Polymer colour matching devices (POCOMAT)

有机TFT已经被开发用于柔性塑料基板上的广泛的显示器和集成电路应用。在显示应用方面，有机TFT已经达到了工业化的高级阶段。我们的工业合作伙伴塑料逻辑公司在塑料基板上生产包含100多万个OTFT的柔性显示器，用于轻型、坚固耐用的电子阅读器。与显示电路相比，OTFT的应用更难实现。这主要是由于有机半导体的迁移率相对较低(尽管近年来有很大改进，但仍“仅”在1cm2/vs的数量级上)，以及基于图形艺术的普通印刷技术的低分辨率，导致印刷OTFT的开关性能较差。我们克服印刷电子关键性能问题的方法一直是开发一种基于高分辨率印刷的OTFT(自对准打印(SAP)/自对准栅极(SAG)技术)制造工艺(Noh等人，自然纳米技术2,784(2007))，该工艺允许通过简单的喷墨打印技术制造具有亚微米沟道长度和低寄生栅极电容的TFT。在EPSRC/CIKC资助的Prime项目中，我们将这项技术开发成一个受控技术平台，用于制造通常具有100个TFT的集成电路。TFT的数量受到我们大学制造和测试基础设施的限制。Prime项目有两个主要技术目标：(A)确定先前开发的SAP/SAG工艺的可制造性，以缩小印刷有机TFT的规模；(B)将p型和n型有机半导体集成到这种缩小规模的印刷TFT中，以制造高产量、低功耗的印刷CMOS电路。拟议的后续资金项目的目标是将这一技术平台在特定的集成电路应用中商业化，该应用与我们目前的制造基础设施(约100个元件)实际可以实现的有限集成水平兼容。

Organic TFTs have been developed for a broad range of display and integrated circuit applications on flexible, plastic substrates. For display applications organic TFTs have reached an advanced stage of industrialisation. Our industrial partner, Plastic Logic, manufactures flexible displays comprising more than 1 million OTFTs on a plastic substrate for applications in lightweight, robust electronic readers. In contrast to displays circuit applications of OTFTs have been much harder to realize. This is mainly due to the poor switching performance of printed OTFTs arising as a consequence of the relatively low mobility of organic semiconductors (which in spite of dramatic improvements in recent years is still "only" on the order of 1 cm2/Vs) and the low resolution of common graphic arts based printing techniques. Our approach to overcome the critical performance issues of printed electronics has been to develop a high-resolution printing-based manufacturing process for OTFTs (self aligned printing (SAP) / self-aligned gate (SAG) technology) (Noh et al., Nature Nanotechnology 2, 784 (2007)), which allows fabrication of TFTs with submicrometer channel lengths and low parasitic gate capacitance by simple inkjet printing techniques. In the EPSRC/CIKC funded PRIME project we developed this technology into a controlled technology platform for fabrication of integrated circuits with typically 100 TFTs. The number of TFTs is limited by our university fabrication and testing infrastructure. The PRIME project had two main technological objectives: (a) to establish manufacturability of the previously developed SAP/SAG process for downscaling printed organic TFTs and (b) to integrate both p-type and n-type organic semiconductors into such downscaled, printed TFTs to allow fabrication of high yielding, low power printed CMOS circuits. The objective of the proposed follow-on funding project is to commercialize this technology platform in a specific integrated circuit application that is compatible with the limited integration level that we can realistically achieve with our current fabrication infrastructure (about 100 elements).