the green emission from Era+ ions was observed, which we attribute to confinement effects within the nano-tellurite-glasses acting as optical nanocavities. In summary, this study demonstrates an effective strategy for integrating functional nanophotonic materials into polymer thin films and highlights the potential of nanoglasses as resonant nanocavities for enhancing up-conversion luminescence, paving the way for their application in advanced photonic and quantum technologies. (AU) | |
| Processo FAPESP: | 21/11484-5 - Geração de segundo harmônico e espalhamento hiper-Rayleigh em titanato de bário para aplicações fotônicas |
| Beneficiário: | José Luis Clabel Huamán |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |
| Processo FAPESP: | 23/12143-2 - Integração de dispositivos fotônicos-plasmônicos |
| Beneficiário: | Victor Anthony Garcia Rivera |
| Modalidade de apoio: | Auxílio à Pesquisa - Jovens Pesquisadores |
| Processo FAPESP: | 25/11911-1 - Integração de dispositivos fotônicos-plasmônicos |
| Beneficiário: | Victor Anthony Garcia Rivera |
| Modalidade de apoio: | Bolsas no Brasil - Jovens Pesquisadores |
| Processo FAPESP: | 23/08401-6 - Guias de onda plasmônicas baseadas em nanovidros dopados com Er3+ para aplicações em telecomunicações quânticas |
| Beneficiário: | José Yitzhak Aarón Chacaliaza Ricaldi |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |
| Processo FAPESP: | 13/07276-1 - CEPOF - Centro de Pesquisa em Óptica e Fotônica |
| Beneficiário: | Vanderlei Salvador Bagnato |
| Modalidade de apoio: | Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs |