Integrated Nanosystems Research Facility, Department of Electrical Engineering and Computer Science, University of California, Irvine, California 92697, USA.
ACS Nano. 2011 Nov 22;5(11):8471-87. doi: 10.1021/nn201828y. Epub 2011 Oct 13.
While the potential for high mobility printed semiconducting nanotube inks has been clear for over a decade, a myriad of scientific and technological issues has prevented commercialization and practical use. One of the most challenging scientific problems has been to understand the relationship between the pristine, individual nanotube mobility (known to be in the 10,000 cm(2)/V·s range) and the as-deposited random network mobility (recently demonstrated in the 100 cm(2)/V·s range). An additional significant scientific hurdle has been to understand, manage, and ultimately eliminate the effects of metallic nanotubes on the network performance, specifically the on/off ratio. Additional scientific progress is important in understanding the dependence of nanotube length, diameter, and density on device performance. Finally, the development of ink formulations that are of practical use in manufacturing is of paramount importance, especially with regard to drying time and uniformity, and ultimately, the issue of scalability and cost must be addressed. Many of these issues have recently been investigated from a phenomenological point of view, and a comprehensive understanding is beginning to emerge. In this paper, we present an overview of solution-based printed carbon nanotube devices and discuss long-term technology prospects. While significant technical challenges still remain, it is clear that the prospects for the use of nanotube ink in a myriad of systems is feasible given their unmatched mobility and compatibility with heterogeneous integration into a variety of applications in printed and flexible electronics.
虽然高迁移率印刷半导体纳米管墨水具有很大的潜力已经很明显了，但十年来，有许多科学和技术问题阻碍了其商业化和实际应用。其中最具挑战性的科学问题之一是要了解原始的、单个纳米管迁移率（已知在 10000cm²/V·s 范围内）与沉积后随机网络迁移率（最近在 100cm²/V·s 范围内证明）之间的关系。另一个重要的科学障碍是理解、管理并最终消除金属纳米管对网络性能的影响，特别是开关比。在理解纳米管长度、直径和密度对器件性能的依赖性方面，还需要进一步的科学进展。最后，开发出在制造中实际应用的墨水配方非常重要，特别是在干燥时间和均匀性方面，最终必须解决可扩展性和成本问题。最近，从唯象的角度研究了许多这些问题，综合认识开始出现。本文综述了基于溶液的印刷碳纳米管器件，并讨论了长期的技术前景。尽管仍然存在重大的技术挑战，但很明显，鉴于纳米管墨水无与伦比的迁移率以及与各种应用中的异质集成的兼容性，在众多系统中使用纳米管墨水是可行的，这些应用包括印刷和柔性电子学。
