Preparation of Zn2GeO4: Mn2+ Green Phosphors and Investigation of Afterglow Characteristics

ZHAO Shu-ting; LI Wen-qi; MU Bo-shi; LI Zhi-chao; LI Cheng-ren

doi:10.3788/fgxb20194002.0189

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Preparation of Zn₂GeO₄: Mn²⁺ Green Phosphors and Investigation of Afterglow Characteristics

Synthesis and Properties of Materials | 更新时间：2020-08-12

- Preparation of Zn₂GeO₄: Mn²⁺ Green Phosphors and Investigation of Afterglow Characteristics
- Chinese Journal of Luminescence Vol. 40, Issue 2, Pages: 189-195(2019)
- 作者机构：
  
  辽宁师范大学物理与电子技术学院, 辽宁大连 116029
- 作者简介：
- 基金信息：
  
  Supported by National Natural Science Foundation of China(11004092);Foundation of Science and Technology Department of Liaoning Province(201602455);Education Department of Liaoning Province(L201683665)
- DOI：10.3788/fgxb20194002.0189
  CLC： O432.1+2
- Received：17 April 2018，
  
  Revised：02 August 2018，
  
  Published Online：20 August 2018，
  
  Published：05 February 2019
- 稿件说明：
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赵淑婷, 李文琪, 牟博石等. Zn2GeO4:Mn2+绿色磷光粉的制备和长余辉性能[J]. 发光学报, 2019,40(2): 189-195

ZHAO Shu-ting, LI Wen-qi, MU Bo-shi etc. Preparation of Zn2GeO4: Mn2+ Green Phosphors and Investigation of Afterglow Characteristics[J]. Chinese Journal of Luminescence, 2019,40(2): 189-195
赵淑婷, 李文琪, 牟博石等. Zn2GeO4:Mn2+绿色磷光粉的制备和长余辉性能[J]. 发光学报, 2019,40(2): 189-195 DOI： 10.3788/fgxb20194002.0189.

ZHAO Shu-ting, LI Wen-qi, MU Bo-shi etc. Preparation of Zn2GeO4: Mn2+ Green Phosphors and Investigation of Afterglow Characteristics[J]. Chinese Journal of Luminescence, 2019,40(2): 189-195 DOI： 10.3788/fgxb20194002.0189.

摘要

采用高温固相反应法合成了Zn

GeO

系列绿色长余辉磷光粉。XRD分析结果表明，掺锰磷光粉的主要衍射峰位与锗酸锌晶体标准卡基本一致，但略有红移。SEM照片显示，相对于Zn

GeO

基质平均粒径而言，掺锰磷光粉的颗粒尺寸均增大。在325 nm紫外光激发下，Zn

GeO

:Mn

发射出强的530 nm绿光，优化掺锰离子浓度为0.5%。同时发现Zn

GeO

:0.2Mn

磷光粉暗场条件下的余辉时间超过180 min，详细讨论了Zn

GeO

:Mn

长余辉发光的内在机理。

Abstract

A series of Zn

GeO

green long afterglow phosphors have been synthesized by high temperature solid-state reaction method. XRD results show that the main diffraction peaks of phosphors doped Mn

ions are basically consistent with those in standard card of Zn

GeO

crystal

but there exists slightly red shift. SEM photos present the particle sizes of phosphors doped different Mn

ions are all enlarged compared to average grain size of Zn

GeO

host. The intense 530 nm green emissions from Zn

GeO

:Mn

phosphors can be gained under 325 nm ultraviolet excitation and optimal Mn

doping concentration is 0.5%. At the same time

it is found that the afterglow time of Zn

GeO

:0.2Mn

phosphor exceeds 180 min under the condition of dark environment

and the internal mechanism of long afterglow luminescence of Zn

GeO

:Mn

phosphor is discussed in detail.

关键词

Keywords

references

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