International Research Fellowship Program: Charge Transport Processes in Novel High Quality Organic Molecular Crystals

[107376]国际研究员奖励计划使美国科学家和工程师能够到国外进行3至24个月的研究。该计划的奖励为联合研究提供了机会，并利用独特或互补的设施、专业知识和国外的实验条件。该奖项将支持Hugh W. Hillhouse博士与荷兰代尔夫特理工大学的Teun M. Klapwijk博士一起进行为期六个月的博士后研究。该项目将研究可用于半导体和超导体开发的有机基材料。近年来，有机分子晶体的合成有了重大突破。这导致高质量的晶体是绝缘的，但可以转换为半导体，金属，或超导状态，只需转动一个旋钮。这种独特的性质为实验人员研究固态的基本物理提供了额外的自由度。然而，人们对这些晶体的合成仍然知之甚少。这个项目的目的是首先研究这些晶体的生长，特别强调结构顺序、缺陷和纯度与所测电子结构的关系。然后，这些晶体将被用作模型系统，用于研究电荷传输的基本原理、金属-绝缘体转变的性质以及超导性的起源。Klapwijk是有机材料超导、纳米现象和电荷输运方面的专家。他还与飞利浦研究实验室建立了紧密的合作关系，该实验室正在积极开发基于有机晶体管的电子设备。

0107376HillhouseThe International Research Fellow Awards Program enables U.S. scientists and engineers to conduct three to twenty-four months of research abroad. The program's awards provide opportunities for joint research, and the use of unique or complementary facilities, expertise and experimental conditions abroad.This award will support a six month postdoctoral research fellowship by Dr. Hugh W. Hillhouse to work with Dr. Teun M. Klapwijk at Delft University of Technology in the Netherlands.This project will study organic based materials that can be used in the development of semiconductors and superconductors. Recently there was an important breakthrough in the synthesis of organic molecular crystals. This resulted in high quality crystals that are insulating, but may be converted to a semiconductor, metallic, or superconducting state by simply turning a knob. This unique property provides experimenters with an extra degree of freedom to study the fundamental physics of the solid state. However, still little is known about the synthesis of these crystals. The objective of this project is to first study the growth of these crystals with particular emphasis on correlating structural order, defects, and purity to the measured electronic structure. The crystals will then be used as model systems to study the fundamentals of charge transport, the nature of the metal-insulator transition, and the origin of superconductivity.Dr. Klapwijk is an expert on superconductivity, nanoscopic phenomena, and charge transport in organic materials. He also has strong collaborative ties to Philips Research Laboratories where there is an active program to develop electronic devices based on organic transistors.