Sr2MgSi2O7:Eu2+,Eu3+发光性能研究及颜色调控

何玲; 温顺; 孙卫民; 董其铮; 徐仰涛; 杨小凤

doi:10.37188/CJL.20230214

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Sr₂MgSi₂O₇:Eu²⁺,Eu³⁺发光性能研究及颜色调控

更新时间：2023-10-31

- Sr₂MgSi₂O₇:Eu²⁺,Eu³⁺发光性能研究及颜色调控
  增强出版
- Study on the Luminescence Performance and Color Control of Sr₂MgSi₂O₇:Eu²⁺,Eu³⁺
- 发光学报 2023年页码：1-8
- 作者机构：
  
  1.兰州理工大学材料科学与工程学院，甘肃兰州　730050
  2.兰州理工大学有色金属先进加工与回收国家重点实验室，甘肃兰州　730050
  3.甘肃稀土新材料股份有限公司，甘肃白银　730922
- 作者简介：
  
  [ "何玲（1976—），女，甘肃天水人，博士研究生，教授，2007年在兰州大学获得博士学位，主要从事光电功能材料及稀土回收再利用的相关研究。E-mail： hlswm@163.com" ]
- 基金信息：
  
  甘肃省重点研发项目(20YF8WA063);中央领导地方科技发展资金项目(2023-0401--0076)
- DOI：10.37188/CJL.20230214
  中图分类号：
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何玲,温顺,孙卫民等.Sr₂MgSi₂O₇:Eu²⁺,Eu³⁺发光性能研究及颜色调控[J].发光学报,

HE Ling,WEN Shun,SUN Weimin,et al.Study on the Luminescence Performance and Color Control of Sr₂MgSi₂O₇:Eu²⁺,Eu³⁺[J].Chinese Journal of Luminescence,
何玲,温顺,孙卫民等.Sr₂MgSi₂O₇:Eu²⁺,Eu³⁺发光性能研究及颜色调控[J].发光学报, DOI：10.37188/CJL.20230214

HE Ling,WEN Shun,SUN Weimin,et al.Study on the Luminescence Performance and Color Control of Sr₂MgSi₂O₇:Eu²⁺,Eu³⁺[J].Chinese Journal of Luminescence, DOI：10.37188/CJL.20230214

摘要

采用静电纺丝法在不同气氛下制备了Sr,2,MgSi,2,O,7,∶Eu,2+,，Eu,3+,纤维，研究其晶体结构、形貌；将纤维与聚二甲基硅氧烷（PDMS）复合后获得Sr,2,MgSi,2,O,7,∶Eu,2+,，Eu,3+,-PDMS复合材料，研究其光致发光和应力发光性能。研究结果显示，在氮气、空气下XPS图谱同时出现Eu,2+,和Eu,3+,结合能特征峰；在360 nm和395 nm激发下复合材料的光致发光光谱中，不但有Eu,2+,位于469 nm处的蓝色宽带发射，还包含Eu,3+,位于615 nm的多个红色窄带发射。因为Eu,3+,在电荷补偿下还原成Eu,2+,并在刚性结构保护下不被氧化，证实Eu,3+,在Sr,2,MgSi,2,O,7,中的自还原现象。随着Eu,3+,的掺杂浓度增大，光致发光和应力发光强度都先增大后减小，Eu,2+,和Eu,3+,的发射分别在5 mol%和10 mol%时达到最强。应力发光强度与应力的增长是线性关系，Eu,2+,的发射增长量大于Eu,3+,。在实物照片和CIE坐标中观测到光致发光颜色从蓝色逐渐接近红色，应力发光颜色在应力增大时逐渐从粉红色变为紫粉色。该材料的研究将为发光调控提供参考，在应力传感和防伪等领域有着潜在的使用价值。

Abstract

Sr,2,MgSi,2,O,7,：Eu,2+,，Eu,3+, fibers were prepared by Electrospinning under different atmospheres， and their crystal structure and morphology were studied； Composite materials of Sr,2,MgSi,2,O,7,：Eu,2+,，Eu,3+,-PDMS were obtained by combining fibers with polydimethylsiloxane （PDMS）， and their photoluminescence and mechanoluminescence properties were studied. The research results show that the XPS spectrum exhibits characteristic peaks of binding energy of Eu,2+, and Eu,3+, under nitrogen or air conditions； In the photoluminescence spectra of composite materials excited at 360 nm and 395 nm， there are not only blue broadband emissions of Eu,2+, at 469 nm， but also multiple red narrowband emissions of Eu,3+, at 615 nm. Because Eu,3+, is reduced to Eu,2+ ,under charge compensation and is not oxidized under the protection of a rigid structure， it confirms the self reduction phenomenon of Eu,3+, in Sr,2,MgSi,2,O,7,. As the doping concentration of Eu increases， the photoluminescence and mechanoluminescence intensities first increase and then decrease. The emission of Eu,2+, and Eu,3+, reaches their strongest at 5 mol% and 10 mol%， respectively. The intensity of mechanoluminescence is linearly related to the growth of stress， and the emission growth of Eu,2+, is greater than that of Eu,3+,. In physical photos and CIE coordinates， it was observed that the photoluminescence color gradually approached red from blue， and the mechanoluminescence color gradually changed from pink to purple pink as the stress increased. The study of this material will provide reference for luminescence regulation， and has potential usage value in fields such as stress sensing and anti-counterfeiting.

关键词

Sr2MgSi2O7：Eu2+，Eu3+纤维自还原应力发光发光调控

Keywords

Sr2MgSi2O7：Eu2+，Eu3+fibersSelf reductionMechanoluminescenceLuminescence regulation

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