,Low-temperature-cured highly conductive composite of Ag nanowires & polyvinyl alcohol

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Flexible conductive films were fabricated from a low-temperature-cured,highly conductive composite of silver nanowires (as conducting filler) and polyvinyl alcohol (PVA,as binder).Sheet resistance of 0.12 D/sq,conductivity of 2.63 × 104 S/cm,and contact resistance of 1.0 Ω/cm2 were measured in the films,along with excellent resistance to scratching and good flexibility,making them suitable electrical contact materials for flexible optoelectronic devices.Effects of curing temperature,curing duration,film thickness,and nanowire length on the film’s electrical properties were studied.Due to the abundance of hydroxyl groups on its molecular chains,the addition of PVA improves the film’s flexibility and resistance to scratching.Increased nanowire density and nanowire length benefit film conductance.Monte Carlo simulation was used to further explore the impact of these two parameters on the conductivity.It was observed that longer nanowires produce a higher length-ratio of conducting routes in the networks,giving better film conductivity.
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