LEDs用KSr4(BO3)3:Eu2+荧光粉的发光性质

张佳; 陈贵宾

doi:10.3788/fgxb20143512.1432

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LEDs用KSr₄(BO₃)₃:Eu²⁺荧光粉的发光性质

材料合成及性能 | 更新时间：2020-08-12

- LEDs用KSr₄(BO₃)₃:Eu²⁺荧光粉的发光性质
- Luminescence Properties of KSr₄(BO₃)₃:Eu²⁺ for Light-emitting Diodes
- 发光学报 2014年35卷第12期页码：1432-1436
- 作者机构：
  
  淮阴师范学院物理与电子电气工程学院, 江苏淮安 223300
- 作者简介：
- 基金信息：
  
  国家自然科学基金(NSFC11174101)资助项目()
- DOI：10.3788/fgxb20143512.1432
  中图分类号： O482.31
- 纸质出版日期：2014-12-3，
  
  收稿日期：2014-4-28，
  
  修回日期：2014-10-5，
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张佳, 陈贵宾,. LEDs用KSr4(BO3)3:Eu2+荧光粉的发光性质[J]. 发光学报, 2014,35(12): 1432-1436

ZHANG Jia, CHEN Gui-bin,. Luminescence Properties of KSr4(BO3)3:Eu2+ for Light-emitting Diodes[J]. Chinese Journal of Luminescence, 2014,35(12): 1432-1436
张佳, 陈贵宾,. LEDs用KSr4(BO3)3:Eu2+荧光粉的发光性质[J]. 发光学报, 2014,35(12): 1432-1436 DOI： 10.3788/fgxb20143512.1432.

ZHANG Jia, CHEN Gui-bin,. Luminescence Properties of KSr4(BO3)3:Eu2+ for Light-emitting Diodes[J]. Chinese Journal of Luminescence, 2014,35(12): 1432-1436 DOI： 10.3788/fgxb20143512.1432.

摘要

采用固相法合成了KSr

(BO

)

(KSB:

)荧光粉

通过X射线粉末衍射(XRD)、扫描电镜(SEM)及光致发光光谱分别研究了样品的晶相、形貌及发光性质.XRD研究结果表明制备的样品为正交晶系的KSr

(BO

)

单相.当Eu

的掺杂摩尔分数

为1.5%时

在激发光谱250~550 nm范围内观察到了两个宽带激发

可归属为Eu

的4f

-4f

跃迁;在400 nm激发下

发射谱呈现出一个不对称的黄色发射带

峰值位于560 nm处

可归属于Eu

的4f

-4f

跃迁.因在KSr

(BO

)

化合物中存在3个Sr格位

根据其光谱特征可推测发射谱中非对称的发射带来源于多个Eu

发光中心.

Abstract

KSr

(BO

)

(KSB:

) phosphors were synthesized by solid-state reaction method. The phase

morphology

and luminescence properties of the samples were characterized by using XRD

SEM

and photoluminescence spectra. XRD results show that the as-prepared samples are orthorhombic KSr

(BO

)

single-phase. When

=1.5%

two broad bands are observed from 250 to 550 nm in the excitation spectra

which are attributed to 4f

-4f

transition of Eu

. Under the excitation of 400 nm

the emission spectrum shows an asymmetric yellow emission band around 560 nm

attributed to 4f

-4f

transition of Eu

. Because of three Sr crystallographic sites in KSr

(BO

)

compound

one can infer that the asymmetric emission results from multiple Eu

centers by the spectral characteristics.

关键词

KSr4(BO3)3:Eu2+发光二极管荧光粉

Keywords

KSr4(BO3)3:Eu2+LEDsphosphor

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