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Photoluminescence Properties of NaLa(WO4)2:Tb3+ Novel Green Phosphors Prepared by the Combustion Method

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Abstract:

A series of NaLa(WO4)2:Tb3+ green phosphors have been prepared by a facile combustion method. X-ray powder diffraction (XRD) and photoluminescence were used to characterize the structure and luminescence properties of as-synthesized phosphors, respectively. The XRD results confirm that the as-synthesized phosphors exhibit sheelite-type structure without any impurity phase. The excitation band of the phosphors covers a wide region of 200-300 nm. The as-obtained phosphors emit strong green light centered at 546 nm under ultraviolet light excitation (261 nm). The results show that the optimum temperature is 800°C and the optimum concentration of Tb3+-dopant is 50 at%.

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Periodical:

Materials Science Forum (Volume 694)

Pages:

513-517

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.694.513

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Online since:

July 2011

Authors:

Xian Hua Qian, Xi Peng Pu, Da Feng Zhang, Shi Cai Cui, Yan Yan Gao

Keywords:

Combustion Method, Luminescence, NaLa(WO4)2:Tb3+, Phosphor

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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