Optical properties of rare earth doped Potassium Yttrium Borate

Potassium Yttrium Borate K₃YB₆O₁₂ have been prepared using solid state synthesis method. Polycrystalline powder of Potassium Yttrium Borate K₃YB₆O₁₂ was obtained by two step process. Initially at 400⁰ C, for four hours sample was sintered. Grounding and crushing of sample was done, as it cooled to room temperature. Further heating at 800⁰ C for 20 h resulted in polycrystalline sample. Crystal structure of prepared sample was determined using X-ray analysis. Crystal structure parameters and volume of unit cell was determined using X-ray analysis data. K₃YB₆O₁₂ was doped with 1, 2, 5 and 10 mol.% of rare earth elements Ce and Tb. PL intensity was measured using a spectro-fluorometer. PL intensity was measured for these different dopants and emission was found in Blue and Green portion of the spectrum. Surface morphology was studied using SEM and EDS.