Polarization induced transport in all-polymer field-effect transistors

该计划的目标是在全聚合物场效应晶体管（fet）的极化诱导输运领域进行综合研究和教育工作。本研究的目标是阐明远距离极化相互作用在铁电场效应管中的作用，结合光散射和瞬态光电流光谱研究等离子体对输运的影响，以及开发压力传感器件应变映射的实验方法。智力上的优点在于开发了包含Fröhlich极化子效应的温度相关场效应管迁移率的通用模型。研究活动包括开发具有溶液可加工极性和非极性聚合物电介质的聚合物场效应管以及一系列新的推挽型供体-受体聚合物。结合表面增强拉曼散射与光电流光谱将提供一个诊断工具，可视化传输使用表面等离子体。基于有机场效应管与铁电介质结合的柔性压力传感装置的发展可能会通过触觉电子表面的可行性对技术产生变革性影响。更广泛的影响是压力传感装置的科学和技术以及多学科的教育和推广。高中学生参加了一个新的暑期项目——实地科学——其中的喷墨打印技术项目将由本科生在高级实验课程中进一步发展，这将推动柔性电子表面领域的发展。关于柔性电子的公开讲座将由PI和参与该计划的研究生提供，作为现有的周六早间科学系列的一部分。

The objective of this program is an integrated research and educational effort in the area of polarization induced transport in all-polymer field-effect transistors (FETs). The goals of the research are to elucidate the role of long-range polaronic interaction in ferroelectric-based FETs, to study plasmonic effects on transport by combining light scattering and transient photocurrent spectroscopy, and the development of experimental methodologies for strain mapping in pressure sensing devices. The intellectual merit is in the development of a universal model for temperature-dependent FET mobility incorporating the effect of Fröhlich polarons. The research activities involve development of polymer FETs with solution processable polar and non-polar polymer dielectrics along with a new series of push-pull-type donor-acceptor polymers. Combining surface-enhanced Raman scattering with photocurrent spectroscopy will provide a diagnostic tool to visualize transport using surface plasmons. The development of flexible pressure sensing devices based on organic FETs in conjunction with ferroelectric dielectrics is likely to have a transformative impact on technology via the feasibility of tactile electronic surfaces.The broader impacts are on the science and technology of pressure sensing devices and multi-discipline education and outreach. The participation of high school students in a new summer program - Fielding Science - with projects on inkjet printing techniques to be further developed by undergraduate students in an Advanced Laboratory course, will advance the area of flexible electronic surfaces. Public lectures on flexible electronics will be delivered by the PI and graduate students participating in the program as part of an existing Saturday Morning Science series.