Preparation and Luminescent Properties of Sr3(PO4)2 ∶ Tb3+,Li+ Phosphor for White LED

CHEN Feng; YUAN Xi-ming; XIE An; XIONG Xiao-bo; LIU Li

doi:10.3788/YJYXS20112604.0448

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Preparation and Luminescent Properties of Sr₃(PO₄)₂ ∶ Tb³⁺,Li⁺ Phosphor for White LED

Material Physics & Chemistry | 更新时间：2020-08-12

- Preparation and Luminescent Properties of Sr₃(PO₄)₂ ∶ Tb³⁺,Li⁺ Phosphor for White LED
- Chinese Journal of Liquid Crystals and Displays Vol. 26, Issue 4, Pages: 448-454(2011)
- 作者机构：
  
  1. 中国地质大学材料科学与化学工程学院,湖北武汉,430074
  2. 厦门理工学院机械工程系,福建厦门 361024
- 作者简介：
- 基金信息：
- DOI：10.3788/YJYXS20112604.0448
  CLC： O482.31;TN104.3
- Received：13 February 2011，
  
  Revised：28 March 2011，
  
  Published Online：20 August 2011，
  
  Published：20 August 2011
- 稿件说明：
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陈凤, 袁曦明, 谢安, 熊小波, 刘丽. 白光LED用Sr3(PO4)2 ∶ Tb3+,Li+ 荧光粉的制备工艺及发光性能[J]. 液晶与显示, 2011,26(4): 448-454

CHEN Feng, YUAN Xi-ming, XIE An, XIONG Xiao-bo, LIU Li. Preparation and Luminescent Properties of Sr3(PO4)2 ∶ Tb3+,Li+ Phosphor for White LED[J]. , 2011,26(4): 448-454
陈凤, 袁曦明, 谢安, 熊小波, 刘丽. 白光LED用Sr3(PO4)2 ∶ Tb3+,Li+ 荧光粉的制备工艺及发光性能[J]. 液晶与显示, 2011,26(4): 448-454 DOI： 10.3788/YJYXS20112604.0448.

CHEN Feng, YUAN Xi-ming, XIE An, XIONG Xiao-bo, LIU Li. Preparation and Luminescent Properties of Sr3(PO4)2 ∶ Tb3+,Li+ Phosphor for White LED[J]. , 2011,26(4): 448-454 DOI： 10.3788/YJYXS20112604.0448.

摘要

采用沉淀-燃烧法结合超声波技术合成了小颗粒Sr

(PO

)

∶ Tb

荧光粉

测量了其光谱特性。在Sr

(PO

)

∶ Tb

体系中观察到Tb

的特征发射

峰值波长分别为489

542

584

620 nm

分别对应于Tb

的

、

和

跃迁

其中542 nm处的绿色发射最强。激发光谱由4f

宽带吸收(200~280 nm)和4f4f电子跃迁吸收(280~390 nm和475~500 nm)组成

可被近紫外发光二极管(NUV-LED)有效激发。采用

=Li

K)作为电荷补偿剂

结果表明:Li

作为电荷补偿剂使样品发光强度提高了31％

和K

的掺入则降低了粉体在近紫外区的吸收。

Abstract

A green-emitting phosphor Sr

(PO

)

∶ Tb

was prepared by a precipitation-combustion method combined with ultrasonic-disperse technology. Photoluminescence characteristics showed that the phosphor can be efficiently excited by N-UV(379 nm) light

exhibiting four sharp unattached emission peaks located at 489

542

584 and 620 nm

which originate from the typical

(

3) transition of Tb

=Li

K) was introduced into Sr

(PO

)

∶ Tb

as a charge compensator respectively. The results show that the incorporation of Li

ions could induce a remarkable improvement of the emission intensity. The highest emission intensity was observed with the compound of 0.15Li

co-doped Sr

(PO

)

∶ Tb

whose brightness was increased by 31％ in comparison with that of the Sr

(PO

)

∶ Tb

. Compared with Sr

(PO

)

∶ 0.6Tb

the relatively lower emission intensity was observed when Na

was doped.

关键词

Keywords

references

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