Eu, Dy codoped Y2Zr2O7 powders with white light luminescence

Aiyu Zhang*, Ping Yang, Yongqiang Cao, Yuanna Zhu

School of Material Science and Engineering, University of Jinan, Jinan 250022, China

Adv. Mater. Lett., 2011, 2 (5), pp 322-326

DOI: 10.5185/amlett.2011.3042am2011

Publication Date (Web): Apr 08, 2012

E-mail: mse_zhangay@ujn.edu.cn

Abstract


Eu, Dy codoped Y2Zr2O7 crystalline powders have been prepared by a simple sol-gel-combustion method. The lumincescence excitation and emission spectra of the products were measured, and the CIE chromaticity was introduced to characterize the color of the phosphor. It was found that the emission color of the Eu, Dy codoped Y2Zr2O7 powders depends on the doping concentration of Eu, Dy ions and the excitation wavelength. White light emission has been observed for Y2Zr2O7: 1.5%Eu3+, 2.0%Dy3+ under 350nm excitation, for which the calculated chromaticity coordinate is (0.37, 0.32).

Keywords

Luminescence, phosphor, white light, rare earth

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