Synthesis and luminescence property of NaLa(MoO4)2∶Eu3+ spheres by microwave irradiation
1.School of Material Science and Engineering, Southeast University, Nanjing, Jiangsu 210096, China; 2.Suzhou Electrical
Apparatus Science Academy Co. Ltd, Suzhou, Jiangsu 215011, China; 3.School of Electronic Science and Engineering, Southeast
University, Nanjing, Jiangsu 210096, China
Abstract：Uniform NaLa(MoO4)2 powders with spherical shape were synthesized by microwave irradiation. The influence of CTAB concentration on the particle morphology was investigated, and the particle size was measured by laser particle size analyzer. The results show that the morphology and homogeneity of the spherical particles are improved by CTAB. The particle size distribution is very narrow with D50 of 0.854 μm when CTAB concentration is 20 mmol?L-1, and it is good for dense layer of phosphor on substrate. The sample structure and composition were determined by XRD, TEM and EDS. The results show that NaLa(MoO4)2 has pure tetragonal phase with polycrystalline nature, and no other impurity is detected. Room temperature photoluminescence measurement of NaLa(MoO4)2∶Eu3+ shows that the sample can be effectively excited by UV, near-UV and blue light, and gives strong red emission at 616 nm. The red phosphor can be potentially applied in light-emitting diodes.
2014, Vol. 35 
