摘要： In this work, NaBi(WO4)2:Eu3+ red phosphors were synthesized by high temperature solid-state method. The XRD and Rietveld refinement were used to analyze the crystal structure, and the morphology was investigated by the SEM. Upon excitation with 395 nm, these phosphors exhibited intense red emission at 615 nm attributing to the 5D0→7F2 transition of Eu3+ ions. The optimal doping concentration of Eu3+ ions in NaBi(WO4)2:xEu3+ phosphors was x = 0.8, and the electric dipole-dipole interaction dominates the concentration quenching mechanism. The Judd–Ofelt intensity parameters (?2 and ?4) were determined to confirm the site asymmetry of Eu3+ ions in NaBi(WO4)2 host. Furthermore, the NaBi(WO4)2:0.8Eu3+ phosphor also possesses excellent thermal stability with the PL emission intensity still keep up about 88.2% at 423 K comparing with that at 303 K, meanwhile, the internal quantum efficiency (IQE) of it was measured to be 83.6%. The CIE chromaticity coordinate of NaBi(WO4)2:0.8Eu3+ sample was (0.656, 0.343), and the color purity of it was calculated to be as high as 95.8%. Based on the results above, the NaBi(WO4)2:Eu3+ phosphors are promising red components, which can be utilized in the applications of near-ultraviolet (NUV) pumped WLEDs.