SBIR Phase I: Printed 3-D All Single-Walled Carbon Nanotube Transistors and Integrated Circuits

这个小企业创新研究第一阶段项目旨在进行超纯半导体和金属单壁碳纳米管（SWCNT）油墨作为薄膜晶体管通道材料和电极的可行性研究，并在二维（2-D）和三维（3-D）架构中制造全SWCNT电路，如逆变器（5 V）和环形振荡器（1 kHz）。目前的趋势是增加每面积的电子功能，提供光学透明度，灵活性和更低的成本，正在推动使用印刷电子产品生产产品。该项目将利用现有的喷墨打印技术来实现全swcnts薄膜晶体管和集成电路。为了增加面功能密度并克服互连寄生，该项目将致力于开发与金属SWCNTs互连的3d结构的全SWCNTs印刷器件，这将使光电和显示应用的印刷电子器件具有完全的电路透明度。面功能密度将增加，信号延迟和功耗等功能将因此得到改善。使用单壁碳纳米管（SWCNTs）构建和互连的基于晶体管的印刷集成电路非常适合低成本，无真空，可扩展和灵活的应用，如背板显示器，射频识别标签，电子纸和一次性电子产品。该项目更广泛的影响/商业潜力是全swcnts薄膜晶体管（tft）和全透明、柔性、致密材料的电路。这些器件的创造将使背板显示器和太阳能设备、非易失性存储器、一次性电子产品和半导体制造中的产品成为可能，并将影响大量低成本消费电子产品。使用金属电极会损害电路的透明度、灵活性和机械强度。我们的全swnct器件将克服这些限制，因为不使用固体不透明材料。该项目有潜力极大地增加印刷电子行业，预计到2015年将增长到240亿美元，目前的年增长率超过30%。

This Small Business Innovation Research Phase I project aims to undertake a feasibility study of printing ultra-pure semiconducting and metallic single-walled carbon nanotube (SWCNT) inks as channel materials and electrodes of thin-film-transistors, and to fabricate all-SWCNT circuits such as inverters ( 5 V) and ring oscillators ( 1 kHz) in two-dimensional (2-D) and three-dimensional (3-D) architectures. The current trend of increasing electronic function per area, offering optical transparency, flexibility and lower cost, is driving products to be produced using printed electronics. This project will leverage existing inkjet printing technologies to implement all-SWCNT thin-film transistors and integrated circuits. To increase areal functional density and overcome interconnect parasitics, this project will aim to develop all-SWCNT printed devices in a 3-D architecture interconnected with metallic SWCNTs that will enable complete circuit transparency of the printed electronics for optoelectronic and display applications. Areal functional density will be increased, and functionalities such as signal delay and power consumption will be improved as a result. Printed integrated circuits based on transistors constructed and interconnected using single-walled carbon nanotubes (SWCNTs) are highly desirable for low cost, vacuum-less, scalable, and flexible applications such as backplane displays, radio frequency identification tags, electronic paper and disposable electronics.The broader impact/commercial potential of this project is all-SWCNT thin-film transistors (TFTs) and circuits of fully-transparent, flexible, dense materials. Creation of these devices will enable products in backplane displays and solar equipment, non-volatile memories, disposable electronics, and semiconductor manufacturing and will impact a plethora of low-cost consumer electronics products. Using metal electrodes compromises a circuit's transparency, flexibility, and mechanical strength. Our all-SWNCT devices will overcome these limitations, as no solid, opaque materials will be employed. This project has the potential to greatly augment the printed electronic industry that is expected to grow to $24 billion in 2015, with an astonishing current growth rate of over 30% per year.