Page 53 - 《精细化工》2020年第1期

第 37 卷第 1 期 精 细 化 工 Vol.37, No.1
202 0 年 1 月 FINE CHEMICALS Jan. 2020

功能材料
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高效红色荧光粉 Li 1–x AlSiO 4+x :xEu 的

制备与发光性能

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温慧霞，许成功，樊 彬，李红喜，旦真什姐，赵文玉
（内蒙古科技大学 化学与化工学院，内蒙古 包头 014010）

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摘要：以碳酸锂、氧化铝、二氧化硅、Eu 2 O 3 为原料，采用传统高温固相法在 1150 ℃制备系列 Eu 掺杂 LiAlSiO 4
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红色荧光粉 Li 1–x AlSiO 4+x :xEu (x=0.05~0.18)。利用 XRD、SEM 和光致发光光谱分别对其晶体结构，粉体形貌和
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发光性能进行了表征。考察了 Eu 掺杂量对所制红色荧光粉发光强度、色温、色调的影响。结果表明：Eu 掺
杂摩尔分数低于 15.0%时，样品为单一基质；样品可以被近紫外 350~420 nm 波段高效激发，最强激发发射峰位
3+ 3+ 5 7 5 7
于 394 nm。发射光谱呈现出 Eu 的特征峰，谱带峰值在 593、616 nm 处，分别对应于 Eu 的 D 0 → F 1 、 D 0 → F 2
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特征跃迁。最强发射对应 Eu 掺杂摩尔分数为 12.0%，浓度猝灭主要是因为四极-四极（q-q）相互作用，CIE 坐
标为（0.6464，0.3526），可应用于近紫外芯片激发 LED 用红色荧光粉。
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关键词：红色荧光粉；Eu 掺杂；高温固相法；白光 LED；浓度猝灭；功能材料
中图分类号：O482.31；TQ422 文献标识码：A 文章编号：1003-5214 (2020) 01-0039-06

Preparation and luminescence properties of highly efficient
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red phosphor Li 1–xAlSiO 4+x:xEu

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Wen Huixia, Xu Chenggong, Fan Bin, Li Hongxi, Danzhen Shijie, Zhao Wenyu
（School of Chemistry and Chemical Engineering, Inner Mongolia University of Science & Technology, Baotou 014010, Inner
Mongolia, China）

Abstract: Lithium carbonate, aluminium oxide, silicon dioxide, europium(III) oxide were used as raw
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materials to prepare a series of Eu ion-doped LiAlSiO 4 red phosphor Li 1–xAlSiO 4+x:xEu (x=0.05~0.18) by
a conventional high-temperature solid-phase method at 1150 ℃. The crystal structure, particle morphology
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and luminescence properties of Li 1–x AlSiO 4+x :xEu were characterized by XRD, SEM and photoluminescence
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spectrum. The influence of amount of Eu doping on the luminescence intensity, color temperature and hue
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of the red phosphors was investigated. The results indicated that the sample was single host when the Eu
doping molar fraction was below 15.0%. The sample could be excited by the near-ultraviolet band of
350~420 nm, and the strongest excitation peak was located at 394 nm. The emission spectrum showed
5
7
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5
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characteristic peaks of Eu , at 593 nm and 616 nm, corresponding to D 0→ F 1, D 0→ F 2 transitions,
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respectively. The optimal doping molar fraction of Eu corresponding to the strongest emission of sample
was 12.0%. The occurrence of concentration quenching was mainly due to the quadrupole-quadrupole (q-q)
interaction. The CIE coordinate of this sample is (0.6464, 0.3526), thus, it can be a candidate of red
phosphor for NUV excited LEDs.
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Key words: red phosphor; Eu doping; high-temperature solid-state method; white LEDs; concentration
quenching; functional materials

收稿日期：2019-05-14; 定用日期：2019-07-09; DOI: 10.13550/j.jxhg.20190430
基金项目：内蒙古自然科学基金（2018MS02002）
作者简介：温慧霞（1994—），女，硕士生，E-mail：710403630@qq.com。联系人：赵文玉（1980—），女，副教授，E-mail：
zhaowenyu2011@hotmail.com。