Influence of Eu(3)(+), Bi(3)(+)co-doping content on photoluminescence of YVO4 red phosphors induced by ultraviolet excitation

Rare earth ion doped insulators have attracted a great deal of interest due to their wide variety of applications, including phosphors. YVO4:Eu, Bi phosphor has a broad excitation band consisting of two peaks-one centered at from 260 to 320nm and the other at a weak band at wavelength of 386-406nm....

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Published in:Sensors and actuators. B, Chemical Chemical, 2007-09, Vol.126 (1), p.324-327
Main Authors: Park, W J, Jung, M K, Yoon, D H
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Yoon, D H
description Rare earth ion doped insulators have attracted a great deal of interest due to their wide variety of applications, including phosphors. YVO4:Eu, Bi phosphor has a broad excitation band consisting of two peaks-one centered at from 260 to 320nm and the other at a weak band at wavelength of 386-406nm. Also, the emission spectrum exhibited a weak band for (5)D0- > (7)F1 at 595nm and strong sharp peaks at about 616 and 620nm due to the(5)D0- > (7)F2 transition of Eu(3)(+). With increasing Bi(3)(+)concentration, the band edge shifts to longer wavelengths, the band edge in the excitation spectrum moves from ~254 to ~328nm as the Bi(3)(+)concentration is increased from 0 to 2mol%. Moreover, with increasing Eu(3)(+)concentration, the intensity of the excitation spectra and the red emission increased continuously up to the Eu(3)(+)concentration of 3mol%.
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title Influence of Eu(3)(+), Bi(3)(+)co-doping content on photoluminescence of YVO4 red phosphors induced by ultraviolet excitation
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