在室温下单核Yb/Sm共晶组件中的上转换发光
Guotao Sun1,2, Yao Xie2, Yuxin Wang2
1School of Materials Science and Engineering, Shanghai University, Shanghai, 200444, China.
Angewandte Chemie (International ed. in English)
|September 12, 2023
概括
研究人员开发了基于金属的上转换发光,使用在共同晶体组合中的离散 (Sm3+) 和 (Yb3+) 复合体. 在相当的Yb3+和Sm3+度下发生了最佳发光.
科学领域:
- 材料科学 材料科学 材料科学
- 无机化学 无机化学
- 摄影化学的使用
背景情况:
- 上转换发光,一种反斯托克斯过程,将高能光子转换为低能光子,对于基础研究和应用至关重要.
- 兰化物复合物具有独特的光物理性质,但在离散分子系统中实现高效的上转化仍然具有挑战性.
研究的目的:
- 开发和研究单独的单核伊特 (Yb3+) 和萨马 (Sm3+) 复合物的共晶组合中的上转换发光.
- 探索Yb3+和Sm3+的摩尔度对发光强度的影响.
- 阐明负责上转换的能量转移机制.
主要方法:
- 离散单核Yb3+和Sm3+复合物的合成和表征.
- 形成具有不同Yb3+:Sm3+摩尔比的共同晶体组合.
- 光发光光谱法用于测量在980nm激发下向上转换的排放.
- 单晶X射线衍射以确定晶体结构.
主要成果:
- 在激发980nm的Yb3+吸收带时,观察到Sm3+的特征可见排放.
- 当Yb3+和Sm3+的摩尔度相当时,达到最强的上转换发光.
- 通过结构和光谱分析确定和验证了合作敏感化升级转换和能量转移升级转换机制.
结论:
- 这项研究展示了Sm3+基上转换发光的第一个例子,在室温下作为共同晶体组件呈现的离散兰化物复合体中.
- 这些发现突出了共晶架构中离散的兰化物复合物的潜力,用于高效的上转换发光应用.
- 结果为设计具有量身定制的升级转换特性的新型分子材料提供了基础.
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