LED用KZn4（BO3）3：Eu3+荧光粉的合成与发光性能研究

孙雷; 张毅; 胡兴凯; 田浩

doi:10.3788/YJYXS20142906.0893

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LED用KZn₄（BO₃）₃：Eu³⁺荧光粉的合成与发光性能研究

材料物理和化学 | 更新时间：2020-08-12

- LED用KZn₄（BO₃）₃：Eu³⁺荧光粉的合成与发光性能研究
- Synthesis and photoluminescence properties of KZn₄(BO₃)₃：Eu³⁺red-emitting phosphor
- 液晶与显示 2014年29卷第6期页码：893-900
- 作者机构：
  
  1. 天津大学精密仪器与光电子工程学院, 天津 300072
  2. 南开大学电子信息与光学工程学院, 天津 300071
- 作者简介：
- 基金信息：
- DOI：10.3788/YJYXS20142906.0893
  中图分类号： O482.31
- 收稿日期：2014-06-26，
  
  修回日期：2014-07-11，
  
  网络出版日期：2014-07-30，
  
  纸质出版日期：2014-12-05
- 稿件说明：
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孙雷, 张毅, 胡兴凯, 田浩. LED用KZn4（BO3）3：Eu3+荧光粉的合成与发光性能研究[J]. 液晶与显示, 2014,29(6): 893-900

SUN Lei, ZHANG Yi, HU Xing-kai, TIAN Hao. Synthesis and photoluminescence properties of KZn4(BO3)3：Eu3+red-emitting phosphor[J]. , 2014,29(6): 893-900
孙雷, 张毅, 胡兴凯, 田浩. LED用KZn4（BO3）3：Eu3+荧光粉的合成与发光性能研究[J]. 液晶与显示, 2014,29(6): 893-900 DOI： 10.3788/YJYXS20142906.0893.

SUN Lei, ZHANG Yi, HU Xing-kai, TIAN Hao. Synthesis and photoluminescence properties of KZn4(BO3)3：Eu3+red-emitting phosphor[J]. , 2014,29(6): 893-900 DOI： 10.3788/YJYXS20142906.0893.

摘要

荧光粉转化法是目前制备白光LED的主流技术。但是商业化的荧光粉由于缺少红色部分或红色不稳定，使得制备出的LED灯泡颜色偏冷，因此研制低成本、性能稳定的红色荧光粉具有重要的意义。本项目以化学性质稳定、合成工艺温和的硼酸盐KZn

（BO

）

为基质，掺杂稀土离子来研究荧光粉的发光性能。通过高温固相法合成了一系列不同掺杂浓度的KZn

（BO

）

：Eu

，并测试了XRD衍射图谱，发射和激发光谱。研究表明Eu

离子倾向于占据Zn

格位。同时，KZn

（BO

）

：Eu

的最佳激发波长（393 nm）位于近紫外波段，适于用近紫外LED芯片激发来制备LED。 KZn

（BO

）

：Eu

的最强发射峰位于590 nm，属于

跃迁。当发生浓度猝灭时，Eu

-Eu

离子间的临界距离为3 nm。该荧光粉的色坐标为（0.629 7，0.369 9），色饱和较高。该物质是一种潜在的可被用于LED照明用的红色荧光粉。

Abstract

Phosphor transformation is the main method of producing white-light LEDs. However

most phosphors in the market are lack of red component or color stability

because most commercial LEDs produce cool white light. Thus it is realistic to search for new red phosphors with high stability and low cost. In this regard

borates

chemical stable and easily productive

have attracted our attention.The structure and photoluminescence properties of KZn

(BO

)

doped with Eu

are analyzed.We have synthesized a series of KZn

(BO

)

:Eu

with different doping concentration by solid state reactions. From the X-ray diffraction data

it is concluded that Eu

ions are inclined to occupy Zn

site in the structure of KZn

(BO

)

. And the PLE indicates that the best exciting wavelength(393 nm) of KZn

(BO

)

:Eu

is near ultraviolet

which makes it suitable for near-UV LEDs. According to the PL

the strongest peak locates at 590 nm which is ascribed to the transition of

.In addition

the quenching concentration of Eu

is about 1.5%

and the critical distance is about 3 nm.Finally

the CIE coordinates of KZn

(BO

)

:Eu

is(0.629 7

0.369 9)

which has high color saturation.The material is a potential red phosphor used for LEDs.

关键词

Keywords

references

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