Abstract
A series of Dy3+-doped Ga2O3 powders were prepared via a simple hydrothermal reaction method, conducted without the use of any surfactants at varying initial pH. X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Photo-Luminescence (PL), UV–Vis–NIR Diffuse Reflectance Spectroscopy (DRS), Electron Probe Micro-Analysis (EPMA) and WDS/EDS were employed to characterize the synthesized powders. The influence of starting solution pH on the growth process of the GaOOH particles and on the host-sensitized luminescence of the Dy3+:Ga2O3 powders were investigated in detail. It is revealed that the active energy transfer processes can be influenced by variation of the Dy3+ concentration, and that a starting solution pH value of 8 is optimal for maximizing Dy3+ incorporation into the Ga2O3 lattice. This work presents a method to produce Dy3+:Ga2O3 with tunable UV-pumped emission, and provides evidence that white emission can be achieved through careful control of dopant concentration, which makes the material attractive for solid state UV pumped-white emission applications.
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.
