Abstract: | Eu3+‐doped 6LaPO4–3La3PO7–2La7P3O18 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 (3.00–6.00 mol%). Excitation spectra of 6LaPO4–3La3PO7–2La7P3O18:Eu3+ showed strong absorption bands at 280, 395, and 466 nm, while the luminescence spectra exhibited prominent red emission peak centred at 615 nm (5D0→7F2) in the red region. CIE chromaticity coordinates of the 6LaPO4–3La3PO7–2La7P3O18:5%Eu3+ phosphor were (0.668, 0.313) in the red region, and defined its potential application as a red phosphor. |