The applicability of inkjet-printed (opto-)electrical devices are hindered by their low lateral resolution, when compared to conventional techniques. The low lateral resolution is mainly caused by the flow and spreading of the functional ink on the substrate, which is determined by the substrate-ink-interaction. Recent approaches, that confine and control the spreading, have been developed. However, they suffer from low lateral resolution or the usage of physical barriers. The later needs an adjustment of the ink or may contain an overlaid height information. Both cases are not always applicable when fabricating functional devices. Herein, we report the utilization of a surface energy patterning approach based on siloxane self-assembled monolayers. The obtained energetic differences control the flow and suppress the spreading of the ink, without creating the necessity to alter the ink composition. Furthermore this approach leads to an improved structural fidelity and printing resolution of arbitrary shapes. With that, we were able to print silver- and gold-electrodes for organic filed-effect transistors with a channel length of <25 m, fabricating feature sizes below the footprint of a single drop. The electrical characterization of these transistors revealed that the utilization of this surface energy patterning has no negative influence on the device performance. The introduced approach facilitates the process development and improves the quality and resolution of printed features. This will facilitate the fabrication of high-quality and high resolution printed electronic devices.

与常规技术相比，喷墨打印的（光电）电气设备的适用性因其较低的横向分辨率而受到阻碍。横向分辨率低主要是由于功能性墨水在基材上的流动和扩散所致，这取决于基材与油墨的相互作用。已经开发了限制和控制扩散的最新方法。然而，它们遭受低横向分辨率或使用物理屏障的困扰。后者需要调整墨水，或者可能包含重叠的高度信息。在制造功能设备时，两种情况并不总是适用。在这里，我们报告了基于硅氧烷自组装单层的表面能构图方法的利用。所获得的能量差控制流量并抑制墨水的扩散，无需改变墨水成分。此外，该方法导致任意形状的结构保真度和印刷分辨率的提高。这样，我们就可以为有机场效应晶体管印刷银和金电极，其沟道长度小于25m，制造的特征尺寸小于一滴的足迹。这些晶体管的电气特性表明，利用这种表面能构图对器件性能没有负面影响。引入的方法有助于工艺开发并提高打印特征的质量和分辨率。这将有助于制造高质量和高分辨率的印刷电子设备。