Photoluminescence Characteristics of Na4Ca3(AlO2)10∶Eu2+,Mn2+

WANG Xue; TIAN Lian-hua

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Photoluminescence Characteristics of Na₄Ca₃(AlO₂)₁₀∶Eu²⁺,Mn²⁺

paper | 更新时间：2020-08-12

- Photoluminescence Characteristics of Na₄Ca₃(AlO₂)₁₀∶Eu²⁺,Mn²⁺
- Chinese Journal of Luminescence Vol. 32, Issue 11, Pages: 1109-1114(2011)
- 作者机构：
  
  延边大学理学院物理系, 吉林延吉,133002
- 作者简介：
- 基金信息：
- DOI：
  CLC： O482.31
- Received：06 April 2011，
  
  Revised：23 June 2011，
  
  Published Online：22 November 2011，
  
  Published：22 November 2011
- 稿件说明：
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王雪, 田莲花. Na4Ca3(AlO2)10∶Eu2+,Mn2+荧光粉的发光特性[J]. 发光学报, 2011,32(11): 1109-1114

WANG Xue, TIAN Lian-hua. Photoluminescence Characteristics of Na4Ca3(AlO2)10∶Eu2+,Mn2+[J]. Chinese Journal of Luminescence, 2011,32(11): 1109-1114
王雪, 田莲花. Na4Ca3(AlO2)10∶Eu2+,Mn2+荧光粉的发光特性[J]. 发光学报, 2011,32(11): 1109-1114 DOI：

WANG Xue, TIAN Lian-hua. Photoluminescence Characteristics of Na4Ca3(AlO2)10∶Eu2+,Mn2+[J]. Chinese Journal of Luminescence, 2011,32(11): 1109-1114 DOI：

摘要

采用高温固相法

制得一种新型荧光粉Na

(AlO

)

∶Eu

。样品的结构和发光性质分别由X射线衍射谱和荧光光谱来表征。在Na

(AlO

)

∶Eu

的激发光谱中出现了Eu

的f-d跃迁吸收带;在发射光谱中

出现蓝光发射

峰值位于441 nm。当在Na

(AlO

)

∶Eu

中掺杂Mn

时

发生了Eu

的能量传递

在542 nm处出现了Mn

的发射峰。在Na

(AlO

)

∶Eu

中

随着Mn

浓度的增加

粒子的发射强度减弱

而Mn

粒子的发射强度增强

且Eu

离子发射的衰减时间缩短

同时色度由蓝光移向白光。

Abstract

A novel phosphor Na

(AlO

)

∶Eu

was prepared by solid state reaction method in a thermal-carbon reducing atmosphere. The photoluminescence(PL) properties were investigated in this paper. The excitation spectrum of Na

(AlO

)

∶Eu

showed two absorption bands centered at 262 nm and 320 nm respectively. The photoluminescence spectrum of Na

(AlO

)

∶Eu

exhibited a single emission peak centered at 441 nm

which could be attributed to 5d-4f transition of Eu

. The excitation spectrum of Na

-(AlO

)

∶Mn

showed absorption peak at about 440 nm monitoring at 542 nm

which shows spectral overlap between emission spectrum of Na

(AlO

)

∶Eu

. Co-doped Mn

with Eu

the photoluminescence spectra of Na

(AlO

)

∶Eu

were observed two peaks centered at 441 nm and 542 nm correspon-ding to the 5d-4f transition of Eu

and the d-d transition of Mn

respectively. With increasing the concentration of Mn

the emission intensity of 5d-4f transition of Eu

at 441 nm was significantly decreased

whereas the d-d transition of Mn

at 542 nm was found to increase. The decay lifetime for Eu

was found to decrease with increasing Mn

dopant content

which was strong evidence for the energy transfer from Eu

to Mn

. We were also interested in investigating the energy transfer efficiency

of Eu

. With increasing Mn

dopant content

the energy transfer efficiency

was found to increase gradually. According to the Dexter's energy transfer formula of multipolar interaction

it was demonstrated that the energy transfer from Eu

to Mn

was due to the electric quadripole-quadripole interaction of the resonance transfer. According to the CIE chromaticity coordinates of Na

(AlO

)

∶Eu

it was clearly observed that the CIE chromaticity coordinates with the increase of Mn content shifted from blue region to white region.

关键词

Keywords

references

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