Preparation and Luminescence Properties of the New Long Phosphorescent Phosphors Ba1-xCaxAl2O4∶Eu2+,Dy3+
来源期刊：JOURNAL OF RARE EARTHS2004年第1期
论文作者：成正维 何大伟 刘端阳 邓朝勇 刘春棠 李少霞 康凯
Key words：opstics; afterglow; luminescence; Ba1-xCaxAl2O4∶Eu2+,Dy3+; rare earths;
Abstract: New long phosphorescent phosphors Ba1-xCaxAl2O4∶Eu2+, Dy3+ with tunable color emission were prepared and studied. The emission spectra show that the tuning range of the color emission of the phosphors is between 498 and 440 nm, which is dependent on x, under the excitation of UV. The wavelength of the afterglow increases with the increasing of x until x equals 0.6. The XRD patterns show that the single phase limit in the phosphors is below x value of 0.4. The Thermoluminescence spectra were measured to investigate the traps created by the doping of Dy3+.
成正维1，何大伟1，刘端阳1，邓朝勇1，刘春棠1，李少霞1，康凯1
(1.Key Lab of Materials for Information Storage and Display, Institute of Optoelectronic Technology, Beijing Jiao Tong University, Beijing 100044, China)
Abstract:New long phosphorescent phosphors Ba1-xCaxAl2O4∶Eu2+, Dy3+ with tunable color emission were prepared and studied. The emission spectra show that the tuning range of the color emission of the phosphors is between 498 and 440 nm, which is dependent on x, under the excitation of UV. The wavelength of the afterglow increases with the increasing of x until x equals 0.6. The XRD patterns show that the single phase limit in the phosphors is below x value of 0.4. The Thermoluminescence spectra were measured to investigate the traps created by the doping of Dy3+.
Key words:opstics; afterglow; luminescence; Ba1-xCaxAl2O4∶Eu2+,Dy3+; rare earths;
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