无机化学学报

GdVO₄:Ln³⁺(Ln=Eu,Tm,Dy)荧光粉的水热法制备及其发光性能

Hydrothermal Synthesis and Luminescent Properties of GdVO₄:Ln³⁺ (Ln=Eu, Tm, Dy) Phosphor

作者	单位	E-mail
李雪	长春理工大学化学与环境工程学院, 长春 130022
邸克书	长春理工大学化学与环境工程学院, 长春 130022
姚爽	长春理工大学化学与环境工程学院, 长春 130022	yaoshuang@cust.edu.cn
闫景辉	长春理工大学化学与环境工程学院, 长春 130022	yjh@cust.edu.cn
康振辉	苏州大学功能纳米与软物质(材料)研究院, 苏州 215123

摘要: 以EDTA为矿化剂，采用水热法制备了GdVO₄∶Dy³⁺、GdVO₄∶Dy³⁺，Eu³⁺和GdVO₄∶Dy³⁺，Eu³⁺，Tm³⁺荧光粉，研究了所制备样品的相结构、形貌、荧光性质、Dy³⁺到Eu³⁺的能量传递及Dy³⁺的⁴F_9/2→⁶H_15/2跃迁的衰减曲线。X射线衍射（XRD）确定了所合成的GdVO₄∶0.03Dy³⁺、GdVO₄∶0.03Dy³⁺，0.07Eu³⁺和GdVO₄∶0.03Dy³⁺，0.07Eu³⁺，0.07Tm³⁺样品均为四方晶系；扫描电镜（SEM）显示GdVO₄∶0.03Dy³⁺，0.07Eu³⁺和GdVO₄∶0.03Dy³⁺，0.07Eu³⁺，0.07Tm³⁺均为棒状结构，平均长度分别约为0.458和0.491 μm；通过研究GdVO₄∶Dy³⁺，Eu³⁺的发射光谱和衰减曲线，佐证了Dy³⁺到Eu³⁺的能量传递过程，并确定了其能量传递的机制为偶极-偶极相互作用。通过调节GdVO₄∶0.03Dy³⁺，xEu³⁺荧光粉中Eu³⁺的掺杂浓度实现了准白光输出（0.424，0.350）；调节GdVO₄∶0.03Dy³⁺，0.07Eu³⁺，yTm³⁺荧光粉中Tm³⁺的掺杂浓度，也实现了白光输出（0.346，0.301）。

关键词: 水热法钒酸钆能量传递白光发光二极管

基金项目: 吉林省科技攻关计划重大科技招标专项（No.20150203013YY）、吉林省科技发展项目（No.20130522126JH）、国家重点基础研究发展计划（973计划）项目（No.2012CB82580）、国家自然科学基金重点项目（No.51132006）和国家自然科学基金青年基金（No.21301020）资助。

Abstract: A series of GdVO₄:Dy³⁺, GdVO₄:Dy³⁺,Eu³⁺ and GdVO₄:Dy³⁺,Eu³⁺,Tm³⁺ phosphors were synthesized by the facile hydrothermal method using EDTA as mineralizer. The phase structure, morphology, photoluminescence properties, the energy transfer from Dy³⁺ to Eu³⁺ ions and the ⁴F_9/2→⁶H_15/2 transition of the Dy³⁺ ion in GdVO₄:0.03Dy³⁺, xEu³⁺ phosphors have been investigated in detail. The X-ray diffraction (XRD) patterns reveal that GdVO₄:0.03Dy³⁺, GdVO₄:0.03Dy³⁺,0.07Eu³⁺ and GdVO₄:0.03Dy³⁺,0.07Eu³⁺,0.07Tm³⁺ phosphors have pure tetragonal crystal structure. The GdVO₄:0.03Dy³⁺,0.07Eu³⁺ and GdVO₄:0.03Dy³⁺,0.07Eu³⁺,0.07Tm³⁺ phosphors are nanorod morphology with a mean length of about 0.458 and 0.491 μm as shown in the SEM images. By studying the decay times of GdVO₄:Dy³⁺,Eu³⁺ phosphors, the energy transfer process from Dy³⁺ to Eu³⁺ was proved. And the mechanism of energy transfer is proved to be the dipole-dipole (d-d) interaction. By adjusting the concentration of Eu³⁺ in the GdVO₄:0.03Dy³⁺, xEu³⁺ phosphors, the quasi white light (0.424, 0.350) is obtained. By adjusting the concentration of Tm³⁺ in the GdVO₄:0.03Dy³⁺,0.07Eu³⁺,yTm³⁺ phosphors, the white light (0.346, 0.301) is obtained.

Keywords: hydrothermal method GdVO₄ energy-transfer white light emitting diode

投稿时间：2015-12-22 修订日期：2016-06-22

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全文下载次数: 1975

李雪,邸克书,姚爽,闫景辉,康振辉.GdVO₄:Ln³⁺(Ln=Eu,Tm,Dy)荧光粉的水热法制备及其发光性能[J].无机化学学报,2016,32(9):1512-1518.

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