Dynamic Response of Polymer Transistors and their Application in Fast Circuits

这项研究的目的是发展一系列全新的实验方法，用于研究聚合物/有机晶体管中的漂移速度(载流子在沟道中移动的速度)、漂移迁移率和陷阱分布。方法是研究晶体管中的时间分辨输运，如快脉冲测量、电脉冲响应测量，并对半波和全波整流响应进行分析，以推导出晶体管中的载流子速度。初步研究结果表明，载流子的移动速度与音速相当(约105厘米/S)，用聚合物晶体管制成的一类称为非准静态电路的电路，对于2微米的通道长度设备，可以以超过20 MHz的速度运行。这种电路被设计成在单个晶体管未完全导通的情况下运行。人们希望，通过将通道长度缩小到约100 nm，电路速度将可能达到几个100 MHz。这项提议的更广泛影响将是推动集成有机电路的发展，从而影响将有机电子产品商业化的工业努力。智力价值：从教育的角度来看，其影响将是德克萨斯大学奥斯汀分校电气工程研究生和本科生的研究型教育。这项工作还将影响两门专业课程的发展。这项研究也将有助于吸引更多的女性/少数族裔学生进入工程研究。

The objective of this research is to develop a whole new range of experimental methods that can be used to study the drift velocity (velocity at which charge carriers move in the channel), drift mobility, and trap distribution in polymer/organic transistors. The approach is to study time-resolved transport in transistors such as fast pulse measurements, electrical impulse response measurements, and performing an analysis on half-wave and full-wave rectifier response to deduce the carrier velocities in transistors. Preliminary findings indicate that carriers move at velocities that are comparable to the speed of sound ( ca. 105 cm/s), and that a particular class of circuits called non quasi-static circuits made with polymer transistors can operate at speeds in excess of 20 MHz for 2 micron channel length devices. Such circuits are designed to operate in the regime in which the individual transistors are not fully turned on. It is hoped that by scaling the channel length down to about 100 nm, circuit speeds of several 100 MHz will be possible. The broader impact of this proposal will be to advance the development of integrated organic circuitry and therefore to impact industrial efforts to commercialize organic electronics products. Intellectual Merit: From an educational perspective, the impact will be research-oriented education of both graduate and undergraduate students in Electrical Engineering at UT Austin. This work will also impact the evolution of two specialized courses. This research will also be useful in helping attract more women/minority students into engineering research.