【摘 要】
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In this paper,high temperature solid state reaction method was adapted to prepare phosphate based single matrix white phosphor,and the luminescence properties of phosphor were investigated through adj
【机 构】
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Jiangsu Key Laboratory of Advanced Laser Materials and Devices,School of Physics and Electronic Engi
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In this paper,high temperature solid state reaction method was adapted to prepare phosphate based single matrix white phosphor,and the luminescence properties of phosphor were investigated through adjusting the doping ions and their concentrations.The fluorescence spectrum of phosphor and color coordinates calculation were also anaylsed to optimize the doping concentration in order to achieve white light emmition among thecolor coordinate range of (0.33,0.33).The results show that the La7(1-x)P3O18∶xDy3+ phosphor could be effectively excited by 347nm UV light.With the increasing of Dy3+ dopingconcentration,the luminescence intensity of phosphor increased at first and then decreased.The emission peakswere located at 470nm,482nm and 578nm.When the doping concentration was 0.02 wt%,the fluorescence intensity of phosphor reached to its maximal at the color coordinate of (0.21,0.26),and color temperature at this point was28586 k.When the doping concentration reached to 0.03wt%,the luminescence property of phosphor was closest to the pure white light at a color coordinate of (0.23,0.24),and the color temperature was 2832k.
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