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首页> 外文期刊>ACS applied materials & interfaces >Robust Design of a Particle-Free Silver-Organo-Complex Ink with High Conductivity and Inkjet Stability for Flexible Electronics
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Robust Design of a Particle-Free Silver-Organo-Complex Ink with High Conductivity and Inkjet Stability for Flexible Electronics

机译:柔性电子高导电性和喷墨稳定性的无颗粒银-有机复合油墨的稳健设计

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摘要

Currently, silver-nanoparticle-based inkjet ink is commercially available. This type of ink has several serious problems such as a complex synthesis protocol, high cost, high sintering temperatures (similar to 200 degrees C), particle aggregation, nozzle clogging, poor shelf life, and jetting instability. For the emerging field of printed electronics, these shortcomings in conductive inks are barriers for their widespread use in practical applications. Formulating particle-free silver inks has potential to solve these issues and requires careful design of the silver complexation. The ink complex must meet various requirements, such as in situ reduction, optimum viscosity, storage and jetting stability, smooth uniform sintered films, excellent adhesion, and high conductivity. This study presents a robust formulation of silver-organo-complex (SOC) ink, where complexing molecules act as reducing agents. The 17 wt % silver loaded ink was printed and sintered on a wide range of substrates with uniform surface morphology and excellent adhesion. The jetting stability was monitored for 5 months to confirm that the ink was robust and highly stable with consistent jetting performance. Radio frequency inductors, which are highly sensitive to metal quality, were demonstrated as a proof of concept on flexible PEN substrate. This is a major step toward producing high-quality electronic components with a robust inkjet printing process.
机译:当前,基于银纳米颗粒的喷墨油墨是可商购的。这种类型的油墨有几个严重的问题,例如复杂的合成方案,高成本,高烧结温度(约200摄氏度),颗粒聚集,喷嘴堵塞,保质期长和喷射不稳定性。对于新兴的印刷电子领域,导电油墨的这些缺点是其在实际应用中广泛使用的障碍。配制无颗粒的银油墨具有解决这些问题的潜力,并且需要仔细设计银络合物。油墨配合物必须满足各种要求,例如原位还原,最佳粘度,储存和喷射稳定性,光滑均匀的烧结膜,优异的附着力和高导电性。这项研究提出了一种可靠的银有机复合(SOC)油墨配方,其中复合分子充当还原剂。将17 wt%的载银油墨印刷并烧结在各种具有均匀表面形态和出色附着力的基材上。连续5个月对喷射稳定性进行了监测,以确认墨水坚固且高度稳定,喷射性能稳定。射频感应器对金属质量高度敏感,已被证明是在柔性PEN基板上的概念证明。这是通过可靠的喷墨印刷工艺生产高质量电子元件的重要一步。

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