Photoluminescence characterization of Dy3+ and Eu2+ ion in M5(PO4)3F (M = Ba, Sr, Ca) phosphors
Photoluminescence characterization of Dy3+ and Eu2+ ion in M5(PO4)3F (M = Ba, Sr, Ca) phosphors
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DOI：
10.1016/j.jallcom.2009.03.069
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发表时间：
2009-07
影响因子：
6.2
通讯作者：
I. M. Nagpure;K. Shinde;S. Dhoble;Animesh Kumar
中科院分区：
文献类型：
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作者：
I. M. Nagpure;K. Shinde;S. Dhoble;Animesh Kumar
Photoluminescence investigation of Eu and Dy activated phosphate based phosphors prepared by combustion synthesis, characterized by XRD (X-ray diffraction) and photoluminescence techniques, has been reported. PL excitation spectrum of M{sub 5}(PO{sub 4}){sub 3}F:Dy phosphors shows the excitation peaks ranging from 300 to 400 nm due to 4f {yields} 4f transitions of Dy{sup 3+} ions. PL emission spectrum of Dy{sup 3+} ion under 348 nm excitation gives PL emission at 482 nm (blue) due to {sup 4}F{sub 9/2} {yields} {sup 6}H{sub 15/2} transitions, 574 nm (yellow) emission due to {sup 4}F{sub 9/2} {yields} {sup 6}H{sub 13/2} transitions and 670 nm (red) due to {sup 4}F{sub 9/2} {yields} {sup 6}H{sub 11/2} transitions, gives BYR (blue-yellow-red) emissions. The Eu{sup 2+} broad band PL emission spectrum was observed in M{sub 5}(PO{sub 4}){sub 3}F:Eu phosphor at 440 nm in the blue region of the spectrum due to 5d {yields} 4f transition at 352 nm excitation. The 300-400 nm is Hg-free excitation (Hg excitation is 85% 254 nm wavelength of light and 15% other wavelengths), which is characteristic of solid-state lighting phosphors. Hence PL emission in divalent europium and trivalent dysprosium may be efficient photoluminescent materials for solid-state lighting phosphors.
Photoluminescence investigation of Eu and Dy activated phosphate based phosphors prepared by combustion synthesis, characterized by XRD (X-ray diffraction) and photoluminescence techniques, has been reported. PL excitation spectrum of M{sub 5}(PO{sub 4}){sub 3}F:Dy phosphors shows the excitation peaks ranging from 300 to 400 nm due to 4f {yields} 4f transitions of Dy{sup 3+} ions. PL emission spectrum of Dy{sup 3+} ion under 348 nm excitation gives PL emission at 482 nm (blue) due to {sup 4}F{sub 9/2} {yields} {sup 6}H{sub 15/2} transitions, 574 nm (yellow) emission due to {sup 4}F{sub 9/2} {yields} {sup 6}H{sub 13/2} transitions and 670 nm (red) due to {sup 4}F{sub 9/2} {yields} {sup 6}H{sub 11/2} transitions, gives BYR (blue-yellow-red) emissions. The Eu{sup 2+} broad band PL emission spectrum was observed in M{sub 5}(PO{sub 4}){sub 3}F:Eu phosphor at 440 nm in the blue region of the spectrum due to 5d {yields} 4f transition at 352 nm excitation. The 300-400 nm is Hg-free excitation (Hg excitation is 85% 254 nm wavelength of light and 15% other wavelengths), which is characteristic of solid-state lighting phosphors. Hence PL emission in divalent europium and trivalent dysprosium may be efficient photoluminescent materials for solid-state lighting phosphors.