一维有机胺矿的压力诱导排放 (PIE)
Yue Shi1, Zhiwei Ma1, Dianlong Zhao1
1State Key Laboratory of Superhard Materials, College of Physics , Jilin University , Changchun 130012 , P. R. China.
Journal of the American Chemical Society
|April 11, 2019
概括
有机锡胺矿由于结构变化而表现出压力诱导排放 (PIE). 这种与扭曲的八面体和自我捕获的激子相关的现象在传感器和数据存储中具有潜在的应用.
科学领域:
- 材料科学
- 固态物理
- 化学学
背景情况:
- 低维化矿易受结构扭曲和量子封闭效应的影响.
- 有机锡胺矿 (C4N2H14SnBr4) 具有独特的单维结构,具有核心外量子线的特征.
研究的目的:
- 研究C4N2H14SnBr4中的压力诱导排放现象.
- 了解这些材料中PIE的潜在机制.
主要方法:
- 使用钻石的高压实验.
- 在现场测量包括光发光,吸收和角散射X射线衍射.
- 基本原则的计算.
主要成果:
- 在C4N2H14SnBr4中实现了引人注目的压力诱导排放 (PIE).
- 观察到结构阶段过渡导致[SnBr6]4-八面体图案的显著扭曲.
- 证实了结构扭曲,自我捕获激子 (STEs) 和增强的辐射重组之间的联系.
结论:
- 在C4N2H14SnBr4中的PIE归因于扭曲的[SnBr6]4-八面体,促进了STE辐射重组.
- 增强的过渡双极矩和STE结合能量有助于显著的PIE.
- 这项研究突出了压力传感器,商标安全和信息存储的潜在应用.
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