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Synthesis and characterization of Eu3+/Dy3+ codoped composite phosphors SrAl2Si2O8/SrAlSi1/2O7/2 via a one-pot nitrate-gel process

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Abstract

Composite phosphors SrAl2Si2O8/SrAlSi1/2O7/2 codoped with Eu3+ and Dy3+ were synthesized via a simple one-pot nitrate-gel process. The thermal decomposition process of the precursor is investigated by thermal analysis, X-ray diffraction and infrared spectroscopy, respectively. The as-prepared Eu3+/Dy3+ codoped SrAl2Si2O8/SrAlSi1/2O7/2 phosphors could yield blue (436 nm), bluegreen (486 nm), yellow (583 nm), and red (617 nm) lights under near-UV 380 nm excitation from a composite matrix produced by spontaneous phase separation during heat treatment of the precursor. Moreover, the effects of Dy3+ doping concentration on the structures, defect features, and luminescence properties of the composite phosphors were examined in detail.

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Acknowledgments

This work was financially supported by the National Natural Science Foundation of China (Grant #50674068, #50974090), Shenzhen Government’s Plan of Science and Technology (Grant #JC200903120029A) and Science and Technology Planning Project of Shenzhen Nanshan District, China (Grant #2009037). The authors are grateful to Professor W. Deng of Guangxi University for PAL spectra measurements and helpful discussions.

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Authors and Affiliations

  1. Department of Materials Science and Engineering, Shenzhen Graduate School, Harbin Institute of Technology, Xili, Shenzhen, 518055, China

    Zhengwu Lu, Luqian Weng & Shenhua Song

  2. School of Chemistry and Chemical Engineering, Shenzhen University, Shenzhen, 518060, China

    Peixin Zhang, Qianqian Hou & Xiangzhong Ren

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  1. Zhengwu Lu
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  2. Luqian Weng
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  3. Shenhua Song
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  4. Peixin Zhang
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  5. Qianqian Hou
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Correspondence to Zhengwu Lu or Peixin Zhang.

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Lu, Z., Weng, L., Song, S. et al. Synthesis and characterization of Eu3+/Dy3+ codoped composite phosphors SrAl2Si2O8/SrAlSi1/2O7/2 via a one-pot nitrate-gel process. J Sol-Gel Sci Technol 62, 160–169 (2012). https://doi.org/10.1007/s10971-012-2704-z

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  • DOI: https://doi.org/10.1007/s10971-012-2704-z

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