Abstract
We synthesized Dy3+ doped SrLaGa3O7 phosphors via a sintering process at 1350 °C under atmosphere. The X-ray diffraction data demonstrate that they have the pure tetragonal phase, meaning the successful substitution of Dy3+ in SrLaGa3O7 host. Monitoring at 572 nm, Dy3+ doped SrLaGa3O7 phosphors show a series of excitation bands within 275–475 nm. Exciting at 342 nm, Dy3+ doped SrLaGa3O7 phosphors show emission bands in the range of 450–700 nm. The emission bands respectively locate in blue, yellow and right light regions, which respectively correspond to 4F9/2 → 6H15/2, 4F9/2 → 6H13/2 and 4F9/2 → 6H11/2 transitions of Dy3+. The concentration quenching is induced by dipole-dipole interactions among neighboring Dy3+ ions. There is only one peak in the thermoluminescence glow curves of Dy3+ doped SrLaGa3O7 phosphors, indicating that there is only one type of trap center in these phosphors. The trap depth is calculated to be 0.754 eV.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
