Ba3Y(PO4)3:Dy3+,Eu3+单基质白光荧光粉的制备与发光性能

doi:10.11944/j.issn.1000-0518.2017.10.160495

摘要/Abstract

摘要：

为了探究在Dy³⁺掺杂Ba₃Y(PO₄)₃荧光粉中共掺Eu³⁺离子对其发光性能的影响,我们采用传统高温固相法制备了一系列Dy³⁺、Eu³⁺单掺杂和共掺杂Ba₃Y(PO₄)₃荧光粉。通过X射线衍射(XRD)、荧光发射光谱和荧光衰减曲线对样品进行了表征。结果表明,所制备的荧光粉呈闪铋矿立方相。在近紫外光激发下,Ba₃Y(PO₄)₃:Dy³⁺发射光谱在487和578 nm处有两个窄带发射峰,呈冷白光发射;Ba₃Y(PO₄)₃:Eu³⁺发射光谱的窄带发射位于594和616 nm处,呈发橙红光。在Ba₃Y(PO₄)₃:Dy³⁺,Eu³⁺中,由于Eu³⁺离子补偿Dy³⁺冷白光发射所缺的红色组分,从而实现了色纯度高、色温适中的暖白光发射。进一步探索了Ba₃Y(PO₄)₃:Dy³⁺,Eu³⁺荧光粉发光机理。所制备的Ba₃Y(PO₄)₃:Dy³⁺,Eu³⁺单基质白光荧光粉在白光近紫外激发白光二极管(UV-WLED)领域具有潜在应用价值。

关键词: Ba₃Y(PO₄)₃:Dy³⁺, Eu³⁺, 白光荧光粉, 能量传递

Abstract:

A series of Dy³⁺ and/or Eu³⁺ doped Ba₃Y(PO₄)₃ phosphors was prepared via a traditional high temperature solid state reaction to investigate how the luminescent properties of Dy³⁺ doped Ba₃Y(PO₄)₃ phosphor can be tuned by co-doping Eu³⁺ ions into the host lattice. X-ray diffraction(XRD), photoluminescence and fluorescence lifetime were used to characterize the as-prepared samples. The results show that all the samples have Ba₃Y(PO₄)₃ eulytite cubic structure. Under the excitation of near-UV light, the Ba₃Y(PO₄)₃:Dy³⁺ phosphor shows cool-white emission and the Ba₃Y(PO₄)₃:Eu³⁺ phosphor presents an orange-red emission. For Ba₃Y(PO₄)₃:Dy³⁺,Eu³⁺ phosphor, warm-white emission with high color rendering index and appropriate correlated color temperature has been obtained by combining red emission of Eu³⁺with cool-white emission of Dy³⁺. The luminescence mechanism of Ba₃Y(PO₄)₃:Dy³⁺,Eu³⁺ phosphor has been tentatively proposed and the prepared Ba₃Y(PO₄)₃:Dy³⁺,Eu³⁺ phosphor has potential application in white-light-emitting-diodes(WLEDs) filed.

Key words: Ba₃Y(PO₄)₃:Dy³⁺, Eu³⁺, white-emitting phosphor, energy transfer

李帅龙, 刘小明, 唐星华, 冯景春, 谢伟杰. Ba₃Y(PO₄)₃:Dy³⁺,Eu³⁺单基质白光荧光粉的制备与发光性能[J]. 应用化学, 2017, 34(10): 1186-1194.

LI Shuailong, LIU Xiaoming, TANG Xinghua, FENG Jingchun, XIE Weijie. Synthesis and Luminescence Properties of Ba₃Y(PO₄)₃:Dy³⁺,Eu³⁺ Single Phase White-emitting Phosphor[J]. Chinese Journal of Applied Chemistry, 2017, 34(10): 1186-1194.

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Ba₃Y(PO₄)₃:Dy³⁺,Eu³⁺单基质白光荧光粉的制备与发光性能

Synthesis and Luminescence Properties of Ba₃Y(PO₄)₃:Dy³⁺,Eu³⁺ Single Phase White-emitting Phosphor

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