Luminescence Characteristics of LiCaBO<SUB>3</SUB> : Sm<SUP>3+</SUP> Phosphor

WANG Zhi-jun; LIU Hai-yan; ZHANG Kun; YANG Zhi-ping; GUO Qing-lin; LI Pan-lai; LI Xu; YANG

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Luminescence Characteristics of LiCaBO₃ : Sm³⁺ Phosphor

paper | 更新时间：2020-08-12

- Luminescence Characteristics of LiCaBO₃ : Sm³⁺ Phosphor
- Chinese Journal of Luminescence Vol. 31, Issue 1, Pages: 49-53(2010)
- 作者机构：
  
  1. 河北大学物理科学与技术学院,河北保定,071002
  2. 河北大学工商学院,河北保定,071002
- 作者简介：
- 基金信息：
- DOI：
  CLC： O482.31
- Received：01 April 2009，
  
  Revised：02 January 1900，
  
  Published Online：20 February 2010，
  
  Published：20 February 2010
- 稿件说明：
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WANG Zhi-jun, LIU Hai-yan, ZHANG Kun, et al. Luminescence Characteristics of LiCaBO₃ : Sm³⁺ Phosphor[J]. Chinese journal of luminescence, 2010, 31(1): 49-53.
DOI：

WANG Zhi-jun, LIU Hai-yan, ZHANG Kun, et al. Luminescence Characteristics of LiCaBO₃ : Sm³⁺ Phosphor[J]. Chinese journal of luminescence, 2010, 31(1): 49-53. DOI：

摘要

以CaCO

(99.9%)、Li

(99.9%)、Na

(99.9%) K

(99.9%)、H

(99.9%)、Sm

(99.9%)为原料

按所设计的化学计量比称取以上原料

在玛瑙研钵中混合均匀并充分研磨

装入刚玉坩埚

采用固相法制备LiCaBO

∶ Sm

材料;通过美国XRD6000型X射线衍射仪和日本岛津RF-540荧光分光光度计对材料的性能进行表征

所有测量均在室温条件下进行。LiCaBO

: Sm

材料的发射光谱由三个橙红色发射峰组成

主峰位于561

602

651 nm

分别对应Sm

的

5/2

→

5/2

、

5/2

→

7/2

和

5/2

→

9/2

跃迁;监测602 nm发射峰

得到其激发光谱由320~420 nm的宽激发带组成。由激发和发射光谱看出

LiCaBO

∶ Sm

能够有效地被紫外LED芯片激发

发射红色光。研究了Sm

浓度(

)对LiCa

材料发射强度的影响

结果表明:随Sm

浓度的增大

发射强度先增强后减弱

掺杂摩尔分数为3%时

发射强度最大

依据Dexter 理论

计算得出其浓度猝灭机理为电偶极-偶极相互作用。掺入电荷补偿剂Li

、Na

和K

均提高了LiCaBO

: Sm

材料的发射强度。

Abstract

LiCaBO

: Sm

phosphor was synthesized by solid state reaction and its luminescent properties were studied. The emission spectrum consists of three major orange-red emission bands at 561

602 and 651 nm

which correspond to the

5/2

→

5/2

→

7/2

and

5/2

→

9/2

typical transitions of Sm

respectively. The excitation spectrum for the strongest emission (602 nm) extends in 320~420 nm

which indicated that this phosphor can be effectively excited by near-ultraviolet light-emitting diodes. The influences of Sm

concentration (

) on the emission intensity of LiCa

phosphors were also investigated. The results showed that the intensity increases with increasing Sm

concentration

then decreases

and reaches the maximal value at 3% Sm

. And the concentration self-quenching mechanism is the d-d interaction according to Dexter theory. The emission intensity of LiCaBO

: Sm

can be enhanced by doping charge compensator Li

关键词

Keywords

references

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⁰

Luminescence Characteristics of LiCaBO3 : Sm3+ Phosphor

DOI：

摘要

Abstract

关键词

Keywords

references

Luminescence Characteristics of LiCaBO₃ : Sm³⁺ Phosphor