Photoluminescence enhancement of red-emitting GdVO4:Eu and YVO4:Eu phosphors by adding zinc

• 作 者: K.Park J.Kim K.Y.Kim J.Y.Kim Y.Kim S.J.Dhoble
• 机 构: Faculty of Nanotechnology and Advanced Materials Engineering,Sejong University,Department of Advance
• 出 处: Journal of Rare Earths
• 发表日期: 2013年01期

We synthesized the rare-earth activated R0.94-xEu0.06ZnxVO4 (R: Gd and Y; 0≤x≤0.08) phosphors with a spherical morphology and a smooth surface by the ultrasonic spray pyrolysis. The annealed R0.94-xEu0.06ZnxVO4 crystallized in the tetragonal zircon type structure, belonging to the space group of I41/amd. The incorporation of a small amount of Zn to R0.94Eu0.06VO4 improved the emission characteristics. The emission intensities of the Gd0.88Eu0.06Zn0.06VO4 and Y0.9Eu0.06Zn0.04VO4 phosphors at 619 nm were 72% and 21% stronger than those of the Gd0.94Eu0.06VO4 and Y0.94Eu0.06VO4 phosphors, respectively. We demonstrated that the addition of Zn to R0.94Eu0.06VO4 was quite effective for improving the photoluminescent properties.

We synthesized the rare-earth activated R0.94-xEu0.06ZnxVO4 (R: Gd and Y; 0≤x≤0.08) phosphors with a spherical morphology and a smooth surface by the ultrasonic spray pyrolysis. The annealed R0.94-xEu0. 06ZnxVO4 crystallized in the tetragonal zircon type structure, belonging to the space group of I41 / amd. The incorporation of a small amount of Zn to R0.94Eu0.06VO4 improved the emission characteristics. The emission intensities of the Gd0.88Eu0.06Zn0.06VO4 and Y0.9Eu0.06Zn0.04VO4 phosphors at 619 nm were 72% and 21% stronger than those of the Gd0.94Eu0.06VO4 and Y0.94Eu0.06VO4 phosphors, respectively. We demonstrated that the addition of Zn to R0.94Eu0. 06VO4 was quite effective for improving the photoluminescent properties.