欢迎访问《人工晶体学报》官方网站,今天是 分享到:

人工晶体学报 ›› 2021, Vol. 50 ›› Issue (9): 1694-1701.

• 研究论文 • 上一篇    下一篇

Li(Na, K)Ba(Sr, Ca)B9O15∶Eu3+荧光粉的制备及发光性能

王俣欢, 陈永杰, 张文花, 耿秀娟, 杨英   

  1. 沈阳化工大学,辽宁省稀土化学及应用重点实验室,沈阳 110142
  • 收稿日期:2021-06-17 出版日期:2021-09-15 发布日期:2021-10-15
  • 通讯作者: 陈永杰,博士,教授。E-mail:cyj200507@aliyun.com
  • 作者简介:王俣欢(1997—),女,辽宁省人,硕士研究生。E-mail:wangyuhuan2019@163.com

Synthesized and Luminescent Properties of Li(Na, K)Ba(Sr, Ca)B9O15∶Eu3+ Phosphor

WANG Yuhuan, CHEN Yongjie, ZHANG Wenhua, GENG Xiujuan, YANG Ying   

  1. Key Laboratory of Rare Earth Chemistry and Application of Liaoning Province, Shenyang University of Chemical Technology, Shenyang 110142, China
  • Received:2021-06-17 Online:2021-09-15 Published:2021-10-15

摘要: 采用高温固相法在空气气氛下合成了一系列Eu3+掺杂硼酸盐基质荧光粉。用X射线衍射、荧光光谱以及色坐标等手段对荧光粉的晶相和发光性能进行表征。通过LiBaB9O15中的碱金属以及碱土金属之间的相互取代,研究了基质组成的改变对荧光粉发光性能的影响。结果表明,在Li(Na,K)Ba(Sr,Ca)B9O15∶0.07Eu3+系列荧光粉中,LiSrB9O15∶0.07Eu3+荧光粉的发光强度最强。考察了煅烧温度、保温时间和Eu3+掺杂量对LiSrB9O15∶Eu3+荧光粉晶相和发光性能的影响,煅烧温度为750 ℃,保温时间为1~5 h时,样品的结晶性均良好。Eu3+掺杂量为0.52时,LiSrB9O15∶Eu3+荧光粉的发光强度最强。当x≥0.42(x=0.42,0.47,0.52,0.57)时,LiSrB9O15xEu3+色坐标均接近标准红光(0.67,0.33)。比较了LiSrB9O15xEu3+(x=0.02~0.57)荧光粉的611 nm(5D07F2)和586 nm(5D07F1)处发射峰相对强度比值R,R值变化不大,说明多数Eu3+在晶格中处于非反演对称中心的格位;比较了LiSrB9O15∶0.52Eu3+荧光粉和商用Y2O3∶Eu3+荧光粉的发光特性,在260 nm波长激发下,LiSrB9O15∶0.52Eu3+荧光粉的发光强度弱于Y2O3∶Eu3+荧光粉;在362 nm和394 nm波长激发下,LiSrB9O15∶0.52Eu3+荧光粉的发光强度强于Y2O3∶Eu3+荧光粉。

关键词: 硼酸盐基质, 高温固相法, 荧光粉, 发光性能, Eu3+掺杂

Abstract: A series of Eu3+-doped borate-based phosphors were synthesized by high temperature solid-state method in air atmosphere. The crystal phase and luminescence properties of phosphors were characterized by X-ray diffraction, fluorescence spectroscopy and chromaticity coordinates. Through the mutual substitution between alkali metals and alkaline earth metals in the LiBaB9O15, the effect of the change of the matrix composition on the luminescence properties of phosphors was investigated. In the series of Li(Na, K)Ba(Sr, Ca)B9O15∶0.07Eu3+phosphors, LiSrB9O15∶0.07Eu3+phosphor has the strongest emission intensity. The effects of calcination temperature, holding time and Eu3+ doping concentration on the crystal phase and luminescence properties of LiSrB9O15∶Eu3+ phosphor were investigated. When the calcination temperature is 750 ℃ and holding time is 1~5 h, the crystallinity of all the samples is good. When the Eu3+ doping concentration is 0.52, LiSrB9O15∶Eu3+ phosphor has the strongest luminescence intensity. When x≥0.42(x=0.42, 0.47, 0.52, 0.57), the color coordinates of LiSrB9O15xEu3+ are close to the standard red light (0.67, 0.33). The relative intensity ratio R of the emission peak at 611 nm (5D07F2) and 586 nm (5D07F1) of LiSrB9O15xEu3+(x=0.02~0.57) phosphors were compared. R value is not changed obviously, the majority of Eu3+ in the crystal lattice locates in inversion symmetry center sites. The luminescence properties of the LiSrB9O15∶0.52Eu3+ phosphor and the commercial Y2O3∶Eu3+ phosphor were compared, the luminescence intensity of LiSrB9O15∶0.52Eu3+phosphor is weaker than Y2O3∶Eu3+ phosphor under excitation of 260 nm wavelength, stronger than Y2O3∶Eu3+ phosphor under excitation of 362 nm and 394 nm wavelength.

Key words: borate matrix, high temperature solid-state method, phosphor, luminescence property, Eu3+ doping

中图分类号: