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Deposited ultra-thin titanium nitride nanorod array as a plasmonic near-perfect light absorber.

ABSTRACT: The transmittance, reflectance, and extinctance that correspond to the localized plasmonic resonance within TiN nanorods were investigated. The obliquely deposited TiN nanorod array shows polarization-independent admittance matching to air. Unlike noble metal nanorods, the near-field localized longitudinal and transverse plasmonic resonance of TiN nanorod arrays present polarization-dependent light extinction in the far field. The longitudinal plasmonic mode presents stronger extinction than transverse plasmonic mode. In order to have high efficient light absorption, an ultra-thin two-layered TiN nanorod array was fabricated with orthogonal deposition planes for upper layer and bottom layer to absorb different polarized light energy. The measured spectrum shows broadband and wide-angle light extinction.

SUBMITTER: Jen YJ

PROVIDER: S-EPMC7747740 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature

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Deposited ultra-thin titanium nitride nanorod array as a plasmonic near-perfect light absorber.

Jen Yi-Jun YJ Yang Kai-Bin KB Lin Po-Chun PC Chung Meng-Hsun MH

Scientific reports 20201217 1

The transmittance, reflectance, and extinctance that correspond to the localized plasmonic resonance within TiN nanorods were investigated. The obliquely deposited TiN nanorod array shows polarization-independent admittance matching to air. Unlike noble metal nanorods, the near-field localized longitudinal and transverse plasmonic resonance of TiN nanorod arrays present polarization-dependent light extinction in the far field. The longitudinal plasmonic mode presents stronger extinction than tra ...[more]

PMID: 33335242

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