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首页> 美国卫生研究院文献>Materials >Inkjet Printing of Polyacrylic Acid-Coated Silver Nanoparticle Ink onto Paper with Sub-100 Micron Pixel Size
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Inkjet Printing of Polyacrylic Acid-Coated Silver Nanoparticle Ink onto Paper with Sub-100 Micron Pixel Size

机译：在不到100微米像素尺寸的纸上喷墨打印聚丙烯酸涂层的银纳米颗粒油墨

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Printed electronics (PE) technology shows huge promise for the realisation of low-cost and flexible electronics, with the ability to pattern heat- or pressure-sensitive materials. In future developments of the PE market, the ability to produce highly conductive, high-resolution patterns using low-cost and roll-to-roll processes, such as inkjet printing, is a critical technology component for the fabrication of printed electronics and displays. Here, we demonstrate inkjet printing of polyacrylic acid (PAA) capped silver nanoparticle dispersions onto paper for high-conductivity electronic interconnects. We characterise the resulting print quality, feature geometry and electrical performance of inkjet patterned features and demonstrate the high-resolution printing, sub-100 micron feature size, of silver nanoparticle materials onto flexible paper substrate. Printed onto photo-paper, these materials then undergo chemically triggered sintering on exposure to chloride contained in the paper. We investigated the effect of substrate temperature on the properties of printed silver material from room temperature to 50 °C. At room temperature, the resistivity of single layer printed features, of average thickness of 500 nm and width 85 µm, was found to be 2.17 × 10−7 Ω·m or 13 times resistivity of bulk silver (RBS). The resistivity initially decreased with an increase in material thickness, when achieved by overprinting successive layers or by decreasing print pitch, and a resistivity of around 10 times RBS was observed after overprinting two times at pitch 75 µm and with single pass print pitch of between 60 and 80 µm, resulting in line thickness up to 920 nm. On further increases in thickness the resistivity increased and reached 27 times RBS at print pitch of 15 µm. On moderate heating of the substrate to 50 °C, more compact silver nanoparticle films were formed, reducing thickness to 200 nm from a single pass print, and lower material resistivity approaching five times RBS was achieved.
机译：印刷电子（PE）技术显示出对低成本和柔性电子产品实现的巨大希望，并具有对热敏或压敏材料进行构图的能力。在PE市场的未来发展中，使用低成本和卷对卷工艺（例如喷墨印刷）生产高导电性，高分辨率图案的能力是制造印刷电子产品和显示器的关键技术组件。在这里，我们演示了将聚丙烯酸（PAA）封端的银纳米颗粒分散体喷墨印刷到纸上的情况，以实现高导电性电子互连。我们表征了所得的打印质量，特征和喷墨图案特征的电气性能，并演示了将银纳米粒子材料高分辨率打印到亚微米级特征尺寸（小于100微米）的情况。这些材料被打印到相纸上，然后暴露于相纸中所含的氯化物，然后进行化学触发的烧结。我们研究了从室温到50°C衬底温度对印刷银材料性能的影响。在室温下，发现平均厚度为500 nm，宽度为85 µm的单层印刷特征的电阻率为2.17×10 −7 Ω·m，是大块银电阻率的13倍（ RBS）。电阻率最初随着材料厚度的增加而降低，这是通过对连续层进行叠印或通过减小打印间距来实现的，在以75 µm的间距叠印两次且单次打印间距为60之间时，观察到的电阻率约为RBS的10倍80 µm的线宽可达920 nm。随着厚度的进一步增加，电阻率在15 µm的打印间距下达到RBS的27倍。在将基板适度加热到50°C时，形成了更致密的银纳米颗粒膜，单次通过印刷将厚度减小到200 nm，并且材料电阻率降低了接近RBS的五倍。

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