Highly flexible transparent electrodes based on mesh-patterned rigid indium tin oxide.
Highly flexible transparent electrodes based on mesh-patterned rigid indium tin oxide.
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DOI：
10.1038/s41598-018-20978-x
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发表时间：
2018-02-12
影响因子：
4.6
通讯作者：
Mizuno J
中科院分区：
文献类型：
--
作者：
Sakamoto K;Kuwae H;Kobayashi N;Nobori A;Shoji S;Mizuno J
我们开发了具有网格图案的高度可弯曲的透明氧化铟锡 (ITO) 电极，用于柔性电子设备。网格图案降低了拉应力并阻碍了裂纹的扩展。使用有限元方法进行的模拟证实，由于电极弯曲时柔性薄膜的应变逃逸，网格图案将拉伸应力降低了 10% 以上。所提出的图案化 ITO 电极通过光刻和湿法蚀刻简单地制造。网状ITO电极弯曲1000次后的电阻增加率比平面ITO电极低至少两个数量级。此外，图案化ITO电极的网状图案阻止了裂纹扩展。网状 ITO 电极用于液基有机发光二极管 (OLED)。 OLED在弯曲100次之前和之后显示出相同的电流密度-电压-亮度(J-V-L)曲线。这些结果表明，所开发的网格图案 ITO 电极对于柔性电子设备的使用具有吸引力。
We developed highly bendable transparent indium tin oxide (ITO) electrodes with a mesh pattern for use in flexible electronic devices. The mesh patterns lowered tensile stress and hindered propagation of cracks. Simulations using the finite element method confirmed that the mesh patterns decreased tensile stress by over 10% because of the escaped strain to the flexible film when the electrodes were bent. The proposed patterned ITO electrodes were simply fabricated by photolithography and wet etching. The resistance increase ratio of a mesh-patterned ITO electrode after bending 1000 times was at least two orders of magnitude lower than that of a planar ITO electrode. In addition, crack propagation was stopped by the mesh pattern of the patterned ITO electrode. A mesh-patterned ITO electrode was used in a liquid-based organic light-emitting diode (OLED). The OLED displayed the same current density-voltage-luminance (J-V-L) curves before and after bending 100 times. These results indicate that the developed mesh-patterned ITO electrodes are attractive for use in flexible electronic devices.
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