Influence of Bi3+ or Sm3+ Doping on Structure and Luminescence Properties of NaGd(WO4)2:Eu3+ Phosphors

ZHAI Yong-qing; ZHAO Xin; YANG Shuai; SUN Qing-lin; DENG De-rui; HU Zheng-lei; DING Shi-we

doi:10.3788/fgxb20173808.0987

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Influence of Bi³⁺ or Sm³⁺ Doping on Structure and Luminescence Properties of NaGd(WO₄)₂:Eu³⁺ Phosphors

更新时间：2020-08-12

- Influence of Bi³⁺ or Sm³⁺ Doping on Structure and Luminescence Properties of NaGd(WO₄)₂:Eu³⁺ Phosphors
- Chinese Journal of Luminescence Vol. 38, Issue 8, Pages: 987-994(2017)
- 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：
  
  Supported by National Natural Science Foundation of China(21301046);Innovation and
- DOI：10.3788/fgxb20173808.0987
  CLC： O482.31
- Received：13 January 2017，
  
  Revised：26 February 2017，
  
  Published：05 August 2017
- 稿件说明：
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翟永清, 赵鑫, 杨帅等. Bi3+或Sm3+掺杂对NaGd(WO4)2:Eu3+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 Bi3+ or Sm3+ Doping on Structure and Luminescence Properties of NaGd(WO4)2:Eu3+ Phosphors[J]. Chinese Journal of Luminescence, 2017,38(8): 987-994
翟永清, 赵鑫, 杨帅等. Bi3+或Sm3+掺杂对NaGd(WO4)2:Eu3+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 Bi3+ or Sm3+ Doping on Structure and Luminescence Properties of NaGd(WO4)2:Eu3+ 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-

（WO

）

：0.05Eu

，

（

=0，0.02，0.04，0.06，0.08）和NaGd

0.95-

（WO

）

：0.05Eu

，

（

=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

）

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

或Sm

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

的

电偶极跃迁。掺杂适量的Bi

或Sm

可有效提高NaGd

0.95

（WO

）

：0.05Eu

荧光粉的发光强度和红光的色纯度，其中Sm

的引入对其影响更为明显。

Abstract

A series of red phosphors NaGd

0.95-

(WO

)

:0.05Eu

(

0.02

0.04

0.06

0.08)and NaGd

0.95-

(WO

)

:0.05Eu

(

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

)

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

or Sm

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

transition of Eu

. In addition

doping with an appropriate amount of Bi

or Sm

can improve the luminescence intensity and red-light purity of NaGd

0.95

(WO

)

:0.05Eu

phosphors

especially for Sm

关键词

Keywords

references

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