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在WS₂的原子相模式半导体单层中出现的光学共振

John M Woods¹, Saroj B Chand¹, Enrique Mejia¹

¹Photonics Initiative, Advanced Science Research Center, City University of New York, New York, New York 10031, United States.

ACS photonics

|September 23, 2024

概括

研究人员精确控制了2D半导体中的光物质相互作用. 原子操纵创造了新的光学共振,使先进的光子学和量子技术能够更强的吸收和发射光.

科学领域:

光子学和量子技术的使用.
材料科学材料科学材料科学
凝聚物质物理学凝聚物质物理学

背景情况:

对光物质相互作用的原子尺度控制对于先进的光子学和量子技术至关重要.
二维 (2D) 半导体由于其薄度和光物理学,为光处理提供了独特的特性.
在原子层面实现对光学属性的精确控制仍然是一个重大挑战.

研究的目的:

通过原子规模的结构工程来演示2D半导体中的新型光学共振的产生.
研究多态结构对二维材料光物理性质的影响.
探索原子操纵的潜力,创造新的光采集和基于激子的光子装置.

主要方法:

在工程 2D 半导体异构结构中的电子带结构的理论预测.
在二维半导体矩阵内实验性制造耐用的多态结构.
光学共振的表征,包括吸收,发射偏振和辐射寿命.

主要成果:

在1H矩阵内证明了1T阶段的原子大小斑块的形成.
观察到来自这些多态结构的独特电子带.
证实了强大的光学共振的出现,具有强烈的吸收和循环极化发射.
对生成的光学共振测量了显著长的辐射寿命.

结论:

对二维半导体的原子操纵使其能够创建超出内在刺激子之外的额外光学共振.
多态结构为设计2D材料中的新型光电子特性提供了一条途径.
这种方法为开发高效的采光装置和基于激子的先进光子学开辟了新的途径.

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