期刊
APPLIED SURFACE SCIENCE
卷 495, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.apsusc.2019.143575
关键词
Au nanoparticles; Plasmon enhancement; Metallic oxides; Thin-film interference; Hybrid films/coatings
类别
资金
- National Natural Science Foundation of China [51273096, 51473082, 51878361]
- China Postdoctoral Science Foundation [2018M640613]
- Program of Introducing Talents of Discipline to Universities (111 plan)
- National One-Thousand Foreign Expert Program [WQ20123700111]
- State Key Project of International Cooperation Research [2016YFE0110800]
- 1st Level Discipline Program of Shandong Province of China
- Qingdao Source Innovation Project [182219jch]
Hybrid metal-oxide (MO)/metal nanostructures (MNSs) have been appealing in widespread optoelectronic devices due to their strong and tunable plasmonic activity encompassing selective scattering and absorption of wavelength depending upon the surface morphology and surrounding dielectric environment. In this paper, the various MO/Au NSs hybrid thin-films are fabricated via the solid-state-dewetting growth of Au NSs and sol-gel deposition of MO top-layers including ZrOx, CeOx, YOx, and AlOx. Over 450% enhancements in maximum absorption are observed along with the peak redshift of 168 nm for the series of MO/Au NS films. The overall plasmonic properties undergo three regimes by the systematical control of film morphology: (I) Rapid enhancement, (II) Slow enhancement and (III) Decay. The optical evolution is correspondingly investigated with the assistant of finite-different time-domain (FDTD) calculation. This work may give an aid to the photo-electronic applications, such as photovoltaics, sensing and surface enhanced Raman scattering, based on hybrid MNSs especially on control of their plasmonic properties.
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