Electric Field Effect in Layered Inorganic and Organic Semiconductors

这个凝聚态物理项目将探索有机和无机层状半导体表面的电荷传输。其目的是开发基于这些材料的单晶制造场效应结构的新技术。重点是探索有机半导体的本征电子性质(不受结构无序的限制)、分子堆积对载流子迁移率大小和各向异性的影响、有机半导体中持久光导的机制以及基于过渡金属二卤化物的双极场效应晶体管的发光实现。这项研究将有助于更好地了解各种有机和无机半导体的极化子输运以及电子和光学性质。人们感兴趣的是有机晶体管性能的极限，以及寻找具有更高载流子迁移率的新材料。拟议研究的实施促进了本科生和研究生的培训：学生将广泛接触现代固态和半导体研究的最先进工具，以及尖端物理研究。这项研究的成果将被应用于一门新的本科课程“纳米结构中的电子过程”，这是罗格斯大学努力开发纳米科学和纳米技术新课程的重要组成部分。该项目的目标是探索有机和无机层状半导体表面的电荷传输，这是新兴的“柔性”电子学领域的基本构件。该项目利用了罗格斯大学在之前NSF的支持下开发的制造单晶场效应晶体管的新技术。重点是探索有机半导体的本征电子性质(不受结构缺陷的限制)、分子堆积对载流子迁移率的大小和各向异性的影响、有机半导体中持久光导的机制以及基于层状无机半导体的场效应器件中发光的实现。这项研究将有助于更好地了解各种有机和无机半导体的电子和光学性质。它将阐明有机晶体管性能的极限，并有助于寻找具有更高载流子迁移率的新材料。拟议研究的实施促进了本科生和研究生的培训。这些学生接触到现代固态和半导体研究的最先进工具，并可以在学术或工业环境中追求职业生涯。这项研究的结果将用于一门新的本科课程“纳米结构中的电子过程”，这是罗格斯大学努力开发纳米科学和纳米技术新课程的重要组成部分。

This condensed matter physics project will explore charge transport on the surface of organic and inorganic layered semiconductors. The objective is to develop novel techniques for fabrication of field-effect structures based on single crystals of these materials. The focus is on exploration of the intrinsic (not limited by the structural disorder) electronic properties, effects of the molecular packing on the magnitude and anisotropy of the charge carrier mobility, the mechanism of persistent photoconductivity in organic semiconductors, and realization of light emission in the ambipolar field-effect transistors based on transition metal dichalcogenides. The research will contribute to better understanding of the polaronic transport and electronic and optical properties of a wide range of organic and inorganic semiconductors. Of interest are the ultimate limits of the organic transistor performance and the search for novel materials with a higher mobility of charge carriers. Implementation of the proposed research fosters training of both undergraduate and graduate students: The students will enjoy broad exposure to the state-of-the-art tools of modern solid state and semiconductor research, and the cutting-edge physics research. The results of this research will be used in a new undergraduate course "Electronic Processes in Nanostructures", an essential part of the Rutgers efforts to develop a novel curriculum on nanoscience and nanotechnology.The goal of this project is to explore the charge transport on the surface of organic and inorganic layered semiconductors, the fundamental building blocks of the emerging field of "flexible" electronics. The project takes advantage of the novel techniques for fabrication of the single crystal field-effect transistors, developed at Rutgers University under prior NSF support. The focus is on exploration of the intrinsic (not limited by the structural defects) electronic properties, the effects of molecular packing on the magnitude and anisotropy of the charge carrier mobility, the mechanism of persistent photoconductivity in organic semiconductors, and realization of light emission in the field-effect devices based on layered inorganic semiconductors. The research will contribute to better understanding of electronic and optical properties of a wide range of organic and inorganic semiconductors. It will elucidate the ultimate limits of the organic transistor performance and facilitate the search for novel materials with a higher mobility of charge carriers. Implementation of the proposed research fosters training of both undergraduate and graduate students. The students are exposed to the state-of-the-art tools of modern solid state and semiconductor research, and can pursue careers in either academic or industrial environment. The results of this research will be used in a new undergraduate course "Electronic Processes in Nanostructures", an essential part of the Rutgers efforts to develop a novel curriculum on nanoscience and nanotechnology.