(Ln = Y,Gd,Ce 和 La) 具有三角形配置,表现出优异的紫外线非线性光学性能
Xue Bai1, Xin Wen1,2, Chensheng Lin3
1Tianjin Key Laboratory of Functional Crystal Materials, Institute of Functional Crystal, Tianjin University of Technology, Tianjin, 300384, China.
Small (Weinheim an der Bergstrasse, Germany)
|February 7, 2025
概括
研究人员合成了新的稀土形式晶体,Ln(HCOO) 3,使用 π-结合形式的功能构建单元. 这些材料表现出强烈的非线性光学效应和可调的结构-属性关系,用于先进的光学应用.
科学领域:
- 材料科学 材料科学 材料科学
- 晶体学 晶体学是指结晶学.
- 光学是什么?光学是什么?光学是什么?
背景情况:
- 开发先进的非线性光学 (NLO) 晶体对于光学应用至关重要.
- 识别合适的功能建筑单元 (FBU) 和优化晶体结构是NLO晶体设计的关键挑战.
研究的目的:
- 为了探索π-结合的[HCOO]-作为一种UV NLO-活性FBU.
- 为了合成和表征一系列同型无水稀土格式,Ln(HCOO) 3.
- 调查这些新NLO材料中的结构-属性关系.
主要方法:
- 稀土形式的合成 Ln(HCOO) 3 (Ln = Y,Gd,Ce,La). 稀土形式的合成 Ln(HCOO) 3 (Ln = Y,Gd,Ce,La).
- 结晶学表征以确认空间组R3m.
- 测量第二和生成 (SHG) 效应,频段间隙和双断.
主要成果:
- 一系列同型无水稀土格式,Ln(HCOO) 3成功合成.
- 这些晶体表现出强烈的第二和生成 (SHG) 效应 (2.41-3.89 × KDP),宽带间隙 (4.20-5.45 eV) 和合适的双断率 (0.064-0.081@1064 nm).
- 在Ln3+的离子半径和SHG效应之间发现了反向相关性,更小的半径产生更强的SHG.
结论:
- π-结合的[HCOO]-单元对于设计UV NLO活性晶体是有效的.
- 合成的Ln(HCOO) 3系列为NLO应用提供了一个有前途的平台.
- 已识别的结构-属性相关性为设计高性能NLO晶体提供了指导方针.
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