Indium tin oxide (ITO) is a transparent conducting material that is widely used in devices where high transparency of the electrodes is required, such as flat panel and liquid crystal displays, touch panels, smart windows, and many others. ITO layers are deposited on a large scale by magnetron sputtering and then structured by lithography to define desired patterns of transparent electrodes. Here, a method for direct printing of transparent conductive patterns from ITO nanoparticle ink is communicated. The method combines inkjet printing with fast flash lamp annealing whereby the main novelty is to use an additional layer of a colored organic dye onto printed ITO to increase light absorption. The dye coating is instantly heated together with the underlying ITO layer by a light pulse, leading to an instant rise of the surface temperature, which is translated into improved optoelectronic properties of the ITO layers. Inkjet‐printed ITO patterns processed with the dye‐assisted flash lamp annealing exhibit a transmittance of up to 88% at 550 nm and resistivity of 3.1 × 10⁻³ Ω cm. Transparent touch‐sensing trackpad and capacitive touch sensors are demonstrated based on the printed ITO patterns, which can be utilized in transparent security systems and other transparent Internet‐of‐Things devices.

中文翻译：

---

用于透明安全系统的喷墨印刷导电ITO图案

氧化铟锡（ITO）是一种透明的导电材料，广泛用于要求电极高度透明的设备中，例如平板和液晶显示器，触摸面板，智能窗户等。ITO层通过磁控溅射大规模沉积，然后通过光刻构造以定义所需的透明电极图案。在此，公开了一种用于从ITO纳米粒子油墨直接印刷透明导电图案的方法。该方法将喷墨印刷与快速闪光灯退火结合在一起，其中主要的新颖之处是在印刷的ITO上使用了一层有色有机染料，以增加光的吸收。染料涂层通过光脉冲立即与下面的ITO层一起加热，从而导致表面温度瞬间升高，这转化为ITO层的改进的光电性能。通过染料辅助闪光灯退火处理的喷墨印刷ITO图案在550 nm处的透射率高达88％，电阻率为3.1× 10 ^-3 Ω厘米。演示了基于印刷的ITO图案的透明触摸感应触控板和电容式触摸传感器，可将其用于透明安全系统和其他透明物联网设备。