Fundamentals and Applications of Organic Interfaces

技术：该项目涉及控制有机界面的电子结构和电掺杂的基本机制，以及这些机制被环境因素修改或抑制的程度。该项目强调一种全面的方法，以自洽的方式将电子结构数据和理论、界面化学和电荷载流子传输数据结合在一起。使用低电离能分子作为快速扩散碱金属替代品的N型电掺杂将被包括在研究中。此外，还将研究几类分子，如钴烯和衍生物，以及新的递送方法。晶体层的掺杂(n型和p型)也将通过扫描探针技术在分子水平上进行研究。该项目涉及多种技术(紫外线和X射线光电子能谱、反向光电子能谱、扫描隧道显微镜和光谱学、电流和电容-电压测量)，以全面表征界面的电子、化学和电荷传输特性。与化学家、设备物理学家和理论家建立了合作关系。非技术性：该项目涉及具有高度技术相关性的电子/光子学材料科学的基础研究问题，预计将为学生培训提供重要机会。它将通过化学和电子结构理论的合作，使研究生和本科生接触到一系列基本的界面科学问题以及一些实用的器件问题，接触到各种实验技术，并接触到不同的研究环境。通过参加普林斯顿大学的外展项目、向工业界提供的短期课程以及参与科学协会，PI将继续积极地教授和传播有机电子领域的知识。

Technical: This project addresses fundamental mechanisms that control the electronic structure of organic interfaces and electrical doping, and the extent to which these mechanisms are modified or inhibited by environmental factors. The project emphasizes a comprehensive approach, bringing together electronic structure data and theory, interface chemistry and charge carrier transport data in a self-consistent fashion. N-type electrical doping using low ionization energy molecules as alternatives to fast diffusing alkali metals will be included in the study. Additionally, several classes of molecules, such as cobaltocenes and derivatives, and new delivery methods will be investigated. Doping (both n- and p-type) of crystalline layers will also be investigated at the molecular level via scanning probe techniques. This project involves a multi-technique (ultra-violet and X-ray photoemission spectroscopy, inverse photoemission spectroscopy, scanning tunneling microscopy and spectroscopy, current- and capacitance-voltage measurements) approach to fully characterize electronic, chemical and charge transport properties of interfaces. Collaborations with chemists, device physicists and theoreticians are established. Non-technical: The project addresses basic research issues in electronics/photonics materials science with high technological relevance, and is expected to provide important opportunities for student training. It will expose graduate and undergraduate students to a range of fundamental interface science problems as well as some practical device issues, to a variety of experimental techniques, and to different research environments through collaborations in chemistry and theory of electronic structure. Through his participation in outreach programs at Princeton University, short courses given to industry, and involvement in scientific societies, the PI will remain active in the teaching and dissemination of knowledge in the field of organic electronics.