Exploring the synergy between hot-electron dynamics and active plasmonics: A perspective

IF 2.7 3区 物理与天体物理 Q2 PHYSICS, APPLIED Journal of Applied Physics Pub Date : 2024-09-13 DOI:10.1063/5.0216205
Anjan Goswami, Andrew S. Kim, Wenshan Cai
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Abstract

Physical processes involving hot electrons, including their generation, transport, injection, and relaxation, have been an extensive area of research. The most widely utilized method for actuating the creation of hot electrons involves the excitation of plasmonic modes followed by their non-radiative decay, channeling the energy into these energetic carriers. Since plasmonics has already evolved into a mature field of scientific exploration, active plasmonic devices serve as an ideal platform to study hot-electron physics. In this Perspective article, we will provide the reader with a comprehensive outline of the physics underlying hot-electron dynamics. Emphasis will be placed on the characteristic timescales involved with the lifecycle of hot electrons, the generation and decay mechanisms of surface plasmon-induced hot electrons, and the material platforms suitable for such a study. Then, we will move on to discuss different temperature models used to explain the evolution of hot electrons and the changes in the optical properties of the materials they are generated in or injected into. Finally, we will focus on some of the interesting optical phenomena occurring at ultrafast timescales mediated by hot-carrier dynamics. Such a discussion is expected to incorporate valuable insights into our understanding of the synergistic relationship between hot-electron dynamics and active plasmonics, thereby paving the way for novel applications involving optoelectronics and energy conversion.
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探索热电子动力学与有源等离子体之间的协同作用:透视
涉及热电子的物理过程,包括其产生、传输、注入和弛豫,一直是一个广泛的研究领域。最广泛使用的热电子产生驱动方法包括激发等离子体模式,然后进行非辐射衰减,将能量导入这些高能载流子。由于等离子体学已经发展成为一个成熟的科学探索领域,有源等离子体器件成为研究热电子物理的理想平台。在这篇 "视角 "文章中,我们将向读者全面概述热电子动力学的基本物理学原理。重点将放在热电子生命周期所涉及的特征时标、表面等离子体诱导热电子的产生和衰减机制,以及适合此类研究的材料平台。然后,我们将继续讨论用于解释热电子演化及其在材料中产生或注入材料的光学特性变化的不同温度模型。最后,我们将重点讨论热载流子动力学在超快时间尺度下发生的一些有趣的光学现象。这样的讨论有望为我们理解热电子动力学与有源等离子体之间的协同关系提供有价值的见解,从而为涉及光电子学和能量转换的新型应用铺平道路。
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来源期刊
Journal of Applied Physics
Journal of Applied Physics 物理-物理:应用
CiteScore
5.40
自引率
9.40%
发文量
1534
审稿时长
2.3 months
期刊介绍: The Journal of Applied Physics (JAP) is an influential international journal publishing significant new experimental and theoretical results of applied physics research. Topics covered in JAP are diverse and reflect the most current applied physics research, including: Dielectrics, ferroelectrics, and multiferroics- Electrical discharges, plasmas, and plasma-surface interactions- Emerging, interdisciplinary, and other fields of applied physics- Magnetism, spintronics, and superconductivity- Organic-Inorganic systems, including organic electronics- Photonics, plasmonics, photovoltaics, lasers, optical materials, and phenomena- Physics of devices and sensors- Physics of materials, including electrical, thermal, mechanical and other properties- Physics of matter under extreme conditions- Physics of nanoscale and low-dimensional systems, including atomic and quantum phenomena- Physics of semiconductors- Soft matter, fluids, and biophysics- Thin films, interfaces, and surfaces
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