Preparation of Nano Y2O2S:Eu Phosphor by Ethanol Assisted Combustion Synthesis Method
来源期刊：JOURNAL OF RARE EARTHS2006年第1期
论文作者：Xing Mingming Cao Wanghe Luo Xixian
Key words：rare earth oxysulfide; combustion synthesis route; nanocrystalline;
Abstract: Y2O2S∶Eu nano crystallines were prepared by a new ethanol assisted combustion synthesis method using sulfur-contained organic fuel in an ethanol-aqueous solution. The as-prepared nanocrystallines were characterized by X-ray diffraction, transmission electron microscope, photoluminescence spectra and X-ray luminescence spectra. It is shown that the assistant fuel ethanol has the effect of decreasing the water needed, simplifying the experiment procedure by dissolving rare earth nitrate and sulfur-contained organic fuel into an even solution, and prompting the formation of rare earth oxysulfide by igniting firstly during heating that leads to combustion decomposition reaction. Y2O2S∶Eu nano crystallines with strong photoluminescence and X-ray luminescence are obtained using thioacetamide as organic fuel. Mixtures of Y2O3∶Eu and Y2O2S∶Eu are acquired using thiourea as fuel, and the content of Y2O2S∶Eu increases until reaches to about half of the Y2O3∶Eu with the increasing amount of thiourea. Y2O2SO4∶Eu emerges when S/Y=6 and increases with increasing thiourea amount.
Xing Mingming1，Cao Wanghe1，Luo Xixian1
(1.Optoelectronic Technology Institute, Dalian Maritime University, Dalian 116026, China)
Abstract:Y2O2S∶Eu nano crystallines were prepared by a new ethanol assisted combustion synthesis method using sulfur-contained organic fuel in an ethanol-aqueous solution. The as-prepared nanocrystallines were characterized by X-ray diffraction, transmission electron microscope, photoluminescence spectra and X-ray luminescence spectra. It is shown that the assistant fuel ethanol has the effect of decreasing the water needed, simplifying the experiment procedure by dissolving rare earth nitrate and sulfur-contained organic fuel into an even solution, and prompting the formation of rare earth oxysulfide by igniting firstly during heating that leads to combustion decomposition reaction. Y2O2S∶Eu nano crystallines with strong photoluminescence and X-ray luminescence are obtained using thioacetamide as organic fuel. Mixtures of Y2O3∶Eu and Y2O2S∶Eu are acquired using thiourea as fuel, and the content of Y2O2S∶Eu increases until reaches to about half of the Y2O3∶Eu with the increasing amount of thiourea. Y2O2SO4∶Eu emerges when S/Y=6 and increases with increasing thiourea amount.
Key words:rare earth oxysulfide; combustion synthesis route; nanocrystalline;
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