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Title: Broadband absorption tailoring of SiO2/Cu/ITO arrays based on hybrid coupled resonance mode
Authors: Lian, Jiqing
Zhang, Dawei
Hong, Ruijin
Yan, Tingzhen
Lv, Taiguo
Zhang, Daohua
Keywords: ITO Thin Films
SiO2/Cu/ITO Arrays
Engineering::Electrical and electronic engineering
Issue Date: 2019
Source: Lian, J., Zhang, D., Hong, R., Yan, T., Lv, T., & Zhang, D. (2019). Broadband Absorption Tailoring of SiO2/Cu/ITO Arrays Based on Hybrid Coupled Resonance Mode. Nanomaterials, 9(6), 852-. doi:10.3390/nano9060852
Series/Report no.: Nanomaterials
Abstract: Sub-wavelength artificial photonic structures can be introduced to tailor and modulate the spectrum of materials, thus expanding the optical applications of these materials. On the basis of SiO2/Cu/ITO arrays, a hybrid coupled resonance (HCR) mechanism, including the epsilon-near-zero (ENZ) mode of ITO, local surface plasmon resonance (LSPR) mode and the microstructural gap resonance (GR) mode, was proposed and researched by systematically regulating the array period and layer thickness. The optical absorptions of the arrays were simulated under different conditions by the finite-difference time-domain (FDTD) method. ITO films were prepared and characterized to verify the existence of ENZ mode and Mie theory was used to describe the LSPR mode. The cross-sectional electric field distribution was analyzed while SiO2/Cu/ITO multilayers were also fabricated, of which absorption was measured and calculated by Macleod simulation to prove the existence of GR and LSPR mode. Finally, the broad-band tailoring of optical absorption peaks from 673 nm to 1873 nm with the intensities from 1.8 to 0.41 was realized, which expands the applications of ITO-based plasmonic metamaterials in the near infrared (NIR) region.
ISSN: 2079-4991
DOI: 10.3390/nano9060852
Rights: © 2019 by the Authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles

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