Conductive Ag/Au Nanoparticle Films with Enhanced Second-Harmonic Generation Exceeding Percolating Limitation

Wu，Zhi Yong1; Dou，Zhen Long1; Chen，Li Jiong1; Zhou，Li1; Wang，Qu Quan1,2

2023-03-30

10.1021/acs.jpcc.3c00374

Journal of Physical Chemistry C   Impact Factor & Quartile

1932-7447

1932-7455

Nonlinear optical signals of metallic nanoparticle films usually reach the maximum at the percolation threshold with a semicontinuous nanostructure due to the enhancement of the percolating effect. Here, we deposited Ag nanoparticles on the percolating Au nanoparticle film to construct conductive Ag/Au bilayer films and comparatively explored second harmonic generation (SHG) of single-component (Au or Ag) and two-component Ag/Au nanoparticle films. Intriguingly, we observed a 680% SHG enhancement of the Ag/Au bilayer film compared to that of the percolating Au nanoparticle film, which is caused by a cooperative effect of surface plasmon resonances, interband transitions, and the percolation effect. These observations provide a strategy to design nonlinear photonic nanodevices with optimized nonlinear performance.

SCI

English

Others

National Key R&D Program of China[2020YFA0211300] ; National Natural Science Foundation of China["12174294","12074296","11874293"]

Chemistry ; Science & Technology - Other Topics ; Materials Science

Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary

WOS:000962094400001

AMER CHEMICAL SOC

2-s2.0-85150416519

Scopus

1.Key Laboratory of Artificial Micro- and Nano-structures of the Ministry of Education,Hubei Nuclear Solid Physics Key Laboratory,School of Physics and Technology,Wuhan University,Wuhan,430072,China
2.College of Science,Southern University of Science and Technology,Shenzhen,518055,China

Wu，Zhi Yong,Dou，Zhen Long,Chen，Li Jiong,et al. Conductive Ag/Au Nanoparticle Films with Enhanced Second-Harmonic Generation Exceeding Percolating Limitation[J]. Journal of Physical Chemistry C,2023,127(12):6054-6059.

Wu，Zhi Yong,Dou，Zhen Long,Chen，Li Jiong,Zhou，Li,&Wang，Qu Quan.(2023).Conductive Ag/Au Nanoparticle Films with Enhanced Second-Harmonic Generation Exceeding Percolating Limitation.Journal of Physical Chemistry C,127(12),6054-6059.

Wu，Zhi Yong,et al."Conductive Ag/Au Nanoparticle Films with Enhanced Second-Harmonic Generation Exceeding Percolating Limitation".Journal of Physical Chemistry C 127.12(2023):6054-6059.