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Abstrakty
Rare earth Eu3+-doped MgNb2O6 red-emitting phosphor was prepared by solid-state reaction. Structure and photoluminescence properties of the samples were characterized by X-ray diffraction (XRD), scan electron microscopy (SEM) and fluorescence spectrophotometer. Meanwhile, the effect of the co-activator Bi3+ on the PL of the MgNb2O6:Eu3+ phosphor was studied. The results showed that the pure phase of MgNb2O6 could be available after firing at 1200 °C. The Mg1-xNb2O6:Eu3+ x phosphors could be effectively excited by the UV irradiation (273 nm) and emit red light at 615 nm due to the forced electric dipole 5D0 !7 F2 transitions on Eu3+, which indicated that Eu3+ occupied the non-inversion symmetry sites in the MgNb2O6 host lattice. So, the addition of the co-activator Bi3+ not only increased the excitation band of the MgNb2O6:Eu3+ phosphor at about 330 nm, but also strengthened the PL intensity at 615 nm. Therefore, MgNb2O6:Eu3+, Bi3+ might find application to InGaN chip-based white light emitting diodes.
Słowa kluczowe
Wydawca
Czasopismo
Rocznik
Tom
Strony
88--92
Opis fizyczny
Bibliogr. 15 poz., rys., wykr.
Twórcy
autor
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, China
autor
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, China
autor
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, China
Bibliografia
- [1] NARENDRAN N., GU Y., FREYSSINIER-NOVA J.P., ZHU Y., Phys. Status Solidi A, 202 (2005), R60.
- [2] WANG Y.H., SUN Y.K., ZHANG J.C., CI Z.E., ZHANG Z.Y., WANG L., Physica B, 403 (2008), 2071.
- [3] JANG H.S., IM W.B., LEE D.C., JEON D.C., KIM S.S., J. Lumin., 126 (2007), 371.
- [4] ZHU C.Q., XIAO S.G., DING J.W., YANG X.L., QIANG R.F., Mater. Sci. Eng. B-Adv., 150 (2008), 95.
- [5] PARK T.K., AHN H.C., MHO S.I., J. Korean Phys. Soc., 52 (2008), 431.
- [6] FANG T.H., HSIAO Y.J., CHANG Y.S., CHANG Y.H., Mater. Chem. Phys., 100 (2006), 418.
- [7] SHANKER V., GANGUL A., Mater. Sci., 26 (2003), 741.
- [8] LEE H.J., HONG K.S., KIM S.J., KIM I.T., Mater. Res. Bull., 32 (1997), 47.
- [9] ZALDO C., MATIN M.J., COYA C., POLGAR K., PETER A., PAITZ J., J. Phys. Condens. ”Matter., 7 (1995), 224.
- [10] ZHOU Y.Y., MA Q., L¨U M., QIU Z.F., ZHANG A.Y., YANG Z.G., Mater. Sci. Eng. B-Adv., 150 (2008), 66.
- [11] FANG T.H., HSIAO Y.J., CHANG Y.S., JI L.W., KANG S.H., Curr. Opin. Solid St. M., 12 (2008), 51.
- [12] WANG Z.L., LIANG H.B., GONG M.L., SU Q., Opt. Mater., 29 (2007), 896.
- [13] LIU X.M., LIN J., J. Lumin., 122 – 123 (2007), 700.
- [14] XIAO X.Z., YAN B., J. Non-Cryst. Solids, 46 – 48 (2005), 3634.
- [15] RAINHO J.P., CARLOS L.D., ROCHA J., J. Lumin., 87 – 89 (2000), 1083.
Typ dokumentu
Bibliografia
Identyfikator YADDA
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