EAGER: A New Approach to Synthesizing Inorganic-Organic Interfaces

该项目由固态和材料化学计划支持，旨在提供一种合成和设计功能稳定的无机-有机界面的新方法，用于广泛的应用，如选择性，高灵敏度的化学和生物传感器以及高效的光子收集平台。将分子覆盖层附着到半导体上的传统合成方法对无机载体的修改最小，除了1)去除任何表面氧化物存在的预附着，以及2)如果需要，附加适当的分子连接基团。因此，设备开发的一个关键要求是创建一个高密度的保护层，以阻止界面的再氧化。该项目的目标是证明使用氧化物作为化学模板的可行性，通过抑制或增强不同的化学反应途径来影响分子的附着。这种方法将用于最终创建一个稳定的、功能性的界面。这项工作的重点是确定控制半胱胺和琥珀酸附着在III-V型半导体InAs上的关键化学反应，目标是向NSF提出后续以应用为重点的材料/器件提案。无机-有机界面是新一代电子和光子器件的核心。该研究项目旨在为能源和传感应用中使用的设备设计更稳定、性能更高的接口。这项工作的核心是设计氧化物界面材料，控制分子附着在器件表面，从而产生新的性能体系和更高的可靠性。该项目结合了化学、材料科学和工程等关键学科，因此，学生将从跨越这些界限的工作经验中获得可观的教育收益。该项目由杜克大学电气与计算机工程系生物医学工程系April Brown教授和意大利CNR-Bari的Maria Losurdo博士合作完成。杜克大学和北北大学在这一多学科努力中的学生交流也为他们的教育提供了显著的提高。

TECHNICAL SUMMARYThis project, supported by the Solid State and Materials Chemistry Program, aims to provide a new means of synthesizing and designing functional and stable inorganic-organic interfaces for exploitation across a wide range of applications, such as selective, high-sensitivity chemical and biological sensors and efficient photon harvesting platforms. The traditional synthesis approach for attaching molecular overlayers to semiconductors creates minimal modifications to the inorganic support except to 1) remove any surface oxide present pre-attachment, and 2) attach appropriate molecular linking groups, if needed. A key requirement for device exploitation is therefore the creation of a highly - dense overlayer that impedes re-oxidation of the interface. The goal of this project is to demonstrate the feasibility of using oxides designed as chemical templates that impact molecular attachment by inhibiting or enhancing different chemical reaction pathways. This approach will be used to ultimately create a stable, functional interface. An emphasis on determining the key chemical reactions governing cysteamine and succinic acid attachment to InAs, a model III-V semiconductor, is the focus of this effort with the goal of developing a follow-on application-focused materials/device proposal to NSF.NON-TECHNICAL SUMMARYInorganic-organic interfaces are the heart of a new generation of electronic and photonic devices. This research project aims to create more stable and higher performance interfaces designed for devices used in energy and sensing applications. The core of the effort is to design oxide interface materials that control the attachment of molecules to device surfaces yielding new performance regimes and higher reliability. The project marries the critical disciplines of chemistry, materials science, and engineering and, as such, students will derive considerable educational benefit from the experience gained working across these boundaries. This project involves collaboration between Prof. April Brown, Duke University, Dept. of Electrical and Computer Engineering, Dept. of Biomedical Engineering, and Dr. Maria Losurdo, CNR-Bari, Italy. The exchange of students between Duke and CNR in this multidiscipline effort also provides significant enhancements to their education.