Emission enhancement in indium zinc oxide(IZO)/Ag/IZO sandwiched structure due to surface plasmon resonance of thin Ag film

Kiba, Takayuki; Yanome, Kazuki; Kawamura, Midori; Abe, Yoshio; Kim, Kyung Ho; Takayama, Junichi; Murayama, Akihiro

doi:10.1016/j.apsusc.2016.08.032

Cited by 12 publications

(2 citation statements)

References 18 publications

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“…These artificially structured materials are further realized as hyperbolic metamaterials (HMMs), which show hyperbolic dispersion in the k-space and exhibit various novel optical properties when one of the permittivity tensors becomes negative in certain spectral ranges. Such a hyperbolic dispersion can be practically applied in optical hyperlens based on emission enhancement , or surface plasmon amplification by stimulated emission of radiation (SPASER) . Among various optical multilayer structures, − the ITO/Au/ITO (IAI) trilayer is an interesting type with plasmonic tunability ranging from near-infrared to the visible range.…”

Section: Introductionmentioning

confidence: 99%

Plasmonic Mode Analysis on Asymmetric ITO/Au/ITO Hyperbolic Metamaterials Using Prism-Coupled Spectroscopic Ellipsometry

Lam

Chan

et al. 2023

ACS Appl. Opt. Mater.

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Various trilayers (ITO-Au-ITO) of a constant total thickness of 43 nm, with different bottom and top ITO film thicknesses, have been prepared by magnetron sputtering. The effects of the relative position of the inserted gold layer on the trilayers' plasmonic properties have been systemically investigated. To study their optical reflectance changes caused by the surface plasmon resonance, total internal reflection ellipsometry (TIRE) has been employed. Two reflectance minima, corresponding to the pseudo-Brewster (PB) and bulk plasmon polariton (BPP), are observed from the reflectance spectra. The impacts of the light incident angles on the behaviors of these modes have been monitored. The measured reflectivity spectra match well with the simulated reflectivity spectra based on the Fresnel formalism. For the ITO t /Au/ITO b = 5/3/35 sample, where the Au layer is positioned closest to the sampling liquid, the BPP mode becomes the sharpest (based on the amplitude and half-width) as compared to other samples, indicating that the closer the ITO t /Au interface is to the sampling liquid, the stronger the observable plasmonic resonance effect is. Furthermore, it is found that the dip position of this BPP mode is independent of the angle of incidence but is sensitive to the refractive index of the sampling liquid. Our results show that the dip position shifts to a shorter wavelength with increasing refractive index of the sampling liquid. This means that the trilayer can act as a refractive index sensor. By linear regression, the obtained sensing accuracy is up to 552 nm/RIU. This facilitates the potential application of this trilayer structure as a surface plasmon-enhanced refractive index sensor.

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Section: Introductionmentioning

confidence: 99%

Plasmonic Mode Analysis on Asymmetric ITO/Au/ITO Hyperbolic Metamaterials Using Prism-Coupled Spectroscopic Ellipsometry

Lam

Chan

et al. 2023

ACS Appl. Opt. Mater.

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“…The TCO/metal/TCO trilayer structure, a typical multilayer structure, has been widely studied in many fields such as electronics, plasmonic devices, and metamaterials . This multilayer structure preserves the optical properties of the TCO, and at the same time possesses improved electrical properties by the insertion of the ultrathin metal layer.…”

Section: Introductionmentioning

confidence: 99%

Effect of Thickness on the Optical and Electrical Properties of ITO/Au/ITO Sandwich Structures

Lam

Wong

et al. 2020

ACS Appl. Mater. Interfaces

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Tin-doped indium oxide (ITO)/Au/ITO sandwich structures with varying top and bottom ITO film thicknesses were deposited by magnetron sputtering. The effects of varying thickness of the two ITO films on the structural, electrical, and optical properties of the sandwich structures were investigated. X-ray diffraction spectra showed that by inserting an ultrathin Au film, the average grain size of the top ITO layer was significantly increased, but not for the bottom one. The optical properties of the sandwich structures were measured by transmittance measurement and spectroscopic ellipsometry. In the symmetric structure, where the top and the bottom ITO layers had the same thickness, we demonstrated that the crossover wavelength can be changed from the visible range (830 nm) to the near-infrared range (1490 nm) by increasing the top as well as bottom ITO thickness, corresponding to a plasmonic tuning ability of over 600 nm. The evaluation of this trilayer structure as a plasmonic device was asserted based on three quality factors. A comparison of the performance of this trilayer structure with conventional materials was also discussed.

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Spectroscopic and Photoluminescent Properties of Indium Zinc Oxide (IZO) and IZO/Ag/IZO Sandwiched Film

Yanome

Kiba

Kawamura

et al. 2017

Journal of Elec Materi

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Emission enhancement in indium zinc oxide(IZO)/Ag/IZO sandwiched structure due to surface plasmon resonance of thin Ag film

Cited by 12 publications

References 18 publications

Plasmonic Mode Analysis on Asymmetric ITO/Au/ITO Hyperbolic Metamaterials Using Prism-Coupled Spectroscopic Ellipsometry

Plasmonic Mode Analysis on Asymmetric ITO/Au/ITO Hyperbolic Metamaterials Using Prism-Coupled Spectroscopic Ellipsometry

Effect of Thickness on the Optical and Electrical Properties of ITO/Au/ITO Sandwich Structures

Spectroscopic and Photoluminescent Properties of Indium Zinc Oxide (IZO) and IZO/Ag/IZO Sandwiched Film

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