基于一维半导体的可编织线状场效应晶体管研究

项目名称： 基于一维半导体的可编织线状场效应晶体管研究

项目编号： No.61504062

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 无线电电子学、电信技术

项目作者： 李谊

作者单位： 南京邮电大学

项目金额： 20万元

中文摘要： 具有开关、放大功能的线状晶体管是实现可编织柔性电子器件的关键。但在高曲率线状衬底上加工半导体活性材料具有较大挑战，是线状晶体管研制中的核心问题。将一维半导体（如有机纳米线、单壁碳纳米管等）有序组装在纱线、金属丝等纤维表面制成半导体纤维将开辟一条全新的线状晶体管研制途径。本项目拟采用自主研发的“限域蒸发诱导自组装”技术，将一维半导体组装在纤维表面，制成半导体纤维，进而构建线状晶体管。通过揭示一维半导体的分散液性质（浓度和表面张力等）、纤维衬底的物性（曲率和浸润性等）以及制备条件（涂覆速度和蒸发温度等）对组装效果（如均匀性和有序性）的影响规律，实现半导体纤维成分、结构和性能的有效调控。在此基础上，构筑线状晶体管，研究半导体纤维结构、器件界面性质与器件性能之间的关系，阐明线状晶体管中载流子的传输机制，开发可编织p-n异质结器件和逻辑电路，推进线状晶体管器件的研究。

中文关键词： 线状场效应晶体管；一维半导体；半导体纤维；导电纤维；可编织

英文摘要： Fiber transistors with the functions of switching and amplification are the most important electrical building blocks for weavable and flexible electronics. The active materials, however, are difficult to be directly deposited on fibers due to the high curvature of such cylindrical-topology substrates, which is the key problem for the development of fiber transistors. It is expected that assembling one-dimensional semiconductors，such as organic nanowires and single-walled carbon nanotubes, on the substrates of fibers (like yarns and metal wires) in alignment will open up a new route for engineering fiber transistors. In this proposal, using the independently-developed confinement- and evaporation-induced self-assembly technology, we devote to prepare semiconductive fibers by assembling one-dimensional semiconductors onto the fiber surfaces as well as apply them to fabricate fiber transistors. We will study the effect of the dispersion properties of one-dimensional semiconductors (concentration, surface tension and etc.), fiber-substrate physical properties (curvature, wettability and etc.) and preparation conditions (coating speed, evaporation temperature and etc.) on the assembling quality such as uniformity and alignment, and then develop an effective process to regulate and control the compositions, structures and performance of the target semiconductive fibers. Based on these progresses, fiber transistors will be fabricated and the involved correlations among the structures of semiconductive layers, properties of interfaces, performance of the fiber transistors will be clarified. Then the charge transfer mechanism belonging to fiber transistors will be addressed. In addition, we will further develop weavable p-n heterojunction devices and logic circuit based on the fiber transistors. In general, the reaserches in this project will promote the development of the fiber transistors.

英文关键词： fiber field-effect transistors;one-dimensional semiconductors;semiconductive fibers;conductive fibers;weaveble