Polarization induced transport in all-polymer field-effect transistors

该计划的目标是在全聚合场效应晶体管(FET)中极化诱导输运领域的综合研究和教育努力。这项研究的目的是阐明长程极化子相互作用在铁电FET中的作用，通过结合光散射和瞬时光电流光谱来研究等离子体对输运的影响，以及发展压力传感器件中应变映射的实验方法。智能的优点在于开发了一个包含Fröhlich极化子效应的与温度相关的FET迁移率的通用模型。研究活动包括开发具有溶液可加工的极性和非极性聚合物介质的聚合物FET，以及一系列新的推拉型施主-受主聚合物。将表面增强拉曼散射与光电流光谱相结合，将提供一种利用表面等离子体来可视化输运的诊断工具。基于有机场效应管和铁电介质的柔性压力传感器件的发展，可能会通过触觉电子表面的可行性对技术产生革命性的影响，对压力传感器件的科学和技术以及多学科的教育和推广产生更广泛的影响。高中生参加了一个新的暑期项目--Fiding Science--本科生将在高级实验室课程中进一步开发喷墨打印技术项目，这将推动柔性电子表面领域的发展。参与该项目的PI和研究生将发表关于柔性电子产品的公开讲座，这是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.