Ba2+共掺杂YPO4∶Tb3+荧光材料的水热合成与荧光性能*

doi:10.11896/j.issn.1005-023X.2017.018.004

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Abstract Ba²⁺ co-doped YPO₄∶Tb³⁺phosphors were successfully synthesized by hydrothermal method. The crystal structure and optical properties of the as-synthesized samples were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), photoluminescence (PL). The influences of Ba²⁺ co-doping concentration and precursor solution pH on the phase structure and luminescence properties of the as-products were investigated. The results show that the pH and Ba²⁺ co-doping concentration play the key role in the structure and luminescence properties of the as-synthesized samples. A small amount of Ba²⁺ (no more than 10 at%) co-doped YPO₄∶1 at%Tb³⁺ samples are single-phase crystals with tetragonal xenotime structure, and Ba₃(PO₄)₂ impurity phase can be observed in the sample co-doped with a large amount of Ba²⁺. The pure and high crystallinity Ba²⁺, Tb³⁺ co-doped YPO₄ samples can be obtained at pH 6 condition. The results of excitation and emission spectra show that the YPO₄∶1 at%Tb³⁺, x at%Ba²⁺ samples can be excited by 225 nm UV light and emit the characteristic yellow-green light of Tb³⁺. An appropriate amount of Ba²⁺ co-doped YPO₄∶1 at%Tb³⁺ samples display enhanced luminescence, and a large amount of Ba²⁺ (more than 10 at%) co-doping in the YPO₄∶1 at%Tb³⁺ samples can quench the Tb³⁺ emission. The optimized doping content of Ba²⁺ is 10 at%. The intensity of emission peak located at 545 nm of YPO₄∶1 at%Tb³⁺, 10 at% Ba²⁺ sample are 1.8 times as many of the YPO₄∶1 at%Tb³⁺ sample.

Key words： YPO₄∶Tb³⁺/Ba²⁺ co-doping hydrothermal method photoluminescence rare earth luminescent material

Published: 08 May 2018

CLC number:

TQ422

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	Articles by authors
	FU Bing
	OU Ya
	LIU Huan
	GU Manqi
	CHEN Zhuo
	YANG Jinyu

Cite this article:

FU Bing,OU Ya,LIU Huan, et al. Ba²⁺ Co-doped YPO₄∶Tb³⁺ Phosphors:Hydrothermal Synthesis and Photoluminescence Properties[J]. Materials Reports, 2017, 31(18): 16-20.

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http://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2017.018.004 OR http://www.mater-rep.com/EN/Y2017/V31/I18/16

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