Synthesis and luminescent characteristics of phosphors based on phosphates and ree polyphosphates

For the synthesis of phosphors based on phosphates of rare earth elements LnPO4 (Eu, Eu+Y, Tb, Tb+Gd, Tb+Nd), Eu3PO7, Eu(PO3)3, Eu(PO3)3: Eu2+, Tb(PO3)3, La1-хTbхP3O9 (х = 0.05; 0.10; 0.20; 0.30; 0.40), La0,8Ce0,15Tb0,05PO4, La0,8Ce0,15Tb0,05(PO3), NaY1-хEuхP2O7 и NaY1-хTbхP2O7 (х = 0;0,025; 0,05; 0,075; 0,1) a low-temperature extraction-pyrolytic method is proposed. The compounds have been characterized by X-ray phase analysis, IR and luminescent spectroscopy. A comparative analysis of the spectral-luminescent characteristics of Eu3+ and Tb3+ ions in simple and doped phosphate phosphors was performed. It is shown that the luminescence intensity of Eu3+ and Tb3+ in phosphates increases in the presence of activator ions.