Sr2SiO4∶Eu2+,Dy3+的光存储特性

周琼; 孟宪国; 许英朝; 刘春辉; 吴盼盼; 王明明; 林翔宇

doi:10.37188/CJL.20210255

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Sr₂SiO₄∶Eu²⁺,Dy³⁺的光存储特性

材料合成及性能 | 更新时间：2021-11-23

- Sr₂SiO₄∶Eu²⁺,Dy³⁺的光存储特性
  增强出版
- Optical Storage Characteristics of Sr₂SiO₄∶Eu²⁺,Dy³⁺
- 发光学报 2021年42卷第11期页码：1774-1780
- 作者机构：
  
  1.厦门理工学院　光电与通信工程学院，福建　厦门　361024
  2.厦门理工学院　福建省光电技术与器件重点实验室，福建　厦门　361024
- 作者简介：
  
  [ "周琼(1995-)，男，安徽枞阳人，硕士研究生，2019年于安徽工程大学机电学院获得学士学位，主要从事稀土发光材料的研究。E-mail: 1907871427@qq.com" ]
  [ "许英朝(1980-)，男，山东莘县人，博士，教授，2009年于中国科学院长春光学精密机械与物理研究所获得博士学位，主要从事光电材料与器件、半导体照明技术等方面的研究。E-mail: ycxu@xmut.edu.cn" ]
- 基金信息：
  
  福建省自然科学基金面上项目(2019J01876);厦门市科技计划重大项目(3502ZCQ20191002);厦门理工学院科研攀登计划(XPDKT20009)
- DOI：10.37188/CJL.20210255
  中图分类号：
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周琼, 孟宪国, 许英朝, 等. Sr₂SiO₄∶Eu²⁺,Dy³⁺的光存储特性[J]. 发光学报, 2021,42(11):1774-1780.

Qiong ZHOU, Xian-guo MENG, Ying-chao XU, et al. Optical Storage Characteristics of Sr₂SiO₄∶Eu²⁺,Dy³⁺[J]. Chinese Journal of Luminescence, 2021,42(11):1774-1780.
周琼, 孟宪国, 许英朝, 等. Sr₂SiO₄∶Eu²⁺,Dy³⁺的光存储特性[J]. 发光学报, 2021,42(11):1774-1780. DOI： 10.37188/CJL.20210255.

Qiong ZHOU, Xian-guo MENG, Ying-chao XU, et al. Optical Storage Characteristics of Sr₂SiO₄∶Eu²⁺,Dy³⁺[J]. Chinese Journal of Luminescence, 2021,42(11):1774-1780. DOI： 10.37188/CJL.20210255.

摘要

通过还原气氛下的高温固相反应制备了Sr,1.994-,x,SiO,4,∶0.006Eu,2+,x,Dy,3+,(,x,=0.001~0.006)荧光粉。利用X射线衍射仪(XRD)和荧光分光光度计分析了Sr,1.994-,x,SiO,4,∶0.006Eu,2+,x,Dy,3+,荧光粉的晶体结构和发光性能，通过光致发光(PL)谱和光激励发光(PSL)谱表明所有的发光中心都来源于Eu,2+,离子。在320 nm和365 nm激发下，可以观察到以470 nm为中心的蓝光发射和530 nm为中心的绿光发射。热释光测试证明，Sr,1.994-,x,SiO,4,∶0.006Eu,2+,x,Dy,3+,材料的俘获陷阱深，室温下受热扰动影响小，在800 nm红外光激发下，被俘获的电子释放，在发光中心中与空穴复合发光。在254 nm紫外线照射0.5 h后，用980 nm红外激光器照射，可以观察到绿色的光激励发光，结果表明Sr,1.994-,x,SiO,4,∶0.006Eu,2+,x,Dy,3+,具有光存储特性。

Abstract

Sr,1.994-,x,SiO,4,∶0.006Eu,2+,x,Dy,3+,(,x,=0.001-0.006) phosphors were prepared by high-temperature solid-state reaction in a reducing atmosphere. The crystal structure and photoluminescence(PL) properties of Sr,1.994-,x,SiO,4,∶0.006Eu,2+,x,Dy,3+, phosphors were investigated with X-ray diffractomer(XRD) and spectrophotometer. The PL spectra and photostimulated luminescence(PSL) spectra show that all the luminescence centers are derived from Eu,2+, ions. Under the excitation of 320 nm and 365 nm, blue light emission centered at 470 nm and green light emission centered at 530 nm can be observed. The thermoluminescence test proved that the trap of Sr,1.994-,x,SiO,4,∶0.006Eu,2+,x,Dy,3+, material is deep, and it is less affected by thermal disturbance at room temperature. Under the excitation of 800 nm infrared light, the trapped electrons are released and interact with holes in the luminescent center. After irradiated by 254 nm UV for 0.5 h, and stimulated with a 980 nm infrared laser, the phosphors exhibit obvious green PSL. The results show that Sr,1.994-,x,-SiO,4,∶0.006Eu,2+,x,Dy,3+, has optical storage characteristics.

关键词

高温固相法Sr2SiO4光致发光光激励发光光存储

Keywords

high temperature solid-state reactionSr2SiO4photoluminescencephotostimulated luminescenceoptical storage

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