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Scanning focused laser activation of carbon nanotube cathodes for field emission flat panel displays

机译：用于场发射平板显示器的碳纳米管阴极的扫描聚焦激光激活

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摘要

We report a scanning focused laser technique for pixel-by-pixel activation of the screen-printed carbon nanotube cathodes for field emission flat panel displays. The turn-on and working field of the cathodes became as low as 1.96 V mu m(-1) and 2.70 V mu m(-1), respectively, after 57 kW cm(-2) laser irradiation. The current density even reached 4.00 mA cm(-2) at 2.90 V mu m(-1), which was 1285 times larger than the untreated one. This dramatic enhancement is due to the fact that the focused laser can remove not only the surface contamination, but can change the geometric structure of the treated pixel as well. More importantly, these laser activated carbon nanotube cathodes show much more uniform field emission performances, as required by flat panel displays.
机译：我们报告了用于场发射平板显示器的丝网印刷碳纳米管阴极的逐像素激活的扫描聚焦激光技术。在57 kW cm（-2）激光照射后，阴极的开启和工作场分别低至1.96 Vμm（-1）和2.70 Vμm（-1）。电流密度在2.90 Vμm（-1）时甚至达到4.00 mA cm（-2），比未处理的电流大1285倍。这种显着增强是由于以下事实：聚焦的激光不仅可以消除表面污染，而且还可以改变处理后像素的几何结构。更重要的是，这些激光活化的碳纳米管阴极显示出的平板显示器所需的场发射性能要均匀得多。

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