南方科技大学知识苑(SUSTech KC): Optoelectronic tuning of plasmon resonances via optically modulated hot electrons

题名	Optoelectronic tuning of plasmon resonances via optically modulated hot electrons
作者	Yao，Jiacheng 1; Wang，Cheng 1; Zhang，Chi 1; Ma，Song 1; Zhou，Li 1; Wang，Ti 1; Wang，Ququan2 ; Xu，Hongxing 1; Ding，Tao 1
通讯作者	Ding，Tao
发表日期	2024-05-01
DOI	10.1093/nsr/nwad280
发表期刊	National Science Review 影响因子和分区
ISSN	2095-5138
EISSN	2053-714X
卷号	11 期号:5
摘要	Fast optical modulation of nanoplasmonics is fundamental for on-chip integration of all-optical devices. Although various strategies have been proposed for dynamic modulation of surface plasmons, critical issues of device compatibility and extremely low efficiency in the visible spectrum hamper the application of optoplasmonic nanochips. Here we establish an optoplasmonic system based on Au@Cu2-xS hybrid core-shell nanoparticles. The optical excitation of hot electrons and their charge transfer to the semiconductor coating (Cu2-xS) lead to lowered electron density of Au, which results in the red shift of the localized surface plasmon resonance. The hot electrons can also transport through the Cu2-xS layer to the metal substrate, which increases the conductance of the nanogap. As such, the coupled gap plasmon blue-shifts with a magnitude of up to ∼15 nm, depending on the excitation power and the thickness of the coatings, which agrees with numerical simulations. All of this optoelectronic tuning process is highly reversible, controllable and fast with a modulated laser beam, which is highly compatible and sufficiently useful for on-chip integration of nanophotonic devices.
关键词	circuit model hot carriers NPoM optoplasmonics plasmon switching
相关链接	[Scopus记录]
收录类别	EI
语种	英语
学校署名	其他
Scopus记录号	2-s2.0-85189704417
来源库	Scopus
引用统计	被引频次[WOS]：2
成果类型	期刊论文
条目标识符	http://sustech.caswiz.com/handle/2SGJ60CL/741160
专题	理学院_物理系
作者单位	1.Key Laboratory of Artificial Micro,Nano Structure of Ministry of Education,School of Physics and Technology,Wuhan University,Wuhan,430072,China 2.Department of Physics,Southern University of Science and Technology,Shenzhen,518055,China
推荐引用方式 GB/T 7714	Yao，Jiacheng,Wang，Cheng,Zhang，Chi,et al. Optoelectronic tuning of plasmon resonances via optically modulated hot electrons[J]. National Science Review,2024,11(5).
APA	Yao，Jiacheng.,Wang，Cheng.,Zhang，Chi.,Ma，Song.,Zhou，Li.,...&Ding，Tao.(2024).Optoelectronic tuning of plasmon resonances via optically modulated hot electrons.National Science Review,11(5).
MLA	Yao，Jiacheng,et al."Optoelectronic tuning of plasmon resonances via optically modulated hot electrons".National Science Review 11.5(2024).