激光与光电子学进展, 2017, 54 (3): 030002, 网络出版: 2017-03-08
表面等离激元热电子超快动力学研究进展 下载: 2469次
Research Progress in Ultrafast Dynamics of Plasmonic Hot Electrons
表面光学 表面等离激元 热电子 异质结 抽运-探测技术 optics at surfaces surface plasmons hot electrons heterostructure pump-probe technique
摘要
表面等离激元因具有能突破光学衍射极限、表面局域性和近场增强等奇特的光学性质,被广泛应用于光伏、光催化和光电探测等研究领域。将具有高效光捕获特性的表面等离激元与传统半导体器件相结合,可以极大地提高传统半导体器件的效率,具有重要的应用价值。由局域表面等离激元弛豫产生的热电子是将太阳能转化为电能或化学能的关键,因此从微观上研究表面等离激元热电子的产生及弛豫过程对于设计高效率表面等离激元纳米光电器件具有重要意义。综述了表面等离激元热电子的激发及其在金属-半导体材料界面处的超快动力学过程的研究进展,分析了目前存在的主要问题并对其未来的发展前景进行了展望。
Abstract
Surface plasmons have novel optical properties, such as breaking light diffraction limit, surface localization, and optical near field enhancement, so they have been widely applied in the research area of photovoltaics, photocatalysis and photodetectors. Surface plasmons have excellent light harvesting capability, which can enhance the efficiency of conventional semiconductor devices by integrating with the conventional semiconductor devices. The hot electrons generated from the decay of localized surface plasmons is the core element in converting the incident light to the electrical or chemical energy. Therefore, the study of plasmonic hot electrons generation and relaxation process in microcosm is essential for the design of high-efficiency plasmonic nanophotonic devices. This article reviews the relaxation process of surface plasmons and recent progress in the ultrafast dynamics of plasmonic hot electrons in metal-semiconductor interface, discusses the remained issues and prospects future application of plasmonic hot electrons.
单杭永, 祖帅, 方哲宇. 表面等离激元热电子超快动力学研究进展[J]. 激光与光电子学进展, 2017, 54(3): 030002. Shan Hangyong, Zu Shuai, Fang Zheyu. Research Progress in Ultrafast Dynamics of Plasmonic Hot Electrons[J]. Laser & Optoelectronics Progress, 2017, 54(3): 030002.