ITO/Au/ITO multilayer thin films on transparent polycarbonate with enhanced EMI shielding properties

Erdogan, Nursev; Erden, Fuat; Astarlioglu, Aziz Taner; Özdemir, Mehtap; Özbay, Salih; Aygün, Gülnur; Özyüzer, L.

doi:10.1016/j.cap.2020.01.012

Cited by 47 publications

(25 citation statements)

References 36 publications

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“…To highlight the efficient EMI shielding properties of the AgNW@rGO networks, the SE T of previously studied transparent EMI shielding materials and the AgNW@rGO networks were summarized comprehensively as a function of their transmittance (see Figure f and Table S2). ,,,,− The SE T value of the AgNW@rGO networks was in the 35.5–57.6 dB range when the transmittance ranged from 57.3 to 91.1%. The AgNW@rGO networks outperformed most of the currently available transparent EMI shielding materials by far.…”

Section: Resultsmentioning

confidence: 96%

“…The SE T decreased by less than 10% after repeated stretching-and-releasing of the AgNW@rGO network at 40% strain for 1000 cycles (Figure 5b). Such a good stretchability of the AgNW@rGO networks was attributed to the reversible rearrangement of the entire network under tensile deformation 81 MXene−CNT composite film, 82 graphene−metal mesh, 83 AgNW−Cu composite film, 84 Ni/Ni−Ag meshes, 85,86 AgNW−Fe 3 O 4 network, 87 AgNW mesh, 88 Co-doped SnO 2 film, 89 and Ti 3 C 2 T x film. and the slippage of rGO, which can bridge between the fragmented AgNWs (Figure S5a,b).…”

Section: Resultsmentioning

confidence: 99%

“…(e) Schematic illustration of the EMI shielding mechanism of AgNW@rGO. (f) Comparison of the EMI SE T of AgNW@rGO networks with that of other as-reported transparent EMI shielding materials, including AgNW networks, ,,− rGO–AgNW film, ITO–Ag–ITO film, ITO–Au–ITO film, MXene–CNT composite film, graphene–metal mesh, AgNW–Cu composite film, Ni/Ni–Ag meshes, , AgNW–Fe 3 O 4 network, AgNW mesh, Co-doped SnO 2 film, and Ti 3 C 2 T x film …”

Section: Resultsmentioning

confidence: 99%

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Reduced Graphene Oxide Conformally Wrapped Silver Nanowire Networks for Flexible Transparent Heating and Electromagnetic Interference Shielding

et al. 2020

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Metal nanowire networks (MNNs) are promising as transparent electrode materials for a diverse range of optoelectronic devices and also work as active materials for electrical heating and electromagnetic interference (EMI) shielding applications. However, the relatively low performance and poor durability of MNNs are limiting the practical application of the resulting devices. Here, we report a controllable approach to enhance the conductivity and the stability of MNNs with their transmittance remaining unchanged, in which reduced graphene oxide conformally wrapped silver nanowire networks (AgNW@rGO networks) are synthesized by selective electrodeposition of GO nanosheets on AgNWs followed by a pulsed laser irradiation treatment. Experimental characterizations and finite-difference time-domain simulations indicate that pulsed laser irradiation at a specific wavelength not only reduces the GO but also welds the AgNWs together through a surface plasmon resonance process. As a result, the AgNW@rGO networks exhibit low sheet resistance of 3.3 Ω/□, average transmittance of 91.1%, and good flexibility. Wrapping with rGO improves the maximum electrical heating temperature of the AgNW network transparent heaters due to the effective suppression of the oxidation and the migration of surface silver atoms. In addition, excellent EMI shielding effectiveness of up to 35.5 dB in the 8.2−12.4 GHz frequency range is obtained as a consequence of the combined effects of dual reflection, conduction loss, and multiple dielectric polarization relaxation processes.

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Section: Resultsmentioning

confidence: 96%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Reduced Graphene Oxide Conformally Wrapped Silver Nanowire Networks for Flexible Transparent Heating and Electromagnetic Interference Shielding

et al. 2020

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“…Indium-tin-oxide (ITO) thin film is composed of In 2 O 3 and SnO 2 and applied on transparent electrodes for touch screens, EMI shielding, storage devices, and photovoltaic solar cells [ 1 , 2 , 3 , 4 ]. ITO thin film has high conductivity, and good transparency and stability.…”

Section: Introductionmentioning

confidence: 99%

In Situ XANES Studies on Extracted Copper from Scrap Cu/ITO Thin Film in an Ionic Liquid Containing Iodine/Iodide

Huang¹,

Wei²

2022

Molecules

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Copper is coated on indium-tin-oxide (ITO) thin film to improve its electrical resistivity. In order to recycle the scrap Cu/ITO thin film, an ionic liquid (1-butyl-3-methyl imidazolium hexafluorophosphate ([C4mim][PF6])) containing iodine/iodide (IL-I) was used to extract copper at 303, 343, 413, 374, and 543 K. The extraction efficiency of copper from the scrap Cu/ITO thin film was >99% with IL-I. Using XRD, crystal In2O3 was found on the regenerated ITO thin film which had a resistivity similar to that of unused ITO thin film. Using X-ray absorption near edge structural (XANES) spectroscopy, at least two paths for the extraction of copper from the Cu/ITO thin film into IL-I were identified. Path I: Copper is stripped from the scrap Cu/ITO thin film and then interacts with I3− in the IL-I to form nano CuI. The nano CuI further interacts with I−. Path II: Copper interacts with I3− on the surface of the Cu/ITO thin film to form nano CuI. The nano CuI is further stripped into the IL-I to interact with I−. During extraction, the nanoparticle size could be increased in the IL-I by conglomeration due to fewer coordinating anions and decrease in the viscosity of IL-I at high temperatures. Furthermore, nanoparticle growth was affected by [PF6]− of the IL-I determined via 31P NMR.

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“…To realize transparent EMI shielding, various materials have been investigated such as transparent conductive coatings, ultrathin metal films, metallic meshes, and carbon-based materials. − Continuous conductive thin films, such as indium tin oxide (ITO) have only shown moderate attenuation of EM waves at suitable transparencies. Graphene coatings exhibit superior electrical conductivity, flexibility, and high transmittance, and graphene-based materials have attracted significant attention for EMI shielding. − However, it possesses only a low EMI SE of 2.27 dB per layer over the frequency range of 2.2–7 GHz with an optical absorption of 2.3%.…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic Interference Shielding by Transparent Graphene/Nickel Mesh Films

Tran

Nguyen

et al. 2020

ACS Appl. Nano Mater.

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In this work, we present efficient, robust, and transparent electromagnetic interference (EMI) shielding by a hybrid material comprised of a nickel (Ni) mesh and a conformal graphene coating. We demonstrate that a 20 nm-thick graphene/Ni hybrid mesh can provide EMI shielding effectiveness (SE) exceeding 12.1 dB (∼93.6% power attenuation) in the decimeter band while retaining a high visible transmittance of ∼83%. Its maximum achieved SE value was 26.6 dB (∼99.5% power attenuation) at 0.75 GHz. Furthermore, the thicker Ni mesh exhibited a higher EMI SE. Compared to a conventional Ni mesh, the hybrid mesh exhibits a higher SE and a greatly improved corrosion resistance. The graphene coating is directly grown on a Ni mesh via rapid annealing of solid carbon precursors under low vacuum. Scalable fabrication of the mesh was achieved by a self-formed TiO2 crack network template. Our results not only provide a promising material for high-performance EMI shielding in optoelectronics devices but also enable applications of EMI shielding in harsh environments.

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ITO/Au/ITO multilayer thin films on transparent polycarbonate with enhanced EMI shielding properties

Cited by 47 publications

References 36 publications

Reduced Graphene Oxide Conformally Wrapped Silver Nanowire Networks for Flexible Transparent Heating and Electromagnetic Interference Shielding

Reduced Graphene Oxide Conformally Wrapped Silver Nanowire Networks for Flexible Transparent Heating and Electromagnetic Interference Shielding

In Situ XANES Studies on Extracted Copper from Scrap Cu/ITO Thin Film in an Ionic Liquid Containing Iodine/Iodide

Electromagnetic Interference Shielding by Transparent Graphene/Nickel Mesh Films

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