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近紫外激发单基质白光荧光粉NaLaMgWO6：Dy3+/Bi3+的制备及能量传递
Preparation and Energy Transfer Mechanism of Single-host White-light-emitting NaLaMgWO6:Dy3+/Bi3+ Phosphor
- 发光学报 2020年41卷第5期 页码：519-528
- 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：
[ "王明华(1995-), 男, 山东东营人, 硕士研究生, 2018年于泰山学院获得学士学位, 主要从事稀土发光材料方面的研究。E-mail:952156184@qq.com" ]
[ "廖金生(1973-), 男, 江西宁都人, 博士, 教授, 硕士研究生导师, 2006年于中国科学院福建物质结构研究所获得博士学位, 主要从事稀土发光材料方面的研究。E-mail:jsliao1209@126.com" ]
- 基金信息：国家自然科学基金(51862012);江西省科技厅5511重大研发专项(20165ABC28010)
DOI：10.3788/fgxb20204105.0519
中图分类号： TQ174收稿日期：2020-03-09，
录用日期：2020-3-26，
纸质出版日期：2020-05
- 稿件说明：
移动端阅览
王明华, 廖金生, 孔莉芸, 等. 近紫外激发单基质白光荧光粉NaLaMgWO6：Dy3+/Bi3+的制备及能量传递[J]. 发光学报, 2020,41(5):519-528.
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, 2020, 41(5): 519-528.
王明华, 廖金生, 孔莉芸, 等. 近紫外激发单基质白光荧光粉NaLaMgWO6：Dy3+/Bi3+的制备及能量传递[J]. 发光学报, 2020,41(5):519-528. DOI： 10.3788/fgxb20204105.0519.
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, 2020, 41(5): 519-528. 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
1-
x-y
MgWO
6
：
x
Dy
3+
/
y
Bi
3+
（
x
=0.01，0.02，0.04，0.06；
y
=0.01，0.02，0.04，0.06）。通过对Dy
3+
/Bi
3+
双掺杂浓度进行优化，Bi
3+
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
6
：
x
Dy
3+
/0.02Bi
3+
样品的荧光衰减曲线的分析可知，Dy
3+
离子浓度从1%增加到6%，Bi
3+
离子的荧光寿命逐渐减少，从而有力地证明了NaLaMgWO
6
：Bi
3+
/Dy
3+
荧光粉中存在Bi
3+
→Dy
3+
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
3+
→Dy
3+
能量传递过程为偶极-偶极的相互作用，最优Bi
3+
/Dy
3+
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
3+
离子掺杂浓度，NaLaMgWO
6
：Bi
3+
/Dy
3+
荧光粉可以实现白光发射。研究证明NaLaMgWO
6
：Bi
3+
/Dy
3+
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
1-
x-y
MgWO
6
:
x
Dy
3+
/
y
Bi
3+
(
x
=0.01
0.02
0.04
0.06;
y
=0.01
0.02
0.04
0.06) were prepared by high temperature solid state method. By the optimization of Dy
3+
/Bi
3+
double codoping concentration
the doping of Bi
3+
ions can not only effectively enhance the luminescence intensity of phosphors
but also achieve the tune of luminescence color. The fluorescence lifetime of Bi
3+
for NaLaMgWO
6
:
x
Dy
3+
/0.02 Bi
3+
samples gradually decreased with the increased concentration of Dy
3+
ions (1%-6%)
which proves strongly the presence of energy transfer process from Bi
3+
ions to Dy
3+
ions in NaLaMgWO
6
:Bi
3+
/Dy
3+
phosphors. According to the calculation of the electric multipole interaction formula
we can know that the energy transfer process of Bi
3+
→Dy
3+
is a dipole-dipole interaction and the energy transfer efficiency of the optimal Bi
3+
/Dy
3+
doped samples was calculated to be 42.67%. Under the effective excitation of the UV-light (ultraviolet light)
NaLaMgWO
6
:Bi
3+
/Dy
3+
phosphor can realize the emission of white light by changing the amount of Dy
3+
ions. The research proves that NaLaMgWO
6
:Bi
3+
/Dy
3+
phosphor is a kind of white light emitting material with potential application prospects.
关键词
Keywords
references
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