Title of article :
Synthesis and luminescent properties of Y6W2O15:Eu3+ phosphors
Author/Authors :
Jinping Huang، نويسنده , , Hongshan Luo، نويسنده , , Pingle Zhou، نويسنده , , Xibin Yu، نويسنده , , Yikang Li، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2007
Pages :
5
From page :
881
To page :
885
Abstract :
In this paper, a novel phosphor, Y6W2O15:Eu3+ was synthesized by thermal decomposition and phase transition of its decatungstate gel precursor. With stepwise increase of temperature to 750 °C, a crystalline phase of Y6W2O15:Eu3+forms that gives intense red emission when excited at 466 nm, the emission is attributed to the Eu3+ ions transitions from 5D0 excited states to 7FJ (J=0–4) ground states. The long excitation wavelength proves the Eu3+ transition follows the photoexcitation of the oxygen–metal (O→W lmct) charge transfer bands in yttrium tungstate. Some structural information regarding Y6W2O15 provided by luminescence is in accord with that characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM). The long-wavelength excitation properties of this material may find application in the production of red phosphors for white light-emitting diodes (LEDs).
Keywords :
Thermal decomposition , Luminescence , structure , Precursor , Y6W2O15:Eu3+
Journal title :
Journal of Luminescence
Serial Year :
2007
Journal title :
Journal of Luminescence
Record number :
1263056
Link To Document :
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