非稀土离子Bi^(3+)掺杂钒酸盐发光材料的制备及性能研究  

Preparation and properties of non-rare earth ion Bi^(3+)doped vanadate luminescent materials

作　　者：曾慧慧[1] 石志英 张萍 段志明 黄淑云[1] 祝文涛 施卫国[1] Zeng Huihui;Shi Zhiying;Zhang Ping;Duan Zhiming;Huang Shuyun;Zhu Wentao;Shi Weiguo(Jiangxi Key Laboratory of Industrial Ceramics,Pingxiang University,Pingxiang 337055;Xiangdong Middle School,Pingxiang 337055)

机构地区：[1]萍乡学院,江西省工业陶瓷重点实验室,萍乡337055 [2]湘东中学,萍乡337055

出　　处：《化工新型材料》2022年第11期121-125,129,共6页New Chemical Materials

基　　金：江西省自然科学基金项目(20202BABL203019);国家自然科学基金(22066019,21705083)。

摘　　要：商用荧光粉钇铝石榴石(Y3Al5O12∶Ce^(3+),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Bi^(3+)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GdVO_(4)∶Bi^(3+)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Bi^(3+)的3P1→1S0特征跃迁,呈现出Bi^(3+)特征的黄色荧光。与主流白光LED荧光粉YAG相比较,GdVO_(4)∶Bi^(3+)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GdVO_(4)∶Bi^(3+)黄色荧光粉在白光LED中的应用。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 Bi^(3+)-doped vanadate phosphor,and investigated their optical properties.The test results showed that GdVO_(4)∶Bi^(3+)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 Bi^(3+).Compared with that of YAG phosphor,the fluorescence spectrum of GdVO_(4)∶Bi^(3+)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 GdVO_(4)∶Bi^(3+)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 

分 类 号：O657.39[理学—分析化学]