Preparation And Characterization Of Y₂O₂S:Yb³⁺,Er³⁺ Phosphors

Y2O2S is a kind of water-insoluble, good chemical stability, oxidation resistance and high melting point, It has a winder band gap, also has a low phonon energy, doped with other rare earth ions suitable for it. Therefor it is an effective light matrix material. The Y2O2S phosphor of incorporation Yb3+and Er3+is high luminous efficiency. It is very good up conversion luminescence materials. However, under the excitation of1064nm and1550nm Y2O2S:Yb3+, Er3+up conversion luminescence research reports are few.In this paper, the orthogonal experimental design method to produce the four factors and three levels of orthogonal experimental table. Determine the form factors for the sintering temperature, holding time, flux types, rare earth doped amount. High temperature solid phase prepared Y2O2S:Yb3+, Er3+phosphors. To study the luminescence spectroscopy of samples under the excitation of different wavelengths of light. And discuss the luminescence mechanism of Y2O2S:Yb3+, Er3+up conversion phosphor under the excitation of980nm,1550nm and1064nm infrared light. The results show that the luminescence mechanism of erbium ions is different under the excitation of the different infrared light. Cause the emission spectra of samples are different. Under the excitation of980nm,1064nm and1550nm wavelength laser, there were peaks at the wavelength of529nm,549nm and671nm. Under the excitation of980nm and1550nm wavelength, the strongest peak is at the wavelength of549nm. The red was annihilated, the sample emitted a dazzling green. Under the excitation of1064nm wavelength, the emission intensity of the sample is low.