Synthesis & PL, TL study of LaYPO4: Eu Phosphor

Y.S.Patil1, N.V.Poornachandra Rao2 and  K.V.R.Murthy3

1Applied Physics Department, MCT’S Rajiv Gandhi Institute of technology, Versova, Andheri (w), Mumbai-400053, India.
Department of Physics, VSR & NVR College, Tenali – 522 201, Guntur District, A.P., India.
Display Materials Laboratory, Applied Physics Department, Faculty of Technology  and Engineering, The M. S. University of Baroda, Vadodara-390001, India.



        The present paper reports the Photoluminescence (PL) of the LaYPO4 phosphor doped with, Eu with 0.5 mole percentage. The phosphors were synthesized using the standard solid state reaction technique and ground using mortar and pestle, fired at 1200oC for 3 hour in a muffle furnace at the rate of 5oC/min. The produced materials were analyzed by XRD, PL and TL. We have studied the effect of dopants on the Photoluminescence and Thermoluminescence properties of LaYPO4 phosphor. Under the excitation of 254 nm wavelength, PL properties of the samples using Spectrofluorophotometer at room temperature. PL emission of doped LaPO4 phosphor shows peaks at 589, 596, 614 and 622nm .

Keywords: Photoluminescence; XRD; phosphor rare-earth ions; solid state reaction technique;




International eJournal of Mathematics and Engineering

Volume 3, Issue 4, Pages:  1756 - 1761