Synthesis and Photoluminescence Properties of NaLa0.7(MoO4)2-x(WO4)x:0.3Eu3+ Novel Red Phosphors

WU Dong-ni; CUI Rui-rui; GONG Xin-yong; DENG Chao-yong

doi:10.3788/fgxb20163703.0274

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Synthesis and Photoluminescence Properties of NaLa_0.7(MoO₄)_{2-x(WO₄)_x:0.3Eu³⁺ Novel Red Phosphors}

更新时间：2020-08-12

- Synthesis and Photoluminescence Properties of NaLa_0.7(MoO₄)_{2-x(WO₄)_x:0.3Eu³⁺ Novel Red Phosphors}
- Chinese Journal of Luminescence Vol. 37, Issue 3, Pages: 274-279(2016)
- 作者机构：
  
  1. 贵州大学大数据与信息工程学院, 贵州省电子功能复合材料特色重点实验室,贵州贵阳,550025
  2. 贵州师范大学物理与电子科学学院,贵州贵阳,550001
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20163703.0274
  CLC： O482.31
- Received：26 October 2015，
  
  Revised：17 December 2015，
  
  Published：05 March 2016
- 稿件说明：
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吴冬妮, 崔瑞瑞, 龚新勇等. 新型红色荧光粉NaLa0.7(MoO4)2-x(WO4)x:0.3Eu3+的制备及发光性质研究[J]. 发光学报, 2016,37(3): 274-279

WU Dong-ni, CUI Rui-rui, GONG Xin-yong etc. Synthesis and Photoluminescence Properties of NaLa0.7(MoO4)2-x(WO4)x:0.3Eu3+ Novel Red Phosphors[J]. Chinese Journal of Luminescence, 2016,37(3): 274-279
吴冬妮, 崔瑞瑞, 龚新勇等. 新型红色荧光粉NaLa0.7(MoO4)2-x(WO4)x:0.3Eu3+的制备及发光性质研究[J]. 发光学报, 2016,37(3): 274-279 DOI： 10.3788/fgxb20163703.0274.

WU Dong-ni, CUI Rui-rui, GONG Xin-yong etc. Synthesis and Photoluminescence Properties of NaLa0.7(MoO4)2-x(WO4)x:0.3Eu3+ Novel Red Phosphors[J]. Chinese Journal of Luminescence, 2016,37(3): 274-279 DOI： 10.3788/fgxb20163703.0274.

摘要

采用高温固相法合成具有余辉性能的发光材料NaLa

0.7

(MoO

)

(WO

)

:0.3Eu

(

0.5

1.5

2)。用X射线衍射(XRD)和荧光光谱对样品的晶体结构和发光特性进行表征。测试结果表明

在900 ℃下烧结8 h所合成的NaLa

0.7

(MoO

)

(WO

)

:0.3Eu

样品为纯相NaLa(MoO

)

样品可被近紫外光393 nm和蓝光462 nm有效激发

其发射主峰位于615 nm处

属于Eu

的

跃迁。NaLa

0.7

(MoO

)

(WO

)

:0.3Eu

的发光强度随着W

浓度的增加而增大

当W

掺杂量

=1时发光最强

而后随W

掺杂浓度的增加出现浓度猝灭现象。通过计算得到样品在393 nm和462 nm激发下的色坐标

当W

的掺杂量

=1时

样品的红光色纯度最好。

Abstract

NaLa

0.7

(MoO

)

(WO4)

:0.3Eu

afterglow luminescent materials were synthesized by solid state reaction. The crystal structure and luminescence properties of the samples were characterized by means of X-ray diffraction and photoluminescence spectra. The results show that NaLa

0.7

(MoO

)

(WO

)

:0.3Eu

phosphors can be excited efficiently by near-ultraviolet (393 nm) and blue light (462 nm)

and the main emission peak is located at 615 nm due to

transition of Eu

ions. X-ray diffraction pantterns (XRD) show that the phosphors calcinated at 900 ℃ for 8 h were pure NaLa(MoO

)

crystal phase. The luminescent intensity of NaLa

0.7

(MoO

)

(WO

)

:0.3Eu

increases with the increasing of W

content

and reaches the maximum when the doping content of W

(

) is 1. The phenomenon of concentration quenching occurs when W

doping concentration is excess. Moreover

the CIE chromaticity (

) of NaLa

0.7

-(MoO

)

(WO

)

:0.3Eu

excited by 393 nm and 462 nm lights were analyzed. When the doping concentration of W

(

)

is 1

the red chromaticity coordinate of the samples is closer to the Commission International de LEclairage (CIE) chromaticity coordinates.

关键词

Keywords

references

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