中国物理B ›› 2014, Vol. 23 ›› Issue (5): 57801-057801.doi: 10.1088/1674-1056/23/5/057801

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Photoluminescence properties and energy transfer in Y2O3：Eu3+ nanophosphors

崔航a, 朱培芬b, 祝洪洋a, 李红东a, 崔啟良a   

  1. a State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China;
    b Department of Electrical and Computer Engineering, Lehigh University, Bethlehem, PA 18015, USA
  • 收稿日期:2013-12-23 修回日期:2014-02-07 出版日期:2014-05-15 发布日期:2014-05-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11304111 and 51172087), the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20110061110011), and the Postdoctoral Research Foundation of China (Grant No. 2013M541284).

Photoluminescence properties and energy transfer in Y2O3：Eu3+ nanophosphors

Cui Hang (崔航)a, Zhu Pei-Fen (朱培芬)b, Zhu Hong-Yang (祝洪洋)a, Li Hong-Dong (李红东)a, Cui Qi-Liang (崔啟良)a   

  1. a State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China;
    b Department of Electrical and Computer Engineering, Lehigh University, Bethlehem, PA 18015, USA
  • Received:2013-12-23 Revised:2014-02-07 Online:2014-05-15 Published:2014-05-15
  • Contact: Zhu Hong-Yang E-mail:hongyangzhu@jlu.edu.cn
  • About author:2014-3-18
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11304111 and 51172087), the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20110061110011), and the Postdoctoral Research Foundation of China (Grant No. 2013M541284).

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摘要： The photoluminescence (PL) properties of Y2O3:Eu3+ nanophosphors were systematically investigated with the goal of improving the color quality and quantum efficiency of Y2O3:Eu3+ nanophosphors for potential applications in nano-scale devices. The emission spectra, excitation spectra and fluorescence decay curves were employed to trace the energy transfer process from Eu3+ at C3i site to Eu3+ at C2 site. The experimental results show that the energy transfer process becomes more and more efficient with the increase in the Eu3+ concentration. The emission of Eu3+ at C2 site is favorable as it has high radiative efficiency and better color quality. The successful suppress of the emission Eu3+ at C3i is especially important for its applications in general illumination or display technology. The quantum efficiency and color quality of Y2O3:Eu3+ can be improved by controlling the energy transfer between the Eu3+ at S6 site and Eu3+ at C2 site.

关键词: Y2O3：Eu3+, photoluminescence, energy transfer, fluorescence lifetime

Abstract: The photoluminescence (PL) properties of Y2O3:Eu3+ nanophosphors were systematically investigated with the goal of improving the color quality and quantum efficiency of Y2O3:Eu3+ nanophosphors for potential applications in nano-scale devices. The emission spectra, excitation spectra and fluorescence decay curves were employed to trace the energy transfer process from Eu3+ at C3i site to Eu3+ at C2 site. The experimental results show that the energy transfer process becomes more and more efficient with the increase in the Eu3+ concentration. The emission of Eu3+ at C2 site is favorable as it has high radiative efficiency and better color quality. The successful suppress of the emission Eu3+ at C3i is especially important for its applications in general illumination or display technology. The quantum efficiency and color quality of Y2O3:Eu3+ can be improved by controlling the energy transfer between the Eu3+ at S6 site and Eu3+ at C2 site.

Key words: Y2O3：Eu3+, photoluminescence, energy transfer, fluorescence lifetime

中图分类号:  (Optical properties of bulk materials and thin films)

  • 78.20.-e
78.60.Lc (Optically stimulated luminescence) 42.70.-a (Optical materials)