Organic electronics is one of the most promising technologies for creating flexible electronic devices using low temperature plastic compatible processes. However, contact resistances of organic transistors remain one of the most significant hurdles to achieving high performance circuits in this technology. Short channel devices (<10 μm), essential for industrial applications, typically exhibit only a fraction of the performance promised by the high mobility results achieved in laboratory research on longer channel lengths (a few tens of μm or even longer). In this paper, we present results demonstrating solution processed devices having width-normalised contact resistances of less than 300 Ohm cm and show how these can be made into 5-stage ring oscillator circuits with the highest frequency of 1.08 MHz, corresponding to a stage delay of 93 ns. This is achieved through use of a thin, uniform high performance organic semiconductor (OSC) film made possible through formulation of a small-molecule semiconductor in a high-k binder polymer. The OSC formulation is employed in a fabrication process compatible with mass manufacture, opening up the route to commercial products made from organic thin-film transistor (OTFT) devices with high performance.

有机电子技术是使用低温塑料兼容工艺制造柔性电子设备的最有前途的技术之一。然而，在该技术中，有机晶体管的接触电阻仍然是实现高性能电路的最重要的障碍之一。对于工业应用而言必不可少的短通道设备（<10μm），通常仅表现出在较长的通道长度（几十μm甚至更长）的实验室研究中获得的高迁移率结果所承诺的性能的一小部分。在本文中，我们提供的结果证明了溶液处理的器件具有小于300 Ohm cm的宽度归一化接触电阻，并展示了如何将其制成具有1.08 MHz最高频率（对应于级延迟）的5级环形振荡器电路93 ns。这是通过使用薄的，均匀的高性能有机半导体（OSC）薄膜实现的，该薄膜可通过在高k粘合剂聚合物中配制小分子半导体来实现。OSC配方用于与批量生产兼容的制造工艺中，从而开辟了由高性能有机薄膜晶体管（OTFT）器件制成的商用产品的途径。