Metallic Grid Electrode Fabricated via Flow Coating for High-Performance Flexible Piezoelectric Nanogenerators
Metallic Grid Electrode Fabricated via Flow Coating for High-Performance Flexible Piezoelectric Nanogenerators
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DOI：
10.1021/acs.jpcc.5b00771
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发表时间：
2015-04-09
影响因子：
3.7
通讯作者：
Cho, Jeong Ho
中科院分区：
文献类型：
--
作者：
Park, Jae Hoon;Lee, Dong Yun;Cho, Jeong Ho
基于金属网格结构的透明导电电极（TCE）因其优异的导电性和柔韧性而被广泛探索用于柔性和透明电子产品。以前的制造方法因其工艺的复杂性和费用而受到限制。在这里，我们介绍了一种简单且经济高效的流涂方法，用于使用银纳米粒子（AgNP）制备柔性透明金属网格电极。该过程仅包括两个步骤，包括图案化和烧结水平银纳米粒子线，然后图案化和烧结纵向银纳米粒子线。通过改变 AgNP 溶液的浓度可以轻松控制网格宽度，并且可以通过改变间歇停止之间平移台移动的距离来控制网格间距。优化后的Ag栅电极在550 nm处的透光率为86%，方块电阻为174 O/sq。由此产生的银栅电极成功地用于制备柔性压电纳米发电机。该器件表现出良好的性能，包括5V的输出电压和0.5μA/cm(2)的输出电流密度。
Transparent conducting electrodes (TCEs) based on metallic grid structures have been extensively explored for use in flexible and transparent electronics according to their excellent conductivity and flexibility. Previous fabrication methods have been limited by the complexity and expense of their processes. Here, we have introduced a simple and cost-effective flow-coating method for preparing flexible and transparent metallic grid electrodes using silver nanoparticles (AgNPs). The process comprises only two steps, including patterning and sintering the horizontal AgNPs lines, followed by patterning and sintering the longitudinal AgNPs lines. The grid width could be easily controlled by varying the concentration of the AgNP solution and the grid spacing could be controlled by varying the distance moved by a translation stage between intermittent stops. The optimized Ag grid electrode exhibited an optical transmittance at 550 nm of 86% and a sheet resistance of 174 O/sq. The resulting Ag grid electrodes were successfully used to prepare a flexible piezoelectric nanogenerator. This device showed good performance, including an output voltage of 5 V and an output current density of 0.5 mu A/cm(2).