Photoluminescence properties and energy transfer in Y2O3：Eu3+ nanophosphors

doi:10.1088/1674-1056/23/5/057801

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 C_3i 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 C_3i 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
Revised: 07 February 2014
Accepted manuscript online:

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 (崔航), Zhu Pei-Fen (朱培芬), Zhu Hong-Yang (祝洪洋), Li Hong-Dong (李红东), Cui Qi-Liang (崔啟良) Photoluminescence properties and energy transfer in Y₂O₃：Eu³⁺ nanophosphors 2014 Chin. Phys. B 23 057801

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Photoluminescence properties and energy transfer in Y2O3：Eu3+ nanophosphors

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Photoluminescence properties and energy transfer in Y₂O₃：Eu³⁺ nanophosphors