通过在零维混合金属化物中混合有机酸刺激的对称性破坏产生第二次波生成
Jindong Cao1, Kunjie Liu1, Mingzhen Quan1
1The Beijing Municipal Key Laboratory of New Energy Materials and Technologies, School of Materials Sciences and Engineering, University of Science and Technology Beijing, Beijing 100083, China. jingzhao@ustb.edu.cn.
Dalton transactions (Cambridge, England : 2003)
|June 26, 2023
概括
这项研究引入了一种通过混合子来调整混合有机-无机金属化物 (HOIMHs) 的光学性能的新方法. 合成的HOIMH显示出显著的第二波生成,证明了它们在非线性光学应用中的潜力.
科学领域:
- 材料科学 材料科学 材料科学
- 固态化学 固态化学
- 光电学是指光电子产品.
背景情况:
- 混合有机-无机金属化物 (HOIMHs) 是具有不同光学性能的可调节材料.
- 非对称的晶体结构对于实现非线性光学 (NLO) 效果至关重要.
- 目前正在探索诱导HOIMH中不对称性的方法,以增强NLO属性.
研究的目的:
- 为了合成具有不对称结构的新型零维 HOIMH.
- 研究合成材料的第二波生成 (SHG) 特性.
- 探索这些材料在NLO应用中的潜力.
主要方法:
- 合成零维的 (C9N3H15) ((C9H13SO) MBr6 (M = Bi/Sb) 化合物. 这种化合物可以在
- 结晶学分析以确定空间组和结构对称性.
- 使用1064nm激光进行第二波生成 (SHG) 测量.
- 密度函数理论 (DFT) 计算用于电子带结构分析.
主要成果:
- 两种新的HOIMHs, (C9N3H15) ((C9H13SO) BiBr6和 (C9N3H15) ((C9H13SO) SbBr6,已经成功合成.
- 这两种化合物都在极地空间组P212121中结晶,证实了不对称的结构.
- 观察到显著的相位匹配的SHG,其强度分别是KH2PO4的1.8和1.7倍.
- DFT计算显示,基于Bi的化合物有2.95 eV和基于Sb的化合物有2.81 eV的直接带隙.
- (C9N3H15) ((C9H13SO) SbBr6由于ns2光而呈现出明亮黄色的辐射.
结论:
- 混合具有不同化学性质的离子是创建不对称HOIMH结构的有效策略.
- 合成的HOIMH显示出有前途的相匹配SHG,适合于NLO应用.
- 观察到的光学特性归因于材料的折叠对称性和电子结构.
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