LAUSR

Abstract In this work, we study the evolution of luminescence properties and structural as a function of Lu/Y substitution on Ce3+-doped orthosilicate yttrium-lutetium (Lu1-xYx)2SiO5 elaborated by Sol-Gel method. This study is realized with different concentrations of yttrium (x = 5, 10, 15, 20 mol%) and fixed cerium concentration (1 mol%) in order to determine, if possible, the best atomic percentage of the yttrium atom leading to a pure phase and intense luminescence without losing the density of the LSO material. The samples were annealed at the same temperature of 1200 °C. X-ray diffraction, SEM electron scanning microscopy morphology and PL photoluminescence are used for the structural and optical analyzes of these samples.