Preparation and Energy Transfer Mechanism of Single-host White-light-emitting NaLaMgWO6:Dy3+/Bi3+ Phosphor

Ming-hua WANG; Jin-sheng LIAO; Li-yun KONG; Jian-hua CHEN; Xin-yi WANG; Hao-kun YAN

doi:10.3788/fgxb20204105.0519

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Preparation and Energy Transfer Mechanism of Single-host White-light-emitting NaLaMgWO₆:Dy³⁺/Bi³⁺ Phosphor

Synthesis and Properties of Materials | 更新时间：2020-09-21

- Preparation and Energy Transfer Mechanism of Single-host White-light-emitting NaLaMgWO₆:Dy³⁺/Bi³⁺ Phosphor
- Chinese Journal of Luminescence Vol. 41, Issue 5, Pages: 519-528(2020)
- 作者机构：
  
  1.江西理工大学化学化工学院, 江西赣州 341000
  2.江西稀土功能材料科技有限公司, 江西赣州 341000
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China;Major Project of Natural Science Founda
- DOI：10.3788/fgxb20204105.0519
  CLC： TQ174
- Published：2020-5，
  
  Received：9 March 2020，
  
  Accepted：26 March 2020
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Ming-hua WANG, Jin-sheng LIAO, Li-yun KONG, et al. Preparation and Energy Transfer Mechanism of Single-host White-light-emitting NaLaMgWO₆:Dy³⁺/Bi³⁺ Phosphor. [J]. Chinese Journal of Luminescence 41(5):519-528(2020)
DOI：

Ming-hua WANG, Jin-sheng LIAO, Li-yun KONG, et al. Preparation and Energy Transfer Mechanism of Single-host White-light-emitting NaLaMgWO₆:Dy³⁺/Bi³⁺ Phosphor. [J]. Chinese Journal of Luminescence 41(5):519-528(2020) DOI： 10.3788/fgxb20204105.0519.

摘要

采用高温固相法制备了一系列单基质荧光粉NaLa

x-y

MgWO

：

（

=0.01，0.02，0.04，0.06；

=0.01，0.02，0.04，0.06）。通过对Dy

/Bi

双掺杂浓度进行优化，Bi

离子的掺杂不仅可以有效增强荧光粉的发光强度，还实现了发光颜色的可调。通过对系列NaLaMgWO

：

/0.02Bi

样品的荧光衰减曲线的分析可知，Dy

离子浓度从1%增加到6%，Bi

离子的荧光寿命逐渐减少，从而有力地证明了NaLaMgWO

：Bi

/Dy

荧光粉中存在Bi

→Dy

的能量传递过程。另外，通过电多极相互作用公式计算可知，Bi

→Dy

能量传递过程为偶极-偶极的相互作用，最优Bi

/Dy

掺杂样品的能量传递效率达到42.67%。在紫外光的有效激发下，通过改变Dy

离子掺杂浓度，NaLaMgWO

：Bi

/Dy

荧光粉可以实现白光发射。研究证明NaLaMgWO

：Bi

/Dy

荧光粉是一种具有潜在应用前景的白光发光材料。

Abstract

In this paper

a series of single-host phosphors NaLa

x-y

MgWO

(

=0.01

0.02

0.04

0.06;

=0.01

0.02

0.04

0.06) were prepared by high temperature solid state method. By the optimization of Dy

/Bi

double codoping concentration

the doping of Bi

ions can not only effectively enhance the luminescence intensity of phosphors

but also achieve the tune of luminescence color. The fluorescence lifetime of Bi

for NaLaMgWO

/0.02 Bi

samples gradually decreased with the increased concentration of Dy

ions (1%-6%)

which proves strongly the presence of energy transfer process from Bi

ions to Dy

ions in NaLaMgWO

:Bi

/Dy

phosphors. According to the calculation of the electric multipole interaction formula

we can know that the energy transfer process of Bi

→Dy

is a dipole-dipole interaction and the energy transfer efficiency of the optimal Bi

/Dy

doped samples was calculated to be 42.67%. Under the effective excitation of the UV-light (ultraviolet light)

NaLaMgWO

:Bi

/Dy

phosphor can realize the emission of white light by changing the amount of Dy

ions. The research proves that NaLaMgWO

:Bi

/Dy

phosphor is a kind of white light emitting material with potential application prospects.

关键词

铋/镝离子共掺杂高温固相能量传递NaLaMgWO6

Keywords

bismuth/dysprosium ion co-dopinghigh temperature solid stateenergy transferNaLaMgWO6

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