High transparent, low surface resistance ZTO/Ag/ZTO multilayer thin film electrodes on glass and polymer substrates

Ekmekcioglu, Merve; Erdogan, Nursev; Astarlioglu, Aziz Taner; Yigen, Serap; Aygün, Gülnur; Özyüzer, L.; Özdemir, Mehtap

doi:10.1016/j.vacuum.2021.110100

Cited by 27 publications

(6 citation statements)

References 43 publications

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“…By solving the equation ( 8) for the GM approach, and the equation ( 9) for the HM approach, the ϕ values were found. Then, the W a values for TCO films to the Ag interlayer were calculated using equation (7).…”

Section: Estimation Of the Work Of Adhesion Between Tcos And Ag Inter...mentioning

confidence: 99%

“…However, a single layer of TCO films is often far from to meet the desired level of electrical conductivity, and the incorporation of a thin metal film between TCO layers without deteriorating the optical transparency is one of the options used to overcome this problem [2]. Ag is the most widely used interlayer material among metals due to its low electrical resistivity and suitability for magnetron sputtering systems [2][3][4][5][6][7]. Thus, the preparation of TCO/Ag/TCO multilayer films is a hot topic, and the physical properties of these sandwich films have been extensively studied previously for use in many applications such as organic light emitting diodes [8], ultraviolet light emitting diodes [9], electrochromic devices [10], organic solar cells [11], photovoltaicthermoelectric hybrid systems [12] and flexible electronics [13].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Surface free energy and wettability properties of transparent conducting oxide-based films with Ag interlayer

Özbay

Erdogan²,

Erden

et al. 2021

Applied Surface Science

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Section: Estimation Of the Work Of Adhesion Between Tcos And Ag Inter...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Surface free energy and wettability properties of transparent conducting oxide-based films with Ag interlayer

Özbay

Erdogan²,

Erden

et al. 2021

Applied Surface Science

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“…While indium tin oxide (ITO) has been held in high regard for such applications, technical issues, such as its brittleness and annealing requirements which may be incompatible with temperature-sensitive substrates (e.g. : polymer substrates), as well as supply and pricing issues, have highlighted the need for alternative TCs. − …”

Section: Introductionmentioning

confidence: 99%

“…Silver (Ag)-based layers are one such alternative, and multiple layer morphologies have been investigated, including continuous Ag films, − Ag nanowire structures, , and patterned Ag grid layers. , In this work, we fabricate Ag-based TC coatings with a dielectric-metal-dielectric (DMD) architecture while specifically focusing on optimizing the antireflective (AR) properties via optical interference.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Durability and Antireflective Performance of Ag-Based Transparent Conductors Achieved via Controlled N-Doping

Rumsby,

Baloukas,

Zabeida

et al. 2024

ACS Appl. Mater. Interfaces

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Ag-based transparent conductors (TCs) are often proposed as an alternative to ITO coatings. However, while their performance has been widely demonstrated, their environmental durability is frequently overlooked or addressed with the use of highly specific encapsulating layers. In this work, the durability and antireflective performance of Ag-based TCs are simultaneously enhanced. To do so, a transfer matrix modeling approach is used to determine the general requirements for high performance antireflective properties as a function of Ag thickness and dielectric refractive indices, offering more widely applicable insight into stack optimization. Coating durability is investigated as a function of the Ag microstructure, which is modified by altering the N 2 concentration used for doping of the Ag layer and the selection of the seed layer. Increasing N 2 concentration during Ag deposition was found to decrease grain size and durability of Ag coatings deposited on Si 3 N 4 whereas all coatings on ZnO (Al) showed higher stability. Significantly higher durability is found when specifically combining intermediate N 2 concentrations in the sputtering gas mixture (Ag (N) :5%, compared to 0% and 50%) and a ZnO (Al) seed layer, and a mechanism accounting for this increased durability is proposed. The addition of NiCrN x protective coatings increases the system durability without altering these trends. These findings are combined to fabricate a highly performant Ag-based TC (T V = 89.2%, R V FS = 0.23%, 21.4 Ω), which shows minimal property changes following corrosion testing by immersion in a heated and highly concentrated aqueous NaCl solution (200 g/L, 50 °C).

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“…Several previous studies have investigated the optical and electrical properties of ZTO/Ag/ZTO multilayer films on glass and polymer substrates. However, the largest substrates utilized were limited to laboratory scales, up to 15 cm, enabled by roll-to-roll sputtering which is not applicable for rigid, large-scale, free-form objects [46][47][48][49][50][51]. Their EMI shielding in a broad frequency range at a large scale, which needs a continuous and uniform coating network over a large area, has never been reported to date.…”

Section: Introductionmentioning

confidence: 99%

Large-area (50 cm × 50 cm) optically transparent electromagnetic interference (EMI) shielding of ZTO/Ag/ZTO: an analytical/numerical and experimental study of optoelectrical and EMI shielding properties

Astarlioglu,

Oz,

Unal

et al. 2024

J. Phys. D: Appl. Phys.

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Transparent conducting oxides (TCOs), exhibiting both high optical transparency and low electrical resistivity, are commonly employed in optoelectronic devices. However, acquiring a balance between these optical and electrical properties in a uniform way over large areas has been a pending challenge, which is essential to achieving optically transparent electromagnetic interference (EMI) shielding surfaces. In this study, we propose and demonstrate a stratified thin film structure consisting of zinc-doped tin oxide (Zn2SnO4, ZTO) as TCO along with a metal layer of silver (Ag) deposited on a large area of 50 cm × 50 cm polycarbonate (PC) substrate enabled by a scanning magnetron sputtering gun. We achieved high EMI shielding of 99.9% at the optical transparency of 68% in the visible spectrum by engineering the stratified architecture of ZTO/Ag/ZTO. The Ag layer of 18 nm in thickness with a sheet resistance of 10 Ω/sq yields shielding effectiveness (SE) of 27 dB in a wide frequency range of 2 – 20 GHz. The bottom and top ZTO layers, 20 and 40 nm thick, respectively, provide the lowest optical loss of 13% across 400 – 700 nm. The structure's EMI shielding, optical and structural performances were systematically characterized through a free-space focused-beam system, UV-Vis spectrophotometer, ellipsometry, focused ion-beam cross-sectional sampling and imaging, transmission electron microscopy, atomic force microscopy and secondary ion mass spectroscopy. EMI shielding and optical performances were validated by CST Microwave Studio and the transfer matrix method, respectively. These findings indicate that the proposed multi-layer architecture holds great promise for large-area EMI shielding and other optoelectronic applications.

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High transparent, low surface resistance ZTO/Ag/ZTO multilayer thin film electrodes on glass and polymer substrates

Cited by 27 publications

References 43 publications

Surface free energy and wettability properties of transparent conducting oxide-based films with Ag interlayer

Surface free energy and wettability properties of transparent conducting oxide-based films with Ag interlayer

Enhanced Durability and Antireflective Performance of Ag-Based Transparent Conductors Achieved via Controlled N-Doping

Large-area (50 cm × 50 cm) optically transparent electromagnetic interference (EMI) shielding of ZTO/Ag/ZTO: an analytical/numerical and experimental study of optoelectrical and EMI shielding properties

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