动态调节的极化中红外发光二极管来自带边维尔节点的极化奇点中的带边维尔节点
Junrong Zhang1,2, Fengyuan Xuan3, Jiexi Song3
1i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences, Suzhou, Jiangsu, China.
Nature communications
|December 12, 2025
概括
研究人员开发了可调节的偏光发射器,使用,一个韦尔半导体. 这些设备提供可调节的极化,为新型拓光电学铺平了道路.
科学领域:
- 凝聚物质物理学 凝聚物质物理学
- 材料科学 材料科学 材料科学
- 光电学是指光电子产品.
背景情况:
- 传统的半导体具有由选择规则决定的固定光极化.
- 由于带交叉的韦尔节点,韦尔半导体表现出独特的极化对比,使得载体动态敏感.
研究的目的:
- 为了证明中红外发光二极管 (LED) 的可调节的偏光辐射.
- 为了研究韦尔节点在传导带最小 (CBM) 在极化控制中的作用.
主要方法:
- 使用范德瓦尔斯,一个韦尔半导体,制造中红外LED.
- 在不同载体密度下的光极化状态的实验性表征.
- 第一个原则计算,以了解两极分化的起源.
主要成果:
- 在LED中实现了高极化调整性,线性极化度可从~100%到36%进行调整.
- 证明CBM定位的韦尔节点诱导极化奇点.
- 通过准费米水平转移和热载体重组,显示了极化动态调制.
结论:
- 带边维尔节点为可调节的偏振发射器提供了一个平台.
- 这项工作为具有动态极化控制的拓光电子学开辟了新的可能性.
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