Effect of co-doped metal caions on the properties of Y2O3:Eu3+ phosphors synthesized by gel-combustion method

doi:10.1088/1674-1056/25/4/047802

Abstract Y₂O₃:Eu³⁺ phosphors co-doped with different metal cations (Li⁺, Na⁺, K⁺, Mg²⁺, Ca²⁺) are prepared by the gel-combustion method with Y₂O₃, Eu₂O₃, and R(NO₃)_x (R=Li, Na, K, Mg, Ca) serving as raw materials and glycine as fuel, calcined at 1000 ℃ for 2 h. The synthesized Y₂O₃:Eu³⁺ phosphors doped with different metal cations and doping ratios are characterized by x-ray diffractometry (XRD), fluorescence and phosphorescent spectrophotometer. The co-doping metal cations are advantageous to the development of Y₂O₃:Eu³⁺ lattice. All the samples can emit red light peaked at 611 nm under 254-nm excited. The luminescence intensities of co-doping samples are increased because the cations increase the electron transition probability of Eu³⁺ from ⁵D₀ level to ⁷F level. The fluorescence lifetime of Eu³⁺ (⁵D₀→⁷F₂) is increased by doping metal cations.

Keywords: combustion method metal cations Y₂O₃:Eu³⁺

Received: 10 October 2015
Revised: 20 December 2015
Accepted manuscript online:

PACS:	78.55.-m	(Photoluminescence, properties and materials)
	81.07.-b	(Nanoscale materials and structures: fabrication and characterization)
	32.50.+d	(Fluorescence, phosphorescence (including quenching))

Corresponding Authors: Hui Shi, Xi-Yan Zhang
E-mail: sh_1985@126.com;xiyzhang@126.com

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Hui Shi(石慧), Xi-Yan Zhang(张希艳), Wei-Li Dong(董玮利), Xiao-Yun Mi(米晓云), Neng-Li Wang(王能利), Yan Li(李艳), Hong-Wei Liu(刘宏伟) Effect of co-doped metal caions on the properties of Y₂O₃:Eu³⁺ phosphors synthesized by gel-combustion method 2016 Chin. Phys. B 25 047802

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Effect of co-doped metal caions on the properties of Y2O3:Eu3+ phosphors synthesized by gel-combustion method

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Effect of co-doped metal caions on the properties of Y₂O₃:Eu³⁺ phosphors synthesized by gel-combustion method