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Flexible electroluminescent device with inkjet-printed carbon nanotube electrodes

机译：具有喷墨印刷的碳纳米管电极的柔性电致发光器件

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摘要

Carbon nanotube (CNTs) inks may provide an effective route for producing flexible electronic devices by digital printing. In this paper we report on the formulation of highly concentrated aqueous CNT inks and demonstrate the fabrication of flexible electroluminescent (EL) devices by inkjet printing combined with wet coating. We also report, for the first time, on the formation of flexible EL devices in which all the electrodes are formed by inkjet printing of low-cost multi-walled carbon nanotubes (MWCNTs). Several flexible EL devices were fabricated by using different materials for the production of back and counter electrodes: ITO/MWCNT and MWCNT/MWCNT. Transparent electrodes were obtained either by coating a thin layer of the CNTs or by inkjet printing a grid which is composed of empty cells surrounded by MWCNTs. It was found that the conductivity and transparency of the electrodes are mainly controlled by the MWCNT film thickness, and that the dominant factor in the luminance intensity is the transparency of the electrode.
机译：碳纳米管（CNT）墨水可为通过数字印刷生产柔性电子设备提供有效途径。在本文中，我们报告了高浓度水性CNT墨水的配方，并演示了通过喷墨印刷与湿法涂料相结合制造柔性电致发光（EL）器件的方法。我们还首次报道了柔性EL器件的形成，其中所有电极都是通过低成本多壁碳纳米管（MWCNT）的喷墨印刷形成的。通过使用不同的材料生产背电极和对电极，制造了几种柔性EL器件：ITO / MWCNT和MWCNT / MWCNT。透明电极可通过涂覆CNT的薄层或通过喷墨印刷由MWCNT包围的空电池组成的网格来获得。发现电极的电导率和透明度主要由MWCNT膜的厚度控制，并且亮度强度的主要因素是电极的透明度。

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