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A Transparent, Smooth, Thermally Robust, Conductive Polyimide for Flexible Electronics

机译：透明，光滑，耐热，导电的聚酰亚胺，用于柔性电子

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In this work, a thermally and mechanically robust, smooth transparent conductor composed of silver nanowires embedded in a colorless polyimide substrate is introduced. The polyimide is exceptionally chemically, mechanically, and thermally stable. While silver nanowire networks tend not to be thermally stable to high temperatures, the addition of a titania coating on the nanowires dramatically increases their thermal stability. This allows for the polyimide to be thermally imidized at 360 degrees C with the silver nanowires in place, creating a smooth (<1 nm root mean square roughness), conductive surface. These transparent conducting substrate-cum-electrodes exhibit a conductivity ratio figure of merit of 272, significantly outperforming commercially available indium-tin-oxide (ITO)-coated plastics. The conductive polymide is subjected to various mechanical tests and is used as a substrate for a thermally deposited, flexible, organic light-emitting diode, which shows improved device performance compared to a control device made on ITO coated glass.
机译：在这项工作中，介绍了一种热和机械坚固，光滑的透明导体，该导体由嵌入无色聚酰亚胺衬底中的银纳米线组成。聚酰亚胺具有出色的化学，机械和热稳定性。尽管银纳米线网络往往对高温不具有热稳定性，但在纳米线上添加二氧化钛涂层可显着提高其热稳定性。这样就可以在适当的位置用银纳米线在360摄氏度下对酰亚胺进行热酰亚胺化，从而形成光滑（均方根粗糙度小于1 nm）的导电表面。这些透明的导电基材和电极的导电率品质因数为272，大大优于市售的氧化铟锡（ITO）涂层塑料。导电聚酰胺经过各种机械测试，并用作热沉积，柔性有机发光二极管的基板，与在ITO涂层玻璃上制成的控制装置相比，该装置显示出改善的装置性能。

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