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The preparation and luminescence properties of orange red phosphor£¨Sr1-xBax£©3-ySiO5¡Ãy Eu2+
SHANG Jin1£¬ QIU Ke-hui1£¬ LU Xue-guang2£¬ ZHAO Kun2£¬ ZHANG Li1
£¨1. Institute of Materials Science and Technology Chengdu University of Technology£¬Chengdu 610059£¬China£»
2. Sichuan Sunfor Lighting Co.£¬Ltd.£¬Chengdu 611731£¬China£©
Abstract: Orange red emitting phosphor£¨Sr1-xBax£©3-ySiO5¡Ãy Eu2+ was synthesized via high temperature solid-state reaction under a reducing atmosphere and characterized by X-ray diffraction £¨XRD£© and fluorescence spectrophotometer. The results indicate that the synthesized phosphor has the same crystal structure type with Sr3SiO5. The photoluminescence excitation and photoluminescence spectra of £¨Sr1-xBax£©3-ySiO5¡Ãy  Eu2+ shows a broadband characteristic with a peak located at 592-609 nm and 365 nm£¬ respectively. Thermal stability and luminescent intensity represented corresponding changes with the different concertrations of Eu2+ and Ba2+. Finally£¬ the possible mechanism was discussed.
Key words: £¨Sr1-xBax£©3-ySiO5¡Ãy Eu2+£» orange-emitting phosphor£» red shift£» blue shift£» thermal stability

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