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Chem. J. Chinese Universities ›› 2009, Vol. 30 ›› Issue (11): 2127.

• Articles • Previous Articles     Next Articles

Synthesis and Luminescent Properties of YVO4∶Sm3+ Red Phosphor by Molten Salt Synthesis Method

LIU Rong1,2,3, LIANG Yu-Jun1,2*, WU Xiao-Yong1,2, LI Yong-Zhou1,2, GONG Yan-Sheng1,2   

  1. 1. Engineering Research Center of Nano-Geomaterials of Ministry of Education,
    2. Faculty of Materials Science and Chemical Engineering, China University of Geosciences, Wuhan 430074, China;
    3. School of Chemical and Environmental Engineering, Hubei University for Nationalities, Enshi 445000, China
  • Received:2008-12-12 Online:2009-11-10 Published:2009-11-10
  • Contact: LIANG Yu-Jun. E-mail: yujunliang@sohu.com
  • Supported by:

    湖北省自然科学基金(批准号: 2007ABA343)和佛山市科技发展专项资金(批准号: 2006021B)资助.

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Abstract:

Luminescent materials YVO4∶Sm3+ were successfully prepared using NaNO3 as the molten salt by molten salt synthesis(MSS) method. The phosphors obtained were treated with different calcination temperatures and doping concentrations to get better luminescent properties. The uniformity of phase of Sm3+ doped YVO4 phosphor was checked by X-ray diffraction(XRD) technique. In addition, the dependence of the luminescence intensity on doping concentrations and annealing temperatures were discussed. The results show the characteristic emissions of the doped rare earth ions(Sm3+) in YVO4 hosts. The emission at 647 nm due to 4G5/2-6H9/2 transition of Sm3+ ions was improved drastically by MSS method than other methods. All samples show red emission and the best red light emission is observed with YVO4∶Sm3+(Sm3+ molar fraction 1%) after calcinated at 500 ℃ for 5 h.

Key words: YVO4∶Sm3+; Molten salt synthesis method; Luminescent material; Samarium ion

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