结构变化对阳离子工程Re3+中的能量转移的影响:Y2O3通过低温合成方法
Maharram Jabrayilov1, Kelly E Cohen1, Cameron L Roman1
1Cain Department of Chemical Engineering, Louisiana State University, Baton Rouge, Louisiana 70803, United States.
The journal of physical chemistry. C, Nanomaterials and interfaces
|February 21, 2024
概括
氧化宿主 (Y2O2SO4,Y2O2S) 的阳离子工程是通过低温合成实现的. 这种方法通过控制晶体结构和剂混合化来定制光学特性,增强发光.
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:
- 阳离子工程是调整金属氧化物特性的一个关键策略.
- 稀土 (RE) 合材料对于光学应用至关重要.
- 控制晶体结构会影响材料性能.
研究的目的:
- 开发一种低温合成用于RE-doped的Y2O2SO4和Y2O2S.
- 为了研究结构转换和光学特性之间的相关性.
- 通过离子修饰和能量转移来优化发光.
主要方法:
- 低温回火 Y(OH) 3 中介物与元素硫.
- 控制的减少步骤.
- 用X射线衍射 (XRD) 和UV-IR光学光谱学进行结构和光学分析.
- 热重力测量分析 (TGA) 用于结构转型监测.
- 用Eu3+,Ce3+和Tb3+进行兴奋剂,以研究光学行为和能量转移.
主要成果:
- 在低温下成功合成了Y2O2SO4和Y2O2S.
- 由于晶体结构的演变 (立方Y2O3到三角形Y2O2S到单临Y2O2SO4),观察到Eu3+激发/排放峰值的系统变化.
- 通过离子组成证明了多邦 (Ce3+) 局部杂交的修饰.
- 在单临床Y2O2SO4宿主中通过能量转移显著增强Tb3+和Tb3+/Ce3+发光.
结论:
- 低温离子工程有效地调整了基于氧化的材料的晶体结构和光学特性.
- 单临床Y2O2SO4宿主表现出优越的发光性能,这是由于优化了能量传输途径.
- 这项工作为通过精确控制晶体化学而设计先进的发光材料提供了一条途径.
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