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Bi3+或Sm3+掺杂对NaGd(WO4)2:Eu3+荧光粉结构和发光性质的影响
Influence of Bi3+ or Sm3+ Doping on Structure and Luminescence Properties of NaGd(WO4)2:Eu3+ Phosphors
- 发光学报 2017年38卷第8期 页码：987-994
- 作者机构：
河北大学 化学与环境科学学院,河北 保定,071002
- 作者简介：
- 基金信息：国家自然科学基金（21301046）();2016年河北省大学生创新创业训练计划（201610075077）();河北大学研究生创新项目（X201718）资助()
DOI：10.3788/fgxb20173808.0987
中图分类号： O482.31纸质出版日期：2017-8-5，
收稿日期：2017-1-13，
修回日期：2017-2-26，
扫 描 看 全 文
翟永清, 赵鑫, 杨帅等. Bi<sup>3+</sup>或Sm<sup>3+</sup>掺杂对NaGd(WO<sub>4</sub>)<sub>2</sub>:Eu<sup>3+</sup>荧光粉结构和发光性质的影响[J]. 发光学报, 2017,38(8): 987-994
ZHAI Yong-qing, ZHAO Xin, YANG Shuai etc. Influence of Bi<sup>3+</sup> or Sm<sup>3+</sup> Doping on Structure and Luminescence Properties of NaGd(WO<sub>4</sub>)<sub>2</sub>:Eu<sup>3+</sup> Phosphors[J]. Chinese Journal of Luminescence, 2017,38(8): 987-994
翟永清, 赵鑫, 杨帅等. Bi<sup>3+</sup>或Sm<sup>3+</sup>掺杂对NaGd(WO<sub>4</sub>)<sub>2</sub>:Eu<sup>3+</sup>荧光粉结构和发光性质的影响[J]. 发光学报, 2017,38(8): 987-994 DOI： 10.3788/fgxb20173808.0987.
ZHAI Yong-qing, ZHAO Xin, YANG Shuai etc. Influence of Bi<sup>3+</sup> or Sm<sup>3+</sup> Doping on Structure and Luminescence Properties of NaGd(WO<sub>4</sub>)<sub>2</sub>:Eu<sup>3+</sup> Phosphors[J]. Chinese Journal of Luminescence, 2017,38(8): 987-994 DOI： 10.3788/fgxb20173808.0987.
摘要
采用水热法制备了白光LED用NaGd
0.95-
x
（WO
4
）
2
：0.05Eu
3+
，
x
Bi
3+
（
x
=0，0.02，0.04，0.06，0.08）和NaGd
0.95-
y
（WO
4
）
2
：0.05Eu
3+
，
y
Sm
3+
（
y
=0，0.01，0.02，0.03，0.04）系列红色荧光粉，通过X射线衍射仪、扫描电子显微镜及荧光分光光度计等表征手段分析了样品的物相结构、颗粒形貌以及发光性质。结果表明：少量离子掺杂对NaGd（WO
4
）
2
的晶体结构影响较小，样品均为四方晶系、白钨矿结构的纯相；颗粒形貌呈四方盘状，且粒度均匀，分散性良好，Bi
3+
或Sm
3+
的引入使颗粒尺寸由原来的4 m分别增加至5 m和6 m。该系列荧光粉均可被近紫外光（394 nm）有效激发，其最强发射峰位于614 nm处，归属于Eu
3+
的
5
D
0
7
F
2
电偶极跃迁。掺杂适量的Bi
3+
或Sm
3+
可有效提高NaGd
0.95
（WO
4
）
2
：0.05Eu
3+
荧光粉的发光强度和红光的色纯度，其中Sm
3+
的引入对其影响更为明显。
Abstract
A series of red phosphors NaGd
0.95-
x
(WO
4
)
2
:0.05Eu
3+
x
Bi
3+
(
x
=0
0.02
0.04
0.06
0.08)and NaGd
0.95-
y
(WO
4
)
2
:0.05Eu
3+
y
Sm
3+
(
y
=0
0.01
0.02
0.03
0.04)were synthesized
via
hydrothermal process. The structure
morphology and luminescent properties of the samples were characterized by X-ray diffraction
scanning electron microscope and fluorescence spectrophotometer
respectively. The results indicate that the crystal structure of NaGd(WO
4
)
2
is almost not changed by doping a small amount of ions
and all samples are tetragonal scheelite-type pure phase. The particles are square plate in shape
relatively uniform and well dispersive. With the introduction of Bi
3+
or Sm
3+
the particle size increases from the original 4 m to 5 m and 6 m
respectively. The series of phosphors can be effectively excited under near-UV (at 394 nm)
and the strongest emission peak is located at 614 nm which corresponds to the
5
D
0
7
F
2
transition of Eu
3+
. In addition
doping with an appropriate amount of Bi
3+
or Sm
3+
can improve the luminescence intensity and red-light purity of NaGd
0.95
(WO
4
)
2
:0.05Eu
3+
phosphors
especially for Sm
3+
.
关键词
NaGd(WO4)2红色荧光粉水热法Bi3+和Sm3+敏化发光
Keywords
NaGd(WO4)2red phosphorhydrothermal methodBi3+ and Sm3+sensitized luminescence
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