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张 萍,蒋春东.橙红色荧光粉YPO4:Gd3+,Eu3+的制备及发光特性[J].稀有金属材料与工程(英文),2018,47(12):3824~3828.[Zhang Ping and Jiang Chun dong.Preparation and Luminescence Properties of Reddish-orange Phosphors YPO4:Gd3+,Eu3+[J].Rare Metal Materials and Engineering,2018,47(12):3824~3828.]
Preparation and Luminescence Properties of Reddish-orange Phosphors YPO4:Gd3+,Eu3+
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Received:April 24, 2017  Revised:August 10, 2017
Key words: phosphors  reddish-orange light  Eu 3+ doping  high temperature solid-state method  fluxes
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Zhang Ping and Jiang Chun dong  
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      The reddish-orange phosphors YPO4:Gd3+,Eu3+ were synthesized with the high temperature solid-state method at 1100 ℃, and discussions were conducted in respect of the influences of Eu3+ ion doping concentration, alkali carbonate,flux and sensitizers on the luminescence properties of YPO4:Eu3+. XRD analysis shows that the synthesized principal phosphor is of the single phase YPO4. Eu3 + ions have a better doping concentration of 2.5%. Alkali carbonate Na2CO3 can effectively improve the photoluminescence intensity of the phosphor. The addition of flux NH4F can reduce the phosphor calcination temperature from 1100 ℃ to 800 ℃ and facilitate the luminescence center into the crystal lattice. Gd3+ ion can effectively transfer the absorption energy to Eu3+ ions at the luminescent center, enhancing the luminescence intensity of the phosphor. The chromaticity coordinate analysis shows that the chromaticity coordinate of the phosphor YPO4:0.025Eu3+is (0.61,0.39) which locates within the scope of the chromaticity coordinate of the standard reddish-orange point.