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Citation: WEI Ya-Shu, ZHANG Jin-Chao, SONG Li. Study on the Firing Condition and Flux in Synthesizing Y₂O₂S: Eu³⁺,Mg²⁺,Ti⁴⁺ Red Afterglow Phosphor[J]. Chinese Journal of Applied Chemistry, ;2005, 22(12): 1342-1346. shu

Study on the Firing Condition and Flux in Synthesizing Y₂O₂S: Eu³⁺,Mg²⁺,Ti⁴⁺ Red Afterglow Phosphor

1.
Department of Inorganic Materials, East China University of Science and Technology, Shanghai 200237

Corresponding author: ZHANG Jin-Chao,
Received Date: 15 December 2004
Available Online: 15 April 2005

Eu³⁺-activated yttrium oxysulfide red afterglow phosphor was synthesized by solid-state reaction and analyzed by means of XRD,SEM,and its emmision spectra(ES),relative brightness,and fluorescent(decay) were studied.Effects of firing conditions and flux on the crystal structure,particle size and morphology,and luminescent properties of the phosphor were studied.According to the results,the phosphor was obtained without any Y₂O₃ phase and exhibited well-formed crystalline particles.Luminescent properties can be optimized by well-formed crystalline particles.The corresponding firing condition is 1 150℃ in a weak reducing atmosphere.The addition of Li₃PO₄ helps to increase the mean diameter of the phosphor product and minimize the particle size distribution.
- Y₂O₂S:Eu³⁺,
- firing condition,
- flux,
- luminescent properties
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Study on the Firing Condition and Flux in Synthesizing Y₂O₂S: Eu³⁺,Mg²⁺,Ti⁴⁺ Red Afterglow Phosphor