Abstract
Eu3+ -doped 6LaPO4 -3La3 PO7 -2La7 P3 O18 red luminescent phosphors were synthesized by co-deposition and high-temperature solid-state methods and its polyphase state was confirmed by X-ray diffraction analysis. Transmission electron microscopy showed the grain morphology as a mixture of rods and spheres. Luminescence properties of the phosphor were investigated and its red emission parameters were evaluated as a function of Eu3+ concentration (3.00-6.00mol%). Excitation spectra of 6LaPO4 -3La3 PO7 -2La7 P3 O18 :Eu3+ showed strong absorption bands at 280, 395, and 466nm, while the luminescence spectra exhibited prominent red emission peak centred at 615nm (5 D0 →7 F2 ) in the red region. CIE chromaticity coordinates of the 6LaPO4 -3La3 PO7 -2La7 P3 O18 :5%Eu3+ phosphor were (0.668, 0.313) in the red region, and defined its potential application as a red phosphor.
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