Photoluminescence of Ca10V6O25:Eu3+: A theoretical and experimental approach

Author(s)

Teixeira, Mayara M. ; Pinatti, Ivo M. ; Laranjeira, Jose A. S. ; Fabris, Guilherme S. L. ; Teodoro, Marcio D. ; Rosa, Ieda L. V. ; Simoes, Alexandre Z. ; Andres, Juan ; Sambrano, Julio R. ; Longo, Elson

• Document type: Journal article
• Source: Journal of Alloys and Compounds; v. 980, p. 10-pg., 2024-01-30.

Abstract

Ca10_xV6O25:xEu (x = 0%, 0.5%, 1%, 2%, 4%, and 8%) samples were synthesized by the microwave-assisted hydrothermal method at low temperature and short time. The corresponding structures were investigated by X-ray diffraction with Rietveld refinement, Raman spectra, and field emission scanning electron spectroscopy. Eu3+ cations incorporated in Ca10V6O25 provoke a structural disorder with concomitant changes in the morphology. In order to complement and rationalize the structural and electronic effects, computational simulations via density functional theory were employed to rationalize the structural and electronic effects on the constituent clusters of Ca10V6O25 after the Eu3+-doping process. The photoluminescence emission spectra showed characteristic f -f transitions ascribed to Eu3+ cations and broadband related to Ca10V6O25. Besides, the matrix-supported a higher percentage of 8% without the quenching effect. These results indicate the potential applications of the obtained materials in optical devices. (AU)

• FAPESP's process: 22/03959-6 - Two-dimensional structures for energy storage and gas sensors: theory aimed at experimentalists and for scientific dissemination
• Grantee: Julio Ricardo Sambrano
• Support Opportunities: Regular Research Grants
• FAPESP's process: 13/18719-1 - Electronic carriers dynamics in semiconductor nanostructures
• Grantee: Marcio Daldin Teodoro
• Support Opportunities: Research Grants - Young Investigators Grants
• FAPESP's process: 14/19142-2 - Characterization and processing of semiconductor nanostructures and application as devices
• Grantee: Gilmar Eugenio Marques
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 19/08928-9 - Modeling and simulations of porous inorganic nanotubes functionalization
• Grantee: Julio Ricardo Sambrano
• Support Opportunities: Regular Research Grants
• FAPESP's process: 13/07296-2 - CDMF - Center for the Development of Functional Materials
• Grantee: Elson Longo da Silva
• Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC
• FAPESP's process: 19/25944-8 - Femtosecond and nanosecond laser irradiation of Ag2SeO4 and Ag2SeO3 compounds and its theoretical study
• Grantee: Ivo Mateus Pinatti
• Support Opportunities: Scholarships abroad - Research Internship - Post-doctor
• FAPESP's process: 19/03722-3 - Evaluation of the Theoretical, Structural and Morphological Properties of Selenium and Silver Nanomaterials for Photoluminescent and Biological Application
• Grantee: Ivo Mateus Pinatti
• Support Opportunities: Scholarships in Brazil - Post-Doctoral