Transparent Electrodes Fabricated via the Self-Assembly of Silver Nanowires Using a Bubble Template
Transparent Electrodes Fabricated via the Self-Assembly of Silver Nanowires Using a Bubble Template
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DOI：
10.1021/la300961m
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发表时间：
2012-06-26
期刊：
影响因子：
3.9
通讯作者：
Suganuma, Katsuald
中科院分区：
文献类型：
--
作者：
Tokuno, Takehiro;Nogi, Masaya;Suganuma, Katsuald
为了满足有机发光二极管和太阳能电池等广泛应用对透明电极的需求，需要透明电极作为氧化铟锡电极的替代品。在此，使用气泡模板的自组装方法为使用气泡模板中的银纳米线（AgNW）自组装来经济高效地制造具有高导电性和透明度的透明电极铺平了道路。首先将 AgNW 分散在用表面活性剂和增稠剂鼓泡的水中。此外，这些银纳米线是通过沿着气泡脊排列而成的。当含有AgNW的气泡夹在两个玻璃基板之间时，含有AgNW的气泡脊形成连续的多边形结构。风干后，在两个玻璃基板上形成网状结构。经过热处理后，网状结构演变成网状透明电极。 AgNW网状结构在200℃热处理20分钟后表现出6.2Ω/square的低方块电阻和84%的透明度。其性能高于具有随机AgNW网络的透明电极。此外，可以通过改变AgNW悬浮液的量和两个玻璃基板之间的空间来调节网状透明电极的电导率和透明度。
To shore up the demand of transparent electrodes for wide applications such as organic light emitting diodes and solar cells, transparent electrodes are required as an alternative for indium tin oxide electrodes. Herein the self-assembly method with a bubble template paves the way for cost-effective fabrication of transparent electrodes with high conductivity and transparency using self-assembly of silver nanowires (AgNWs) in a bubble template. AgNWs were first dispersed in water that was bubbled with a surfactant and a thickening agent. Furthermore, these AgNWs were assembled by lining along the bubble ridges. When the bubbles containing the AgNWs were sandwiched between two glass substrates, the bubble ridges including the AgNWs formed continuous polygonal structures. Mesh structures were formed on both glass substrates after air-drying. The mesh structures evolved into mesh transparent electrodes following heat-treatment. The AgNW mesh structure exhibited a low sheet resistance of 6.2 Omega/square with a transparency of 84% after heat treatment at 200 degrees C for 20 min. The performance is higher than that of transparent electrodes with random networks of AgNWs. Furthermore, the conductivity and transparency of the mesh transparent electrodes can be adjusted by changing the amount of the AgNW suspension and the space between the two glass substrates.