Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5399273 | Journal of Luminescence | 2015 | 5 Pages |
Abstract
A new red-emitting phosphor of Eu3+-doped Na3La8V3O21 was successfully synthesized by the high-temperature solid state reaction. The phase formation was confirmed by X-ray powder diffraction (XRD) analysis. The morphology of the phosphor was analyzed by scanning electron microscopy (SEM). The optimal doping concentration of Na3La8V3O21:Eu3+ is about 20Â mol%. The detailed luminescence properties, e.g., the excitation spectra, the luminescence spectra and quantum efficiency under the excitation of near-UV, and decay lifetimes were reported. The phosphors can be efficiently excited by near-ultraviolet light and exhibit a bright red luminescence around 618Â nm ascribed to the forced electric dipole transition 5D0â7F2 of Eu3+ ions. The thermal stabilities and the absolute luminescence quantum efficiency (QE) were reported. The phosphors of Eu3+-activated Na3La8V3O21 have been discussed as a candidate for white solid state lighting indicating.
Related Topics
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Chemistry
Physical and Theoretical Chemistry
Authors
Yinfu Pu, Honggen Weng, Han Cheng, Sun Il Kim, Hyo Jin Seo,