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Chin. Phys. B, 2014, Vol. 23(5): 057801    DOI: 10.1088/1674-1056/23/5/057801
CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES Prev   Next  

Photoluminescence properties and energy transfer in Y2O3:Eu3+ nanophosphors

Cui Hanga, Zhu Pei-Fenb, Zhu Hong-Yanga, Li Hong-Donga, Cui Qi-Lianga
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
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.
Keywords:  Y2O3:Eu3+      photoluminescence      energy transfer      fluorescence lifetime     
Received:  23 December 2013      Published:  15 May 2014
PACS:  78.20.-e (Optical properties of bulk materials and thin films)  
  78.60.Lc (Optically stimulated luminescence)  
  42.70.-a (Optical materials)  
Fund: 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).
Corresponding Authors:  Zhu Hong-Yang     E-mail:  hongyangzhu@jlu.edu.cn
About author:  2014-3-18

Cite this article: 

Cui Hang, Zhu Pei-Fen, Zhu Hong-Yang, Li Hong-Dong, Cui Qi-Liang Photoluminescence properties and energy transfer in Y2O3:Eu3+ nanophosphors 2014 Chin. Phys. B 23 057801

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