Versatility of bilayer metal oxide coatings on silver nanowire networks for enhanced stability with minimal transparency loss

Aghazadehchors, Sara; Nguyễn, Việt Hương; Muñoz‐Rojas, David; Jiménez, Carmen; Rapenne, Laëtitia; Nguyen, Ngoc Duy; Bellet, Daniel

doi:10.1039/c9nr05658k

Cited by 43 publications

(49 citation statements)

References 61 publications

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“…The detailed mechanism of such a crack formation has been studied and reported previously. [24,25] Conversely to the stabilizing effect observed for previously reported nanocomposites made with ZnO, [29,30] ZnO:Al, [31] ZnO/Al 2 O 3 , [32] in these experiments both bare AgNW and nanocomposite samples underwent a degradation at rather similar voltage values, although with a lower peak resistance for the coated samples.…”

Section: Resultsmentioning

confidence: 67%

Planar and Transparent Memristive Devices Based on Titanium Oxide Coated Silver Nanowire Networks with Tunable Switching Voltage

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Threshold switching devices are fundamental active elements in more than Moore approaches, integrating the new generation of non‐volatile memory devices. Here, the authors report an in‐plane threshold resistive switching device with an on/off ratio above 106, a low resistance state of 10 to 100 kΩ and a high resistance state of 10 to 100 GΩ. Our devices are based on nanocomposites of silver nanowire networks and titanium oxide, where volatile unipolar threshold switching takes place across the gap left by partially spheroidized nanowires. Device reversibility depends on the titanium oxide thickness, while nanowire network density determines the threshold voltage, which can reach as low as 0.16 V. The switching mechanism is explained through percolation between metal–semiconductor islands, in a combined tunneling conduction mechanism, followed by a Schottky emission generated via Joule heating. The devices are prepared by low‐cost, atmospheric pressure, and scalable techniques, enabling their application in printable, flexible, and transparent electronics.

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Section: Resultsmentioning

confidence: 67%

Planar and Transparent Memristive Devices Based on Titanium Oxide Coated Silver Nanowire Networks with Tunable Switching Voltage

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“…[ 203 ] Of note, an approach has recently been used to enhance the transmittance of AgNW networks coated with protective metal oxide bilayers thanks to an anti‐reflective coating. [ 214 ]…”

Section: The Investigated Materials Technologies For Transparent Heatersmentioning

confidence: 99%

Transparent Heaters: A Review

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et al. 2020

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Transparent heaters (TH) have attracted intense attention from both scientific and industrial sectors due to the key role they play in many technologies, including smart windows, deicers, defoggers, displays, actuators, and sensors. While transparent conductive oxides have dominated the field for the past five decades, a new generation of THs based on nanomaterials has led to new paradigms in terms of applications and prospects in the past years. Here, the most recent developments and strategies to improve the properties, stability, and integration of these new THs are reviewed.

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“…For instance, by controlling the voltage more precisely, voltage plateaus were shown to potentially be preferable to ramps for evaluating the long‐term aging behavior at lower input stress but for long durations (Figure 8d). [ 58 ] Lastly, an in situ electrical resistance measurement approach can also be used to evaluate the stability of MNW under mechanical stresses, such as bending [ 127 ] or stretching cycles. [ 128 ]…”

Section: Measurement Tools To Characterize Degradation and Failurementioning

confidence: 99%

“…In particular, this characterization approach was recently used to show that MNW networks covered with additional oxide layers (deposited by spatial atomic layer deposition (ALD)) can achieve higher voltage limits. [ 58,127 ] In another example, improved electrical stability of AgNW networks was demonstrated by encapsulating MNWs with a doubled‐sided GO coating. [ 87 ] This in situ measurement approach is also highly versatile, allowing for easy modification of the nature of the input stress.…”

Section: Measurement Tools To Characterize Degradation and Failurementioning

confidence: 99%

Failing Forward: Stability of Transparent Electrodes Based on Metal Nanowire Networks

et al. 2020

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Metal nanowire (MNW)‐based transparent electrode technologies have significantly matured over the last decade to become a prominent low‐cost alternative to indium tin oxide (ITO). Beyond reaching the same level of performance as ITO, MNW networks offer additional advantages including flexibility and low materials cost. To facilitate adoption of MNW networks as a replacement to ITO, they must overcome their inherent stability issues while maintaining their properties and cost‐effectiveness. Herein, the fundamental failure mechanisms of MNW networks are discussed in detail. Recent strategies to computationally model MNWs from the nano‐ to macroscale and suggest future work to capture dynamic failure to unravel mechanisms that account for convolution of the failure modes are highlighted. Strategies to characterize MNW network failure in situ and postmortem are also discussed. In addition, recent work about improving the stability of MNW networks via encapsulation is discussed. Lastly, a perspective is given on how to frame the requirements of MNW‐encapsulant hybrids with reference to their target applications, namely: solar cells, transparent film heaters, sensors, and displays. A cost analysis to comment on the feasibility of implementing MNW hybrids is provided, and critical areas to focus on for future work on MNW networks are suggested.

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Versatility of bilayer metal oxide coatings on silver nanowire networks for enhanced stability with minimal transparency loss

Abstract: Silver nanowire (AgNW) networks have been lately much investigated thanks to their physical properties and are therefore foreseen to play a key role in many industrial devices as transparent electrodes, but their stability can be an issue.

Cited by 43 publications

References 61 publications

Planar and Transparent Memristive Devices Based on Titanium Oxide Coated Silver Nanowire Networks with Tunable Switching Voltage

Planar and Transparent Memristive Devices Based on Titanium Oxide Coated Silver Nanowire Networks with Tunable Switching Voltage

Transparent Heaters: A Review

Failing Forward: Stability of Transparent Electrodes Based on Metal Nanowire Networks

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