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Stabilisation of Cu films in WO3/Ag/Cu:Al/WO3 structures through their doping by Al and Ag
摘要： Indium tin oxide (ITO) is the most common transparent conductive material used in industrial processes. It has many advantages, but also some disadvantages: Indium is scarce and ITO deposition techniques are aggressive for organic materials, making it difficult to use it as top electrode in organic devices. Moreover its ceramic structure limits its application in flexible devices. Among the possible new In free transparent conductive electrode, dielectric/metal/dielectric multilayer structures such as WO3/M/WO3 appear very promising. However, silver, which is the metal the more often used is expensive. Therefore it would be very profitable if copper, which is abundant on earth, could be substituted for silver. However the stability with time of the structure using Cu is questionable due to the high Cu diffusivity. In the present manuscript we improve significantly the lifetime of the structures using the alloy Cu:Al when a thin silver layer (2 nm) is introduced between the WO3 bottom layer and the Cu:Al. It is shown that the Cu atom mobility is significantly decreased by the presence of Al of the alloy and of Ag which appears to diffuse into the metal layer forming an eutectic with Cu.
关键词： Copper aluminum alloy,Tungsten oxide,Indium tin oxide-free,Transparent electrode,Multilayer structures,Flexible electrode
更新于2025-09-10 09:29:36
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[IEEE 2018 19th International Conference on Electronic Packaging Technology (ICEPT) - Shanghai (2018.8.8-2018.8.11)] 2018 19th International Conference on Electronic Packaging Technology (ICEPT) - Fabrication and Properties of Silver Nanowire Flexible Transparent Electrode
摘要： Transparent electrodes with high transmittance and high conductivity are important components in display devices. Silver nanowires (AgNWs) are considered as the most promising new electrode materials because of the low cost and high conductivity, especially in flexible displays. In this paper, we first synthesized silver nanowires as electrode materials using the polyol method. Secondly, the silver nanowires were spin-coated on glass substrates and nanopaper to produce transparent electrodes. Finally, the properties of two types of transparent electrodes were investigated, including surface morphology, UV spectrum, square resistance, and light transmittance.
关键词： silver nanowires,nanopaper,transparent electrode,flexible
更新于2025-09-10 09:29:36
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High-Performance Transparent and Flexible Electrodes Made by Flash-Light Sintering of Gold Nanoparticles
摘要： Metallic nanowire-based transparent electrodes (TEs) are potential alternatives to indium tin oxide (ITO). To achieve a high performance [sheet resistance (Rs) <100 Ω/sq, transmittance (T%) > 90%], the nanowires must have a high length-to-diameter (L/D) ratio to minimize the number of wire-to-wire junctions. Attempts to produce TEs with gold nanowires have been made, and the results reveal difficulties in achieving the requirements. A successful strategy involves creating templated gold nanonetworks through multiple procedures. Here, we present a simple and efficient method that uses flash-light sintering of a gold nanonetwork film into gold TEs (Rs: 82.9 Ω/sq, T%: 91.79%) on a thin polycarbonate film (25 μm). The produced gold TEs have excellent mechanical, electrical, optical and chemical stabilities. Mechanisms of the formation of gold nano-networks and the effect of flash-light have been analyzed. Our findings provide a scalable process for producing transparent and flexible gold electrodes with a total processing time of less than 8 min without the use of heating, vacuum processing, organic chemicals and without any material loss. This is possible because all the gold nanoparticles have been aggregated and filtrated on the filter membranes. The area density of gold is 0.094 g/m2 leading low material costs, which is very competitive with the price of commercial TEs.
关键词： flexible electrode,high performance,transparent electrode,gold nanoparticles,flash-light sintering
更新于2025-09-04 15:30:14
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Solution electrowriting of highly stable TiN nanofiber pattern for transparent electrode under extreme environment
摘要： The fast developing electronic industry boosts higher demand of transparent electrode. Nanofiber network design provides a new platform for finding alternative materials to replace the traditional indium-doped tin oxide (ITO) film as transparent electrode. In this work, the TiN nanofiber network with a micron-scale precise geometry was firstly assembled by solution electrowriting. Unlike the ordinary opaque TiN film or bulk, the geometry patterned TiN nanofiber network achieved an ultrahigh transparency above 90%. Due to the electrical conductive virtue of TiN, the network reached a relatively low sheet resistance of 10.3 Ω/sq that can be comparable to ITO and even metal nanofibers. The combination of high transparency and low sheet resistance in TiN nanofiber network paves a way for its application as transparent electrode. Moreover, the figure-of-merit of TiN nanofiber transparent electrode was controllable by simply adjusting the geometry size of TiN nanofiber pattern. A series of oxidation resistance and corrosion resistance tests were additionally carried out, which caused little effect on the performance of TiN nanofiber transparent electrode. This excellent antioxidative and anticorrosive property demonstrates the high chemical durability of TiN nanofiber network, especially compared to metal nanofiber networks.
关键词： Solution electrospinning,Transparent electrode,Figure of merit,Nanofiber network,Chemical stability
更新于2025-09-04 15:30:14