红色LiMBO3 : Re3+(Re=Eu, Sm) 发光材料的特性

李盼来; 杨志平; 王志军; 郭庆林; 李 旭; 杨艳民

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红色LiMBO₃ : Re³⁺(Re=Eu, Sm) 发光材料的特性

论文 | 更新时间：2020-08-12

- 红色LiMBO₃ : Re³⁺(Re=Eu, Sm) 发光材料的特性
- Luminescence Characteristics of Red LiMBO₃ : Re³⁺(Re=Eu, Sm) Phosphor
- 发光学报 2009年30卷第2期页码：179-183
- 作者机构：
  
  1. College of Physics Science
  2. Technology, Hebei University
- 作者简介：
- 基金信息：
- DOI：
  中图分类号： O482.31
- 纸质出版日期：2009-4-30，
  
  网络出版日期：2009-4-30，
  
  收稿日期：2008-9-25，
  
  修回日期：1900-1-2，
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李盼来, 杨志平, 王志军, 等. 红色LiMBO₃ : Re³⁺(Re=Eu, Sm) 发光材料的特性[J]. 发光学报, 2009,30(2):179-183.

LI Pan-lai, YANG Zhi-ping, WANG Zhi-jun, et al. Luminescence Characteristics of Red LiMBO₃ : Re³⁺(Re=Eu, Sm) Phosphor[J]. Chinese Journal of Luminescence, 2009,30(2):179-183.
李盼来, 杨志平, 王志军, 等. 红色LiMBO₃ : Re³⁺(Re=Eu, Sm) 发光材料的特性[J]. 发光学报, 2009,30(2):179-183. DOI：

LI Pan-lai, YANG Zhi-ping, WANG Zhi-jun, et al. Luminescence Characteristics of Red LiMBO₃ : Re³⁺(Re=Eu, Sm) Phosphor[J]. Chinese Journal of Luminescence, 2009,30(2):179-183. DOI：

摘要

采用固相法制备了红色LiM(M=Ca

Ba)BO

: Re

(Re=Eu

Sm)发光材料

研究了材料的发光性能。研究发现LiM(M=Ca

Ba)BO

: Eu

材料呈现多峰发射

最强发射分别位于610

615

613 nm处

分别监测这三个最强峰

所得激发光谱峰值位于369

400

470 nm。LiM(M=Ca

Ba)BO

: Sm

材料也呈多峰发射

分别对应Sm

的

5/2

→

5/2

、

5/2

→

7/2

和

5/2

→

9/2

跃迁发射;分别监测602

599

597 nm三个最强发射峰

所得激发光谱峰值位于374

405 nm。研究了激活剂浓度对材料发射强度的影响

结果随激活剂浓度的增大

发射强度先增强后减弱

即

存在浓度猝灭效应。实验表明

加入电荷补偿剂Li

、Na

或K

均可提高LiM(M=Ca

Ba)BO

: Re

(Re=Eu

Sm)材料的发射强度。

Abstract

LiM(M=Ca

Ba)BO3∶Re3+(Re=Eu

Sm) phosphors were synthesized by solid state reaction

and their luminescence characteristics were investigated. The emission spectra of LiM(M=Ca

Ba)-BO3∶Eu3+ phosphors show several bands

and the main emission peaks correspond to the 5D0→7F1(590

595 and 594 nm)

5D0→7F2(610

615 and 613 nm) and 5D0→7F3(654

651 and 651 nm) typical transitions of Eu3+. The excitation spectra show that these phosphors can be effectively excited by 369

400 and 470 nm. The emission spectra of LiM(M=Ca

Ba)BO3∶Sm3+ exhibit several bands

corresponding to 4G5/2→6H5/2(561

563 and 560 nm)

4G5/2→6H7/2(602

599 and 597 nm) and 4G5/2→6H9/2(651

647 and 644 nm) typical transitions of Sm3+. The excitation spectra show that these phosphors can be effectively excited by 374 and 405 nm. Therefore

the two kinds of phosphors are promising red phosphors for white LEDs. Effects of activation and charge compensation on the luminescence intensities of LiM(M=Ca

Ba)BO3∶Re3+(Re=Eu

Sm) phosphors were studied

and the results show that the intensities were obviously influenced. Under the conditions of charge compensator Li+

Na+ or K+ incorporated in these phosphors

the emission intensities of these phosphors were enhanced. The all results illuminate that LiM(M=Ca

Ba)BO3∶Re3+(Re=Eu

Sm) phosphors are promising red phosphors for white LEDs.

关键词

发光LiM(M=CaSrBa)BO3Eu3+Sm3+

Keywords

references

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