多色持续发光用于高灵敏度的光学温度传感器,人类运动检测器和多模式防伪材料
Lingbo Zhou1,2, Rujia Chen1,2, Xinying Li1,2
1School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun 130022, China.
ACS applied materials & interfaces
|April 16, 2025
概括
新的多式发光材料,包括合Bi3+,Eu3+和Er3+的CaYGaO4,具有多功能光学性能. 这些可以用于先进的防伪,温度传感和人类运动检测应用.
科学领域:
- 材料科学 材料科学 材料科学
- 固态化学 固态化学
- 发光的光度是非常的低.
背景情况:
- 多式发光材料对于非接触式温度传感器和防伪等应用至关重要,因为它们具有动态发光和快速光学响应.
- 现有的材料往往需要特定的兴奋剂策略来实现所需的多式联接光学功能.
研究的目的:
- 为了合成和描述基于CaYGaO4合Bi3+,Eu3+和Er3+的新型多式发光光体.
- 研究这些材料的下转换,上转换,长时间持久和机械发光特性.
- 探索它们在防伪,温度传感和人类运动检测方面的潜在应用.
主要方法:
- 使用高温固态合成方法制备了CaYGaO4:Bi3+,Eu3+/Er3+.
- 综合光发光谱学用于分析下降转换,上升转换和长时间持久发光.
- 研究了机械发光和取决于温度的发光;进行了密度函数理论 (DFT) 和电子定位函数 (ELF) 分析.
主要成果:
- 用Bi3+,Eu3+和Er3+合合成的CaYGaO4光体呈现多色发光,包括下转换,上转换,长时间持久和机械发光.
- 在CaY0.92GaO4:0.01Bi3+,0.07Eu3+中,温度传感的最大相对灵敏度为1.49%K-1.
- DFT的计算显示,离子兴奋剂减少了带间隙,并诱导了Jahn-Teller效应,促进载体释放和提高光学性能.
结论:
- 开发的CaYGaO4:Bi3+,Eu3+/Er3+体是有效的多式发光材料,具有潜在的静态动态防伪.
- 这些材料为开发先进的光学检测设备提供了新的途径,包括温度传感器和人类运动探测器.
- 这些多模式发光材料的稳定缺陷状态支持它们在信息存储和安全应用中的实用性.
相关概念视频
01:14Photoluminescence: Applications
341
Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...
341
01:37Super-resolution Fluorescence Microscopy
6.8K
Super-resolution fluorescence microscopy (SRFM) provides a better resolution than conventional fluorescence microscopy by reducing the point spread function (PSF). PSF is the light intensity distribution from a point that causes it to appear blurred. Due to PSF, each fluorescing point appears bigger than its actual size, and it is the PSF interference of nearby fluorophores that causes the blurred image. Various approaches to achieving higher resolution through SRFM have recently been...
6.8K