Performance Study Of Rare Earth Doped Gadolinium Oxysulfide Luminescence Material Synthesized By The Coprecipitation Method

Oxysulfide up-conversion luminescence materials have broad application prospects. Coprecipitation method is adopted to synthesize Gd2O2S:Er3+, Yb3+, which is sensitive to980nm,1064nm and1550nm, respectively. The effect of precipitating agent category, concentration, pH value, rare earth doping concentration, fluxing agent category, fluxing agent content, sintering temperature and duration time on the luminescence properties is studied. And the experiments is optimized through orthogonal experiment design method to find the optimal formula. The data which are not appearing in the orthogonal table are tested again. To find out the best experimental conditions of coprecipitation synthesize Gd2O2S:Er3+,Yb3+up-conversion phosphor powder lay a foundation for the future work of this aspect.When stimulate the Gd2O2S:Er3+,Yb3+up-conversion fluorescent powder using different wavelength of Laser, the PL peak wavelengths are at about530nm,550nm and660nm,respectively. The green light emitting of the sample is derived from the electronics of2H11/2and4S3/2states of Er3+ion transform to4I15/2ground state energy level, and the red light emitting is derived from the electronics of4F9/2states of Er3+ion transform to4I15/2ground state energy level. The sample of Gd2O2S:Er3+,Yb3+up-conversion luminescence which is synthesized by coprecipitation method belonged to the hexagonal system from XRD analysis and the rare earth ions doped rarely have no effect on the matrix structure. Using scanning electron microscopy (SEM) to test and analysis, the result finds that the average particle size of the Gd2O2S:Er3+,Yb3+sample is around1um,...