1. Lab of Excited State Processes, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China 2. Graduate School of Chinese Academy of Sciences, Beijing 100039, China 3. Department of Physics, Dalian Maritime University, Dalian 116026, China
Abstract：A novel red phosphor α-Gd2(MoO4)3∶Eu was synthesized by conventional solid state reaction method with the starting materials: Gd2O3,MoO3 and Eu2O3. The effects of flux and Eu concentration on the crystal structure, morphology and luminescent properties of the phosphors were investigated. The results showed that non-agglomeration phosphors with regular morphology and fine size were produced after the mixture being calcined at 800 ℃ for 4h with 3% NH4F as flux. The main emission peak of the samples is at 613 nm. The excitation spectrum showed that this phosphor can be effectively excited by ultraviolet (UV)(395 nm) and blue (465 nm) light, nicely fitting in with the widely applied output wavelengths of ultraviolet or blue LED chips. The α-Gd2(MoO4)3 phosphor may be a good candidate phosphor for solid state lighting application.
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