Hellio Barbosa

Tuning Luminescence of Eu3+ -Doped Nanoparticles Through Thermal Treatment Role: Lead Researcher & Spectroscopy Analyst | University of Ottawa Designed and executed an emission spectroscopy study of Al(OiPr)3:Eu3+ nanoparticles annealed from 300 to 900 °C. The thermal process enabled control over crystal field environments, directly affecting peak emission intensity and profile. These results supported the development of optical sensors and phosphor-based teaching materials. Emission spectra of Eu3+ in Al(OiPr)3 annealed at varying temperatures, showing characteristic transitions. Key finding: Optimal luminescent performance observed at 600 °C, balancing crystallinity and phase purity. Applications:   Used as teaching material in spectroscopy labs Supports development of low-cost optical thermometers and lanthanide-based probes