from the conferences organized by TANGER Ltd.
An investigation of Eu and Dy doped yttrium aluminates/borates samples prepared by solid-state reaction in reduction/air atmosphere is presented. The structure of the synthesized samples was studied by powder X-ray diffraction. The XRD patterns show formulation of several crystalline phases - predominately non-reacted Al2O3, polymorph modifications of yttrium borate and yttrium orthoaluminates, which were identified and discussed. A photoluminescence analysis was used for observation of optical properties. The spectrum was characterized by 2D and 3D excitation emission graphs. The correlations between synthesis conditions, doping elements, the structure and optical properties of the studied samples are commented. Yttrium-based red powder phosphors have a potential for practical application in lightning industry and other optoelectronic devices.
Keywords: Yttrium aluminates, yttrium borates, rare earth, x-ray powder diffraction, luminescence© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.