Luminescent Properties of LiSrPO<SUB>4</SUB> : T b<SUP>3+</SUP> Green Phosphor

YANG Zhi-ping; MA Xin; SONG Zhao-feng; WANG Fen-he; GUO Ying-nan; WEN Jian-wei

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Luminescent Properties of LiSrPO₄ : T b³⁺ Green Phosphor

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- Luminescent Properties of LiSrPO₄ : T b³⁺ Green Phosphor
- Chinese Journal of Luminescence Vol. 31, Issue 2, Pages: 185-187(2010)
- 作者机构：
  
  1. 河北大学物理科学与技术学院发光与显示研究所,河北保定,071002
  2. 河北大学电子信息工程学院,河北保定,071002
- 作者简介：
- 基金信息：
- DOI：
  CLC： O482.31
- Received：25 November 2009，
  
  Revised：02 January 1900，
  
  Published Online：30 April 2010，
  
  Published：30 April 2010
- 稿件说明：
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YANG Zhi-ping, MA Xin, SONG Zhao-feng, et al. Luminescent Properties of LiSrPO₄ : T b³⁺ Green Phosphor[J]. Chinese journal of luminescence, 2010, 31(2): 185-187.
DOI：

YANG Zhi-ping, MA Xin, SONG Zhao-feng, et al. Luminescent Properties of LiSrPO₄ : T b³⁺ Green Phosphor[J]. Chinese journal of luminescence, 2010, 31(2): 185-187. DOI：

摘要

采用高温固相法合成了LiSrPO

: Tb

发光材料

测定了荧光粉的激发光谱和发射光谱

该荧光粉的激发主峰位于330~390 nm

属于4f→4f电子跃迁吸收

与UVLED管芯相匹配。在紫外激发下的发射峰由位于490 nm(

)、545 nm(

)、585 nm(

)、622 nm(

)的四组线状峰构成

对应Tb

的特征跃迁

其中545 nm处最强

呈现绿色发光。考察了掺杂离子浓度对样品发光效率的影响

的最佳掺杂摩尔分数为9%

分析了其自身浓度猝灭机理

探讨了敏化剂Ce

离子的加入对荧光粉发光强度的影响。LiSrPO

: Tb

是一种适用于白光LED的绿色荧光材料。

Abstract

The LiSrPO

: Tb

green phosphor was synthesized by the general high temperature solid-state reaction and an efficient green emission under near-ultraviolet excitaion was observed. The X-ray diffraction pattern indicated that pure LiSrPO

: Tb

phosphor was obtained. Its luminescence properties were investigated and showed four major emission peeks locating at 490

545

585 and 622 nm

corresponding to the

→

and

→

typical transitions of Tb

respectively

and the strongest one appears at 545 nm. The excitation spectrum contains a broad band extending in 200~400 nm

which is coupled well with the emission of ultraviolet light-emitting diodes (UVLEDs). The influence of the doped content of Tb

ions on the emission intensity was also investigated and the concentration quench occurs when the doped content of Tb

ions is beyond 9%

which can be explained by electric multipole-multipole interaction according to Dexters theory. It was also found that the Ce

ions in the system can make the emission intensity of LiSrPO

: Tb

increase. The value of emission intensity reaches the maximum when the concentration of Ce

ions is 3%. In conclustion

the LiSrPO

: Tb

is a potential green-emitting phosphor for white LEDs.

关键词

Keywords

references

. Liu Jie, Sun Jiayue, Shi Chunshan. The development of the white converter based on LED [J]. Chemistry (化学), 2005, 68 (6):417-424 (in Chinese).

. Nakamura S, Fasol G. The Blue Laser Diode: GaN Based Light Emitters and Lasers [M]. Berlin: Springer, 1996.

. Kim J S, Jeonp E, Park Y H, et al. White-light generation through ultraviolet-emitting diode and white-emitting phosphor [J]. Appl. Phys. Lett., 2004, 85 (17):3696-3698.

. Yu Yaqin, Li Mei, Liu Shuzhen. Synthesis and properties of lanthanide element orthophosphate [J]. J. Chin. Ceramic Soc. (硅酸盐学报), 1989, 17 (6):485-489 (in Chinese).

. Yang Zhiping, Zhao Fangliang, Li Xiaoning, et al. Luminescence properties of Sr3B2O6 ∶ Tb3+ , Li+ green phosphor [J]. Chin. J. Lumin. (发光学报), 2008, 29 (6):941-944 (in Chinese).

. Yang Zhiping, Wang Shaoli, Yang Guangwei, et al. Preparation and luminescent properties of green NaCaPO4 ∶ Tb3+ phosphor [J]. Chin. J. Lumin.(发光学报), 2008, 29 (1):81-83 (in Chinese).

. Dexter D L. Theory of concentration quenching in inorganic phosphors [J]. J. Chem. Phys., 1954, 22 (6):1063-1070.

. Huang Shihua. Lou Liren. Concentration dependence of sensitizer fluorescence intensity in energy transfer [J]. Chin. J. Lumin. (发光学报), 1990, 11 (1):1-7 (in Chinese).

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⁰

Luminescent Properties of LiSrPO4 : T b3+ Green Phosphor

DOI：

摘要

Abstract

关键词

Keywords

references

Luminescent Properties of LiSrPO₄ : T b³⁺ Green Phosphor