Vacuum-Free, Maskless Patterning of Ni Electrodes by Laser Reductive Sintering of NiO Nanoparticle Ink and Its Application to Transparent Conductors
Vacuum-Free, Maskless Patterning of Ni Electrodes by Laser Reductive Sintering of NiO Nanoparticle Ink and Its Application to Transparent Conductors
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DOI：
10.1021/nn503383z
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发表时间：
2014-10-01
期刊：
影响因子：
17.1
通讯作者：
Grigoropoulos, Costas P.
中科院分区：
文献类型：
--
作者：
Lee, Daeho;Paeng, Dongwoo;Grigoropoulos, Costas P.
我们介绍了一种通过NiO纳米颗粒（NP）墨水的选择性激光直写（LDW）直接图案化Ni电极的方法。高分辨率的镍图案产生从NiO NP薄膜的无真空，无光刻，和解决方案可处理的路线。特别地，连续波激光器用于在环境条件下借助于油墨溶剂中的还原剂对金属氧化物进行LDW还原烧结。薄（类似于40纳米）镍电极的光滑的金属表面，具有光滑的形态和良好的边缘清晰度可以制造。通过应用该方法，我们展示了用于触摸屏面板应用的高透射率（>87%）导电面板。Ni电极的电阻率比块体Ni的电阻率高不到一个数量级。机械弯曲测试、胶带拉伸测试和超声波浴测试证实了电极在玻璃和聚合物基板上的牢固粘附。
We introduce a method for direct patterning of Ni electrodes through selective laser direct writing (LDW) of NiO nanoparticle (NP) ink. High-resolution Ni patterns are generated from NiO NP thin films by a vacuum-free, lithography-free, and solution-processable route. In particular, a continuous wave laser is used for the LDW reductive sintering of the metal oxide under ambient conditions with the aid of reducing agents in the ink solvent. Thin (similar to 40 nm) Ni electrodes of glossy metallic surfaces with smooth morphology and excellent edge definition can be fabricated. By applying this method, we demonstrate a high transmittance (>87%), electrically conducting panel for a touch screen panel application. The resistivity of the Ni electrode is less than an order of magnitude higher compared to that of the bulk Ni. Mechanical bending test, tape-pull test, and ultrasonic bath test confirm the robust adhesion of the electrodes on glass and polymer substrates.