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腔增强磁二极子共振诱导了来自百纳米大小的球的热发光

Yi-Chuan Tseng¹, Sih-Wei Chang¹, Yang-Chun Lee¹

¹Department of Materials Science and Engineering, National Taiwan University, No.1, Sec. 4, Roosevelt Road, Taipei 10617, Taiwan.

Nanophotonics (Berlin, Germany)

|December 5, 2024

概括

我们展示了一种新的方法,用于在球中增强声辅助热发光 (PAHL),使用空腔增强磁二极体共振. 这种技术可以实现显著的光物质相互作用和可调节的辐射,用于光子学应用.

科学领域:

光学和光子学在光学和光子学.
材料科学材料科学材料科学
半导体物理半导体物理

背景情况:

在 (Si) 中的波辅助热发光 (PAHL) 通常受到弱光-物质相互作用的限制.
现有的方法通常依赖于等离子体效应或量子束,这并不总是可取或可行的.
从中开发高效和可调节的光发射对于集成光子学至关重要.

研究的目的:

为了证明没有等离子体或量子束的球的音频辅助热发光 (PAHL) 辐射.
为了实现强烈的光物质相互作用,并通过空腔增强磁二极子共振来增强PAHL.
探索排放峰值的可调性,用于全光学处理中的潜在应用.

主要方法:

使用薄膜腔 (80 nm SiO2 / Ag) 激发Si球 (直径> 100nm) 以诱导磁二极子共振.
利用薄膜腔和Si球体共振之间的共同增强用于场度.
通过实验测量PAHL增强和内部量子效率.
通过通过热氧化和蚀刻调整Si球体大小来调节排放峰值波长.

主要成果:

为Si球体与薄膜腔相结合,实现了10倍的场增强.
通过使用空腔增强磁二极子共振,在PAHL中表现出50倍的增强.
测量了可见光发射的内部量子效率约为2.4%.
通过控制Si球体大小,展示了排放峰值的精确可调性,可控性高于Si量子点.

结论:

腔增强磁二极子共振提供了一个强大的机制来促进PAHL在球.
证明的可调性和现场增强为开发基于的全光学处理器件提供了巨大的潜力.
这种方法克服了以前方法的局限性,为先进的光子学铺平了道路.

关键词:

在Si光子学中.磁双极共振是一种磁性共振.语音器辅助的光照发光.皮尔塞尔效应是什么意思薄膜腔体的使用方法

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