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Synthesis and photoluminescence properties of MZr2(PO4)3:Eu3+; Bi3+ (M=Na; K) phosphors

100%

He X., Huang J., Zhou L., Pang Q., Gong F.

Open Physics

2012

vol. 10

issue 2

514-518

A series of new red phosphors, MZr2(PO4)3:Eu3+; Bi3+ (M=Na; K), were synthesized using the solidstate reaction method, and their photoluminescence spectra were measured. The MZr2(PO4)3:Eu3+; Bi3+ (M=Na; K) phosphors were efficiently excited by an ultraviolet (UV; 395 nm) source, and showed intense orange-red emission at 595 nm. Further investigation of the concentration-dependent emission spectra indicated that the MZr2(PO4)3:Eu3+; Bi3+ (M=Na; K) phosphors exhibit the strongest luminescence intensity when y = 0.01 in NaZr2(0:95−y)(PO4)3:Eu0.103+, Bi2y 3+ and y = 0.09 in NaZr2(0.95−y)(PO4)3:Eu0.103+, Bi2y 3+, whereas the relative PL intensity decreases with increasing Bi3+ concentration due to concentration quenching. The addition of Bi3+ widens the excitation band of NaZr2(0.95−y)(PO4)3:Eu0.103+, Bi2y 3+ around 320 nm, which provides the useful idea of broadening the excitation band around 300–350 nm to fit the ultraviolet chip.

Synthesis and luminescence properties of the red phosphor CaZrO3:Eu3+ for white light-emitting diode application

100%

Huang J., Zhou L., Lan Y., Gong F., Li Q., Sun J.

Open Physics

2011

vol. 9

issue 4

975-979

Eu3+-doped CaZrO3 phosphor with perovskite-type structure was synthesized by the high temperature solid-state method. The samples were characterized by X-ray diffraction, scanning electron microscopy, fluorescence spectrophotometer and UV-vis spectrophotometer, respectively. XRD analysis showed that the formation of CaZrO3 was at the calcinations temperature of 1400°C. The average diameter of CaZrO3 with 4 mol% doped-Eu3+ was 2µm. The PL spectra demonstrated that CaZrO3:Eu3+ phosphor could be excited effectively in the near ultraviolet light region (397 nm) and emitted strong red-emission lines at 616 nm corresponding to the forced electric dipole 5 D 0 → 7 F 2 transitions of Eu3+. Meanwhile, the light-emitting diode was fabricated with the Ca0.96ZrO3:Eu0.043+ phosphor, which can efficiently absorb ∼ 400 nm irradiation and emit red light. Therefore Ca0.96ZrO3:Eu0.043+ may have applications for a near ultraviolet InGaN chip-based white light-emitting diode.

The Influence of Calcination Temperature on Structural and Optical properties of ZnO-SiO2 Nanocomposite by Simple Thermal Treatment Route

88%

Alibe I. M., Matori K. A., Sidek H. A. A., Yazid Y., Saion E., Alibe A. M., Zaid M. H. M., Engku A. E. A. G., Zangina T.

Archives of Metallurgy and Materials

2018

vol. 63

issue 2

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2 Open Physics

1 Archives of Metallurgy and Materials

1 2018

1 2012

1 2011

2 Gong F.

2 Huang J.

2 Zhou L.

1 Alibe A. M.

1 Alibe I. M.

1 Engku A. E. A. G.

1 He X.

1 Lan Y.

1 Li Q.

1 Matori K. A.

1 Pang Q.

1 Saion E.

1 Sidek H. A. A.

1 Sun J.

1 Yazid Y.

1 Zaid M. H. M.

1 Zangina T.

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Synthesis and photoluminescence properties of MZr2(PO4)3:Eu3+; Bi3+ (M=Na; K) phosphors

Synthesis and luminescence properties of the red phosphor CaZrO3:Eu3+ for white light-emitting diode application

The Influence of Calcination Temperature on Structural and Optical properties of ZnO-SiO2 Nanocomposite by Simple Thermal Treatment Route