大的二次响应和CeF的巨大的双折射 (2(SO4) 由高度偏振的多面体诱导
Chao Wu1, Tianhui Wu1, Xingxing Jiang2
1China-Australia Joint Research Center for Functional Molecular Materials, School of Chemical Science and Engineering, Tongji University, Shanghai 200092, China.
Journal of the American Chemical Society
|February 24, 2021
概括
研究人员开发了一种新型化硫酸盐, 这种材料为设计高性能光学材料提供了新的途径.
科学领域:
- 材料科学
- 固态化学
- 视觉学
背景情况:
- 非线性光学 (NLO) 材料对于光学应用至关重要.
- 同时优化第二生成 (SHG) 和双折是由于相互冲突的结构需求而具有挑战性的.
研究的目的:
- 合成和描述一种新的四价稀土金属硫酸盐.
- 研究其作为高性能NLO材料的潜力,增强SHG和双折.
主要方法:
- 晶体结构分析
- 理论计算
- 对NLO属性的实验性表征 (SHG和双断)
主要成果:
- 发现了首个四价稀土金属化硫酸盐CeF2 (SO4).
- 在酸NLO材料中,CeF2(SO4) 具有最强的SHG效应 (8x KH2PO4).
- 硫酸NLO材料的双折度最大,超过了氧化物的极限.
结论:
- 具有扭曲的[CeO4F4]多面体和[SO4]四面体的独特结构驱动了优越的NLO特性.
- CeF2 ((SO4) 为设计先进的NLO材料提出了新的策略.
- 这项工作为具有最佳光学功能的定制合成开辟了道路.
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