荧光粉Ba5-3x/2B4O11∶xEu3+的制备及发光性能

doi:10.11944/j.issn.1000-0518.2019.05.180276

摘要/Abstract

摘要：

采用高温固相烧结法成功制备了Ba_5-3_x_/2B₄O₁₁∶xEu³⁺(x=0.02~0.22)荧光粉,利用XRD和SEM等对荧光粉进行了结构和形貌表征。在激发波长为393 nm的条件下,发射峰(596、621、657和706 nm)与Eu³⁺的⁵D₀-⁷F_J(J=1,2,3,4)电子跃迁相对应,其中621 nm最强发射峰由Eu³⁺离子⁵D₀→⁷F₂电偶极跃迁造成。文章还研究了Eu³⁺掺杂浓度对Ba_5-3_x_/2B₄O₁₁∶xEu³⁺发光性能的影响,结果表明,荧光粉的发光强度随着Eu³⁺掺杂量的增加呈现先增大后减小的趋势,Eu³⁺最佳掺杂量为0.16。

关键词: 高温固相反应法, 发光性能, 硼酸盐, Ba_5-3_x_/2B₄O₁₁∶xEu³⁺;, 稀土掺杂

Abstract:

The phosphors, Ba_5-3_x_/2B₄O₁₁∶xEu³⁺(x=0.02~0.22), were synthesized by high-temperature solid-state reaction method. The luminescence property of Ba_5-3_x_/2B₄O₁₁∶xEu³⁺ was studied in this paper. The phase and surface topographies of as-prepared samples were characterized by X-ray diffraction(XRD) and scanning electron microscope(SEM). This phosphor can be effectively excited at 393 nm and the emission peaks are located at 596 nm, 621 nm, 657 nm and 706 nm corresponding to the ⁵D₀-⁷F_J(J=1,2,3,4) transition of Eu³⁺ ions, respectively. Therein the ⁵D₀-⁷F₂ electric dipole transition of Eu³⁺ ions, which locates at 621 nm, is the strongest wave crest. Investigation of Eu³⁺ content-dependent emission spectra indicates that x=0.16 is the optimum doping content of Eu³⁺ ions in the Ba₅B₄O₁₁ host.

Key words: high-temperature solid-state reaction method, luminescence property, borate, Ba_5-3_x_/2B₄O₁₁∶xEu³⁺, rare earth doping

郝斌,赵文武,郁建元,刘进强,刘剑,董秀珍,王秀文. 荧光粉Ba_5-3_x_/2B₄O₁₁∶xEu³⁺的制备及发光性能[J]. 应用化学, 2019, 36(5): 548-553.

HAO Bin,ZHAO Wenwu,YU Jianyuan,LIU Jinqiang,LIU Jian,DONG Xiuzhen,WANG Xiuwen. Preparation and Luminescence Property of Ba_5-3_x_/2B₄O₁₁∶xEu³⁺ Phosphor[J]. Chinese Journal of Applied Chemistry, 2019, 36(5): 548-553.

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荧光粉Ba_5-3_x_/2B₄O₁₁∶xEu³⁺的制备及发光性能

Preparation and Luminescence Property of Ba_5-3_x_/2B₄O₁₁∶xEu³⁺ Phosphor

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