Optical Properties of Eu2+-activated Blue-emitting Phosphor LiCaPO4 under Ultraviolet Excitation

YANG Zhi-ping; WANG Feng-he; GUO Ying-nan; LI Xu; MA Xin; WEN Jian-wei

doi:null

您当前的位置：

首页 >

文章列表页 >

Optical Properties of Eu²⁺-activated Blue-emitting Phosphor LiCaPO₄ under Ultraviolet Excitation

paper | 更新时间：2020-08-12

- Optical Properties of Eu²⁺-activated Blue-emitting Phosphor LiCaPO₄ under Ultraviolet Excitation
- Chinese Journal of Luminescence Vol. 31, Issue 2, Pages: 181-184(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 October 2009，
  
  Revised：1900-1-2，
  
  Published Online：30 April 2010，
  
  Published：30 April 2010
- 稿件说明：
移动端阅览
YANG Zhi-ping, WANG Feng-he, GUO Ying-nan, et al. Optical Properties of Eu²⁺-activated Blue-emitting Phosphor LiCaPO₄ under Ultraviolet Excitation[J]. Chinese Journal of Luminescence, 2010, 31(2): 181-184.
DOI：

YANG Zhi-ping, WANG Feng-he, GUO Ying-nan, et al. Optical Properties of Eu²⁺-activated Blue-emitting Phosphor LiCaPO₄ under Ultraviolet Excitation[J]. Chinese Journal of Luminescence, 2010, 31(2): 181-184. DOI：

摘要

采用高温固相法合成了LiCaPO

: Eu

蓝色发光粉

并对其发光特性进行了研究。该发光粉发射峰值位于470 nm

属于Eu

的4f

→4f的特征跃迁发射

与结构相似的LiSrPO

: Eu

和NaBaPO

: Eu

相比其峰值有明显红移。Eu

在LiCaPO

晶体中可被250~440 nm光有效激发

这与紫外发光二极管的发射光谱(350~410 nm)匹配。考察了Eu

的掺杂浓度对发光强度的影响

最佳掺杂摩尔分数为5%

摩尔分数超过5%后发生猝灭现象。浓度猝灭机理为电多极-电多极的交互作用。LiCaPO

: Eu

是适合UV-LED管芯激发的白光发光二极管用高亮度蓝色发光粉。

Abstract

A novel blue-emitting phosphor LiCaPO

: Eu

for LEDs was prepared by high temperature solid-state reaction and its luminescent properties were investigated. The emission spectrum shows a single intense band centered at 470 nm

which corresponds to the 4f

→4f

transition of Eu

. Comparing with LiSrPO

: Eu

and NaBaPO

: Eu

the emission spectrum shows a red shift obviously. It is caused by the decrease of cationic radii which change the degree of Eu

energy splitting and affect the electron cloud expansion. The excitation spectrum is a broad band extending in 250~440 nm

which matches the emission of ultraviolet light-emitting diodes (UV-LEDs) well. The effect of doped Eu

content on the emission intensity of LiCaPO

: Eu

was also investigated. Different Eu

contents have little effort on the emission spectrum

but the emission intensity shows a great different. The emission intensity is enhanced with the increase of the Eu

content

and the optimal doping content is 5%. Concentration quenching occurs when the Eu

content is beyond 5%

as a result of multipole-multipole interaction. The LiCaPO

: Eu

phosphor is a potential blue-emitting phosphor for white-emitting LEDs.

关键词

Keywords

references

. Takahashi K, Hirosaki N, Xie R J, et al. Luminescence properties of blue La1-xCexAl(Si6-zAlz)(N10-zOz)(z-1) oxy-nitride phosphors and their application in white light-emitting diode [J]. Appl. Phys. Lett., 2007, 91 (9):091923-1-3.

. Li P L, Yang Z P, Wang Z J, et al. Luminescence characteristic of red LiM (M=Ca, Sr, Ba) BO3 : Re3+(Re=Eu, Sm) phosphor [J]. Chin. J. Lumin. (发光学报), 2009, 30 (2):179-183 (in Chinese).

. Yang Z P, Li X, Yang Y, et al. The influence of different conditions on the luminescent properties of YAG : Ce phosphor formed by combustion [J]. J. Lumin., 2007, 122-123 :707-709.

. Guo R, Zeng R J, Wu Y, et al. Preparation and photoluminescence properties of YAG : Ce3+ spherical phosphor nano-powders by the micro emulsion method [J]. J. Chin. Ceramic Society (硅酸盐学报), 2008, 36 (3):352-357 (in Chinese).

. Xia G D, Zhou S M, Zhang J J, et al. Structural and optical properties of YAG : Ce3+ phosphors by sol-gel combustion method [J]. J. Cryst. Growth, 2005, 279 (3-4):357-362.

. Li P L, Yang Z P, Wang Z J, et al. Preparation and spectrum characteristics of Sr2SiO4 : Eu3+ phosphor [J]. Acta Phys. Chem. Sin. (物理化学学报), 2008, 24 (1):179-182 (in Chinese).

. Lucas S, Champion E, Bregiroux D, et al. Rare earth phosphate powders RePO4·nH2O(Re=La, Ce or Y)-part I:synthesis and characterization [J]. J. Solid State Chem., 2004, 177 (4-5):1302-1311.

. Li Z H, Chen H B, Cao L C, et al. Crystal Chemistry (结晶化学) [M]. The First Edition, Hangzhou: Zhejiang University Press, 1989, 111(in Chinese).

. Blasse G. Energy transfer in oxidic phosphors [J]. Philips Res. Rep., 1969, 24 :131-136.

. Dexter D L. A theory of sensitized luminescence in solids [J]. J. Chem. Phys., 1953, 21 (5):836-850.

. Liu X, Lin C, Lin J. White light emission from Eu3+ in CaIn2O4 host lattices [J]. Appl. Phys. Lett., 2007, 90 (8):081904-1-3.

Views

289

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Luminescence Characteristics of Eu²⁺ Activated Strontium Silicate Phosphors

Research Progress of Composite Structure Phosphor Materials for Solid-state Lighting

Luminescence Properties and Application of Ce³⁺ Doped Ba₃Y₂(BO₃)₄ Phosphor

Advance in Mn⁴⁺-doped Oxyfluoride Red-emitting Phosphors for WLED

Improving Moisture Resistance of K₂SiF₆∶Mn⁴⁺ via Passivation Effect of Lactobionic Acid

Related Author

WANG Zhi-jun

YANG Zhi-ping

WANG Ying

LI Pan-lai

GUO Qing-lin

LI Xu

QI Xingyu

WU Lan

Related Institution

河北大学物理科学与技术学院

School of Electromechanical Engineering， Henan University of Technology

SongShan Laboratory

Department of Physics， Changchun Normal University

Key Laboratory of Luminescence Science and Technology， Chinese Academy of Sciences & State Key Laboratory of Luminescence and Applications， Changchun Institute of Optics， Fine Mechanics and Physics， Chinese Academy of Sciences

AI问答

Address：No.3888 Dong Nanhu Road, Changchun, Jilin, China Postal code：130033
Tel：0431-86176862 Email：fgxbt@126.com
Technical support is provided by Beijing Founder electronics co., LTD 吉ICP备11002662号-17 京公网安备11010802024621
It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.

⁰