TY - JOUR ID - 14475 TI - Photoluminescence Properties Of Eu3+, Ce3+ Doped LaPO4 Phosphors JO - Advanced Materials Letters JA - AML LA - en SN - 0976-3961 AU - Parvin Shaik, Niyaz AU - V. Poornachandra Rao, N. AU - V. R. Murthy, K. AD - Y1 - 2014 PY - 2014 VL - 5 IS - 12 SP - 722 EP - 727 KW - photoluminescence KW - XRD KW - SEM KW - FTIR KW - Phosphor KW - rare KW - earth ions KW - solid state reaction technique KW - CIE KW - particle size analysis DO - 10.5185/amlett.2014.5572 N2 - Pure LaPO4 and LaPO4: Eu (0.5 mol %) Ce (0.5 mol %) phosphors were synthesized by the solid-state reaction method. X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), photoluminescence (PL) spectra and the particle size analysis were used to characterize these samples. The XRD results reveal that the synthesized LaPO4:Eu (0.5 mol%) Ce (0.5 mol%) phosphors are well crystalline and assigned to the monoclinic structure with a main (120) diffraction peak. The calculated crystallite size of pure LaPO4 and LaPO4:Eu, Ce phosphors were 67.6nm and 64nm respectively. Upon excitation at 254nm wavelength, the emission spectrum of pure  LaPO4 phosphor emits a maximum intensity peak at 470 (blue) nm. In the emission spectrum of LaPO4:Eu 3+ Ce 3+ phosphor, the low contributions of the red (613nm) 5D0-7F2 emissions and the high intensity of the orange-red (589nm)5D0-7F1 emission results in high color purities.The most intense emissions appearing in the 580-620nm region is responsible for the strong orange-red luminescence observed in the Eu,Ce doped LaPO4 phosphor whose CIE colour coordinates are x = 0.57 and y = 0.43.Thus the prepared phosphors can be used as an orange-red emitting material in the field of illuminations and display devices. UR - https://aml.iaamonline.org/article_14475.html L1 - https://aml.iaamonline.org/article_14475_f73c9f53769e00a256a1e911b1c31a25.pdf ER -