Improvement of corrosion resistance of transparent conductive multilayer coating consisting of silver layers and transparent metal oxide layers

Abstract

In situ fabrication of blue ceramic coatings on wrought Al Alloy 2024 by plasma electrolytic oxidation J. Vac. Sci. Technol. A 30, 021302 (2012) Influence of substrate temperature and bias voltage on properties of chromium nitride thin films deposited by cylindrical cathodic arc deposition J. Vac. Sci. Technol. A 29, 051515 (2011) Ultrathin TiSiN overcoat protection layer for magnetic media J. Vac. Sci. Technol. A 29, 051502 (2011) High-corrosion-resistant Al2O3 passivation-film formation by selective oxidation on austenitic stainless steel containing Al J. Vac. Sci. Technol. A 29, 021002 (2011) Low-energy ion bombardment to tailor the interfacial and mechanical properties of polycrystalline 3C-silicon carbide J.An optical filter for plasma display panel ͑PDP͒ requires an electromagnetic shield with very high ability. The authors investigated a transparent conductive multilayer coating consisting of silver ͑Ag͒ layers and transparent metal oxide layers. The durability of the multilayer sputter coating, including the silver layer, is very sensitive to the surrounding atmosphere. For example, after an exposure test they found discolored points on the multilayer sputter coatings, possibly caused by migration of silver atoms in the silver layers. In their investigation, they modified the top surface of the multilayer sputter coatings with transition metals to improve the corrosion resistance of the multilayer coating. Specifically, they deposited transition metals 0.5-2 nm thick on the top surface of the multilayer coatings by sputtering. They chose indium tin oxide ͑ITO͒ as the transparent metal oxide. They applied the multilayer sputter coatings of seven layers to a polyethylene terephthalate ͑PET͒ film substrate. A cross-sectional structure of the film with the multilayer coatings is PET film/ITO/Ag/ITO/Ag/ITO/Ag/ITO. They evaluated the corrosion resistance of the films by a salt-water immersion test. In the test, they immersed the film with multilayer coatings into salt water, and then evaluated the appearance, transmittance, and electrical resistance of the multilayer coatings. They investigated several transition metals as the modifying material, and found that titanium and tantalum drastically improved the resistance of the multilayer coatings to the salt-water exposure without a significant decline in transmittance. They also investigated the relation between elapsed time after deposition of the modifying materials and resistance to the salt water. Furthermore, they investigated the effects of a heat treatment and an oxide plasma treatment on resistance to the salt water.

Electrical, morphological, and electromagnetic interference shielding properties of silver nanowires and nanoparticles conductive composites

“…Silver is one of the best conductive substances, which contains unique properties in terms of high electrical conductivity [10], stretchability [11], salt spray mist corrosion durability [12,13], and wide applicable temperature range [14]. Much research [15e17] have investigated the electrical device applications using silver nanowires (AgNws).…”

The Effects of Corrosion, Fatigue, and Corrosion-fatigue of Multilayer Coated Polyesters for Flexible Electronics Applications

“…Koike et al [15] investigated the durability of the multilayer sputter coating including silver layer as the intermediate layer. After immersion in the 0.1-M sodium chloride solution for 17 h, white spots were found on the surface of the multilayer sputter coating resulting from the migration of Ag atoms from the Ag layer.…”

Resistivity optimization and properties of silver nanoparticles-filled alcohol-soluble conductive coating based on acrylic resin

“…Copper and nickel exhibit good electrical conductivity and low cost, but they are easily oxidized, resulting in unstable properties. 7 Silver, as one of the best conductive substances that contains unique properties in terms of high electrical conductivity, stretchability, 19 salt spray mist corrosion durability, 20 and wide applicable temperature range, 21 has been the focus of great interest. 22 However, silver is easy to subside and agglomerate on account of its high specific gravity and poor interfacial adhesion.…”

“…[23][24][25][26] Surface modification is a good method to avoid aggregation or subside and provide the interfacial adhesion between silver and matrix resin. 21 Matrix resin, as one of the most important component of conductive coating, was mainly used to make the conductive network formed between conductive fillers. Therefore, the property of conductive coating was deeply affected by the structure of matrix resin.…”