Silver nanowire networks: Physical properties and potential integration in solar cells

Langley, Daniel; Giusti, G.; Lagrange, Mélanie; Collins, R.; Jiménez, Carmen; Bréchet, Y.; Bellet, Daniel

doi:10.1016/j.solmat.2013.09.015

Cited by 67 publications

(53 citation statements)

References 26 publications

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“…The resistance of the AgNW intersections mainly depends on the contact areas between these wires. To reduce the resistance at the intersection, a heat treatment step [32,33] or an optical postprocessing step like plasmonic/UV welding [34] and pulsed laser sintering [35] can be carried out which yields an intimate contact of wires due to a local sintering of wires at their contact areas [32,36].…”

Section: Effects Of Thermal Treatment On the Electrical Resistivity Omentioning

confidence: 99%

Encapsulation of silver nanowire networks by atomic layer deposition for indium-free transparent electrodes

et al. 2015

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Section: Effects Of Thermal Treatment On the Electrical Resistivity Omentioning

confidence: 99%

Encapsulation of silver nanowire networks by atomic layer deposition for indium-free transparent electrodes

et al. 2015

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“…1 It has even been shown that by further optimizing the deposition and post-deposition conditions, and the aspect ratio (length/diameter) of the nanowires, the resulting networks can surpass the electro-optical properties of (ITO). 9 AgNW networks have been investigated or even efficiently integrated into devices such as transparent heaters, [12][13][14][15] solar cells, [16][17][18][19][20] touch screens, 21,22 electromagnetic shielding 23 or antennas, 24 OLEDs, 25 in electrochromic devices, 26 for medical purposes 27 as well electrically conductive textiles 28 . Despite the attracting potentialities described here above, the integration of AgNW based TE in real devices is not yet widely considered in industrial devices due namely to their potential thermal 29 and electrical 30 instabilities, as well as low adhesion 7 and aging issues.…”

Section: Introductionmentioning

confidence: 99%

Stability Enhancement of Silver Nanowire Networks with Conformal ZnO Coatings Deposited by Atmospheric Pressure Spatial Atomic Layer Deposition

Khan

Nguyễn

Muñoz‐Rojas

et al. 2018

ACS Appl. Mater. Interfaces

106

143

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Silver nanowire (AgNW) networks offer excellent electrical and optical properties and have emerged as one of the most attractive alternatives to transparent conductive oxides to be used in flexible optoelectronic applications. However, AgNW networks still suffer from chemical, thermal, and electrical instabilities, which in some cases can hinder their efficient integration as transparent electrodes in devices such as solar cells, transparent heaters, touch screens, and organic light emitting diodes. We have used atmospheric pressure spatial atomic layer deposition (AP-SALD) to fabricate hybrid transparent electrode materials in which the AgNW network is protected by a conformal thin layer of zinc oxide. The choice of AP-SALD allows us to maintain the low-cost and scalable processing of AgNW-based transparent electrodes. The effects of the ZnO coating thickness on the physical properties of AgNW networks are presented. The composite electrodes show a drastic enhancement of both thermal and electrical stabilities. We found that bare AgNWs were stable only up to 300 °C when subjected to thermal ramps, whereas the ZnO coating improved the stability up to 500 °C. Similarly, ZnO-coated AgNWs exhibited an increase of 100% in electrical stability with respect to bare networks, withstanding up to 18 V. A simple physical model shows that the origin of the stability improvement is the result of hindered silver atomic diffusion thanks to the presence of the thin oxide layer and the quality of the interfaces of hybrid electrodes. The effects of ZnO coating on both the network adhesion and optical transparency are also discussed. Finally, we show that the AP-SALD ZnO-coated AgNW networks can be effectively used as very stable transparent heaters.

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“…Furthermore, we visualize these changes in the network, both experimentally using passive voltage contrast electron microscopy techniques, 20 and in simulations of nanowires as line segments connected in a two-dimensional plane by junctions that can either be capacitive before activation or resistive after activation. 9,19,[21][22][23][24] We compare devices of different electrode geometry: two flat electrodes, one serrated and one flat electrode, two serrated electrodes, and one pointed and one flat electrode. By extending our previously developed model of connectivity in these networks, 2 we can predict the effects of microstructuring electrodes on the activation voltage and sheet resistance of networks, confirmed here through experimental data.…”

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confidence: 99%

Effective Electrode Length Enhances Electrical Activation of Nanowire Networks: Experiment and Simulation

et al. 2014

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ABSTRACT. Networks comprised of randomly oriented overlapping nanowires offer the possibility of simple fabrication on a variety of substrates, in contrast with the precise placement required for devices with single or aligned nanowires. Metal nanowires typically have a coating of surfactant or oxide that prevents aggregation, but also prevents electrical connection.Prohibitively high voltages can be required to electrically activate nanowire networks, and even after activation many nanowire junctions remain non-conducting. Non-electrical activation methods can enhance conductivity but destroy the memristive behavior of the junctions that

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Silver nanowire networks: Physical properties and potential integration in solar cells

Abstract: International audienceno abstrac

Cited by 67 publications

References 26 publications

Encapsulation of silver nanowire networks by atomic layer deposition for indium-free transparent electrodes

Encapsulation of silver nanowire networks by atomic layer deposition for indium-free transparent electrodes

Stability Enhancement of Silver Nanowire Networks with Conformal ZnO Coatings Deposited by Atmospheric Pressure Spatial Atomic Layer Deposition

Effective Electrode Length Enhances Electrical Activation of Nanowire Networks: Experiment and Simulation

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