Semiconducting Carbon Nanotube Networks for Flexible and Stretchable High-Frequency Circuits

用于柔性和可拉伸高频电路的半导体碳纳米管网络

• 批准号: 406952241
• 负责人: Professor Dr. Ullrich Scherf
• 金额: --
• 依托单位: Forschungsgruppe für Angewandte Physikalische Chemie
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2018
• 资助国家: 德国
• 起止时间: 2017-12-31 至 2023-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/406952241?language=en
• 关键词: Semiconducting; Carbon; Nanotube; Networks; Flexible

Networks or thin films of semiconducting single-walled carbon nanotubes (SWNTs) are extremely flexible and even stretchable without noticeable changes in conductivity. They are environmentally stable and durable, and can be processed from dispersions at low temperatures, which makes them suitable for printing on plastic and elastic substrates. Although the carrier mobilities in SWNT networks - limited by nanotube-nanotube junctions - are lower than in individual nanotubes, they reach more than 100 cm2/(Vs), which is sufficient for high-frequency circuits. Thus, SWNTs are the perfect choice for printable, flexible and stretchable electronics. In this project we aim to create high-frequency (10-50 MHz), low voltage, complementary circuits on flexible and stretchable substrates based on networks of polymer-sorted semiconducting carbon nanotubes and ultrathin gate dielectrics. We will design and synthesize new conjugated polymers that enable highly selective dispersion of only semiconducting SWNTs and simple processing of purified SWNT inks (e.g. by aerosol-jet printing or spray-coating) but can also be easily removed by depolymerization after SWNT deposition for maximized carrier mobilities. The obtained SWNT networks will be integrated in n- and p-doped field-effect transistors with dielectrics based on self-assembled monolayers with ultrahigh capacitances on flexible substrates and integrated in complementary circuits for high frequency wireless applications.

半导体单壁碳纳米管（SWNT）的网络或薄膜非常灵活，甚至可以拉伸，而不会发生明显的导电性变化。它们具有环境稳定性和耐用性，并且可以在低温下从分散体中加工，这使得它们适合在塑料和弹性基材上印刷。虽然单壁碳纳米管网络中的载流子迁移率-受纳米管-纳米管结的限制-低于单个纳米管，但它们达到超过100 cm 2/（Vs），这足以用于高频电路。因此，单壁碳纳米管是可印刷、柔性和可拉伸电子产品的理想选择。在这个项目中，我们的目标是创建高频（10-50 MHz），低电压，互补电路的柔性和可拉伸基板的基础上聚合物分类的半导体碳纳米管和半导体栅的网络。我们将设计和合成新的共轭聚合物，使只有半导体单壁碳纳米管和纯化的单壁碳纳米管油墨的简单处理（例如，通过气溶胶喷射印刷或喷涂）的高度选择性分散，但也可以很容易地通过单壁碳纳米管沉积后的解聚最大化的载体迁移率。所获得的单壁碳纳米管网络将被集成在n-和p-掺杂场效应晶体管的基础上的自组装单分子层与柔性基板上的电容和高频无线应用集成在互补电路中。