化工新型材料

化工新型材料 ›› 2022, Vol. 50 ›› Issue (11) : 121-125. DOI: 10.19817/j.cnki.issn1006-3536.2022.11.024

新材料与新技术

非稀土离子Bi³⁺掺杂钒酸盐发光材料的制备及性能研究

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Preparation and properties of non-rare earth ion Bi³⁺ doped vanadate luminescent materials

Zeng Huihui¹, Shi Zhiying¹, Zhang Ping², Duan Zhiming², Huang Shuyun¹, Zhu Wentao¹, Shi Weiguo¹

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Received		Published
2021-07-15		2022-11-20
Issue Date	Revised Date
2022-11-30	2021-07-15

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摘要

商用荧光粉钇铝石榴石(Y₃Al₅O₁₂∶Ce³⁺,简称YAG)具有发光效率高、易于合成等优点,但因其缺少红光成分导致半导体发光二极管(LED)显色指数偏低,色温偏高。为了解决这种不足,合成了一系列非稀土离子Bi³⁺掺杂钒酸盐材料,并对其光学性能进行研究。结果表明:水热法合成的GdVO₄∶Bi³⁺分散均匀、粒径为50nm左右,其发射峰在535～680nm范围,最强发射峰位于568nm,对应于Bi³⁺的 ³P₁→¹S₀特征跃迁,呈现出Bi³⁺特征的黄色荧光。与主流白光LED荧光粉YAG相比较,GdVO₄∶Bi³⁺荧光光谱向红光方向移动了120nm左右,最强发射峰红移了约30nm。基于此,首次探讨了GdVO₄∶Bi³⁺黄色荧光粉在白光LED中的应用。

Abstract

Commercial phosphor YAG has the characteristic of high luminous efficiency and simple synthesis,but lacks red-emission component,which leads to the low color rendering index and high color temperature of LED.In order to address the deficiency,we synthesized a series of Bi³⁺-doped vanadate phosphor,and investigated their optical properties.The test results showed that GdVO₄∶Bi³⁺ synthesized by hydrothermal method dispersed uniformly and had a size of about 50nm.Its emission spectrum ranged from 535nm to 680nm with the strongest emission of 568nm,exhibiting the yellow characteristic fluorescence,which was corresponding to the transition from ³P₁ to ¹S₀ of Bi³⁺.Compared with that of YAG phosphor,the fluorescence spectrum of GdVO₄∶Bi³⁺ shifted about 120nm to the red direction,and its strongest emission peak shifted about 30nm too.Based on these studies,for the first time,we discussed the application of GdVO₄∶Bi³⁺ phosphor in white LED.

关键词

钒酸盐 / 三价铋离子发光 / 黄色荧光粉 / 白光半导体发光二极管

Key words

vanadate / Bi³⁺ luminescence / yellow phosphor / white LED

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非稀土离子Bi³⁺掺杂钒酸盐发光材料的制备及性能研究[J]. 化工新型材料, 2022, 50(11): 121-125 DOI:10.19817/j.cnki.issn1006-3536.2022.11.024

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