通过界面能量转移对光色上升转换的时空空间控制
Long Yan1, Jinshu Huang1, Zhengce An1
1State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, and Guangdong Engineering Technology Research Center of Special Optical Fiber Materials and Devices, South China University of Technology, Guangzhou, 510641, China.
Nature communications
|March 1, 2024
概括
研究人员实现了对化基材料排放的动态控制. 他们开发了一种使用界面能量转移在 (Er3+) 中进行可切换颜色的升级转换的方法,使可调节的光子应用成为可能.
科学领域:
- 材料科学 材料科学 材料科学
- 光子学 是一个光子学.
- 纳米技术 纳米技术
背景情况:
- 基于兰化物的材料对于具有可调节的发射颜色的多光子向上转换至关重要.
- 从单个发射器控制可切换颜色的排放的光色上转换仍然是一个重大挑战.
研究的目的:
- 开发一个概念模型,用于空间时间控制Erbium (Er3+) 中的上转换动态和光色进化.
- 通过界面能量转移 (IET) 在Er3+中实现红/绿色可切换的上转换.
主要方法:
- 采用了核心纳米结构设计,并使用了Ytterbium (Yb) 亚晶格敏感化中间层.
- 采用了纳米级空间操纵Er和Yb亚网格之间的界面相互作用.
- 应用时间调制技术,包括非平稳状态激发和时间间隔.
主要成果:
- 通过Yb子网格敏感化中间层提高了上转换效率,超过了常规Yb3+兴奋剂.
- 证明了对Er3+的上转换动态和光色演变的时空控制.
- 通过时间调制成功实现了红/绿色可切换的上转换.
结论:
- 开发的模型可以实现多功能设计和发光材料中排放颜色的动态管理.
- 这项研究为前沿光子应用 (如光学防伪和速度监控) 开辟了新的途径.
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