权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Transport through organic and inorganic interfaces with high resolution: Multiple-scattering description of electron transport

高分辨率有机和无机界面的传输：电子传输的多重散射描述

基本信息

批准号：
EP/E062490/1
负责人：
Werner Hofer
金额：
$ 48.63万
依托单位：
University of Liverpool
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2007
资助国家：
英国
起止时间：
2007 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=EP%2FE062490%2F1
关键词：
Transport through organic inorganic interfaces

项目摘要

The project is designed to remove an important limitation in the theoretical description of experiments with scanning tunnelling microscopes. While theory today describes the transport through a vacuum barrier with high precision, it does not take into account the bias dependent transport through an organic or inorganic interface. Transport through such an interface is of prime importance for applications in molecular electronics and organic light emitting devices. We want to understand, on a fundamental level, how these processes can be influenced by changing molecular conformations, molecular attachment, or doping of substrate material.Measuring transport properties through interfaces can be done with high resolution / sub Angstrom / only with scanning probe microscopes. Experimentally, the method is well established. However, it has been show quite frequently in the past that simple explanations of the observed data are usually incorrect or at least incomplete. In this case a higher level of understanding makes it necessary to develop sophisticated theoretical models, which are suitable to account for the whole parameter space in the experiments.It is an important finding that theoretical models in nanoscience not only reproduce experimental results, but substantially extend our understanding and thus make it possible to optimize the systems under consideration. In this respect, the inability to account for electron transport through organic interfaces is a severe restriction. We expect that high level theoretical models and high-resolution experiments in this field will provide a host of qualitatively new and important research results. We also expect that this project will provide a firm basis for optimizing molecular interfaces at the level of single atoms and molecules.The project is thus highly timely, and it also has a firm basis in the world-leading expertise of the Liverpool group in the field of quantum transport. A clear indication of the importance of the project is the number of external collaborators, supporting this project. In this respect, it will provide continuity to three existing and very successful collaborations, and initiate collaborative projects with two more groups.

该项目旨在消除扫描隧道显微镜实验理论描述中的一个重要限制。虽然目前的理论描述了通过真空势垒的高精度输运，但它没有考虑到通过有机或无机界面的偏倚相关输运。通过这种界面的传输对于分子电子学和有机发光器件的应用至关重要。我们想了解，在一个基本的水平上，这些过程是如何受到改变分子构象、分子附着或衬底材料掺杂的影响的。通过界面的输运性质测量可以用高分辨率/亚埃/扫描探针显微镜完成。实验证明，该方法是行之有效的。然而，过去已经多次表明，对观测数据的简单解释通常是不正确的，或者至少是不完整的。在这种情况下，更高层次的理解使得有必要发展复杂的理论模型，这些模型适用于解释实验中的整个参数空间。这是一个重要的发现，纳米科学中的理论模型不仅再现了实验结果，而且极大地扩展了我们的理解，从而使优化所考虑的系统成为可能。在这方面，不能解释通过有机界面的电子传递是一个严重的限制。我们期待在这一领域的高水平理论模型和高分辨率实验将提供大量质的新的和重要的研究成果。我们也期望该项目将为在单原子和分子水平上优化分子界面提供坚实的基础。因此，该项目非常及时，并且它也具有利物浦集团在量子输运领域世界领先的专业知识的坚实基础。项目重要性的一个明确标志是支持这个项目的外部合作者的数量。在这方面，它将继续现有的三个非常成功的合作，并与另外两个小组开展合作项目。