Defect-Managed, High-Mobility Oxide Thin Films and Heterostructures for Fundamental Study

非技术描述：该项目专注于开发一种先进的、最先进的薄膜沉积技术，用于合成高度完美的新型复合氧化物。这些材料具有多种功能，对下一代电力电子器件和能量转换器件具有重要意义。这些具有前所未有的结构质量和低缺陷的材料的探索不仅为理论模型的实验测试提供了宝贵的输入，还有助于在降维和降维的情况下进行材料物理的基础研究。这些研究活动通过培训和“科学意识”讲习班，为当地高中、少数民族组织和社区大学的学生提供专业发展经验。技术细节：通过建立分子束外延生长方法，该项目正在研究具有突出室温电子学潜力的高化学计量比、精确掺杂、缺陷管理的复合氧化物的基础物理。该项目正在寻求通过进行详细的结构和电子传输研究来利用这些结构，以便了解并最终控制特定的缺陷、局部结构和电子流动性。特别是，这项工作正在寻求对控制钙钛矿氧化物中室温电子迁移率的因素的基本了解，这些因素使用一种“模型”材料系统(BaSnO3)，该系统提供了通过缺陷管理和远程掺杂方法来提高室温电子迁移率的机会。该项目为研究生、本科生和高中生提供了在材料科学和工程、电气工程、材料化学和材料物理等跨学科领域获得培训的机会。学生们在尖端薄膜沉积方法、先进的表征技术和理论计算方面获得了经验。该项目还通过培训在明尼阿波利斯当地社区大学注册的真空和薄膜技术项目的学生，为教育推广做出了贡献。这些学生在完成这个项目后往往会找到一份技术员的工作。

NON-TECHNICAL DESCRIPTION: This project focuses on the development of an advanced state-of-the-art thin film deposition technique for the synthesis of a new class of complex oxides that are highly perfect. These materials possess multi-functional properties that are of great interest for next generation devices of power electronics and energy conversion. The exploration of these materials with unprecedented structure quality and low defects provides valuable input for experimental testing of theoretical models, in addition to facilitating the fundamental study of materials physics at reduced size and dimensionality. The research activities contribute to the professional development experience for students from local high schools, minority organizations and community colleges through training and "science awareness" workshops. TECHNICAL DETAILS: Through the establishment of molecular beam epitaxy growth approaches, this project is studying the fundamental physics of highly stoichiometric, precisely doped, defect-managed complex oxides with outstanding potential for room temperature electronics. The project is seeking to exploit these structures by conducting detailed structural and electronic transport studies in order to understand, and eventually control, specific defects, local structure, and electronic mobility. In particular, the work is seeking a fundamental understanding of factors, which control room temperature electron mobility in perovskite oxides using a "model" material system (BaSnO3) that presents opportunities to enhance electron mobility at room temperature via defect-management and remote doping approaches. The project is providing opportunities for graduate, undergraduate and high school students to obtain training in the interdisciplinary areas of materials science and engineering, electrical engineering, materials chemistry, and materials physics. Students are gaining experience with cutting-edge thin film deposition approaches, advanced characterization techniques, and theoretical calculations. The project also contributes to the education outreach by training students enrolled in a vacuum and thin film technology program at local community colleges in Minneapolis. These students are often find employment as technicians after completing this program.