Dysprosium-doped orthorhombic yttrium aluminate(Dy:YAlO3or Dy:YAP)single crystals were grown by the Czochralski method with a size ofΦ43 mm×150 mm.Based on the measurements of spectra and theoretical analysis,th...Dysprosium-doped orthorhombic yttrium aluminate(Dy:YAlO3or Dy:YAP)single crystals were grown by the Czochralski method with a size ofΦ43 mm×150 mm.Based on the measurements of spectra and theoretical analysis,the white-light emission was investigated with different doping concentrations.The optimal white emission was achieved at Dy^(3+)doping concentration of 1.0%under 450 nm excitation.Combining with residual pumping light,the white-light output was successfully obtained with Commission Internationale de l'Eclairage(CIE)coordinates x=0.3797,y=0.3685,the color temperature of 4000 K,and the largest fluorescence quantum yield of 46.9%.With the development of the GaN laser diode,the Dy:YAP single crystal has proven applicable in white-light-emitting diodes.展开更多
基金supported by the National Natural Science Foundation of China(Nos.92163207,52002272,61835014,51890860,51890864,and 51890865)。
文摘Dysprosium-doped orthorhombic yttrium aluminate(Dy:YAlO3or Dy:YAP)single crystals were grown by the Czochralski method with a size ofΦ43 mm×150 mm.Based on the measurements of spectra and theoretical analysis,the white-light emission was investigated with different doping concentrations.The optimal white emission was achieved at Dy^(3+)doping concentration of 1.0%under 450 nm excitation.Combining with residual pumping light,the white-light output was successfully obtained with Commission Internationale de l'Eclairage(CIE)coordinates x=0.3797,y=0.3685,the color temperature of 4000 K,and the largest fluorescence quantum yield of 46.9%.With the development of the GaN laser diode,the Dy:YAP single crystal has proven applicable in white-light-emitting diodes.
