Department of Chemistry and Biochemistry, University of Windsor , Windsor, Ontario, Canada N9B 3P4.
ACS Appl Mater Interfaces. 2013 Oct 23;5(20):10165-72. doi: 10.1021/am402847y. Epub 2013 Oct 3.
We present new flexible, transparent, and conductive coatings composed of an annealed silver nanowire network embedded in a polyurethane optical adhesive. These coatings can be applied to rigid glass substrates as well as to flexible polyethylene terephthalate (PET) plastic and elastomeric polydimethylsiloxane (PDMS) substrates to produce highly flexible transparent conductive electrodes. The coatings are as conductive and transparent as indium tin oxide (ITO) films on glass, but they remain conductive at high bending strains and are more durable to marring and scratching than ITO. Coatings on PDMS withstand up to 76% tensile strain and 250 bending cycles of 15% strain with a negligible increase in electrical resistance. Since the silver nanowire network is embedded at the surface of the optical adhesive, these coatings also provide a smooth surface (root mean squared surface roughness<10 nm), making them suitable as transparent conducting electrodes in flexible light-emitting electrochemical cells. These devices continue to emit light even while being bent to radii as low as 1.5 mm and perform as well as unstrained devices after 20 bending cycles of 25% tensile strain.
我们提出了一种新的灵活、透明、导电的涂层，由嵌入在聚氨酯光学胶中的退火银纳米线网络组成。这些涂层可以应用于刚性玻璃基底以及柔性的聚对苯二甲酸乙二醇酯（PET）塑料和弹性聚二甲基硅氧烷（PDMS）基底，以制作出高柔韧性透明导电电极。这些涂层的导电性和透光性与玻璃上的氧化铟锡（ITO）薄膜相当，但它们在高弯曲应变下仍保持导电，并且比 ITO 更耐划伤和磨损。PDMS 上的涂层可承受高达 76%的拉伸应变和 250 次 15%应变的弯曲循环，电阻几乎没有增加。由于银纳米线网络嵌入在光学胶的表面，这些涂层还提供了一个光滑的表面（均方根表面粗糙度<10nm），使它们适合作为柔韧性发光电化学电池中的透明导电电极。这些器件即使在弯曲半径低至 1.5mm 的情况下也能继续发光，并且在经过 20 次 25%拉伸应变的弯曲循环后，性能与未受应变的器件相当。
