PECASE: Synthesis, Optical, and Magneto-Optical Spectroscopies of Diluted Magnetic Semiconductor Quantum Dots

PECASE：稀释磁性半导体量子点的合成、光学和磁光光谱

• 批准号: 0239325
• 负责人: Daniel Gamelin
• 金额: $ 55万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-02-15 至 2008-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0239325&HistoricalAwards=false
• 关键词: PECASE; Synthesis; Optical; Magneto; Spectroscopies

Proposal Title: PECASE: Synthesis, Optical, and Magneto-Optical Spectroscopiesof Diluted Magnetic Semiconductor Quantum DotsInstitution: University of WashingtonThis PECASE award supports research into the physical and chemical properties of nanoscale diluted magnetic semiconductors (DMSs). Efforts will focus on doped chalcogenide and oxide semiconductors recently shown to be suitable spin-injection materials in prototype spin-based light emitting diode devices and to support room-temperature ferromagnetism. The research will combine innovations in chemical preparative methodologies with physical investigations involving sophisticated spectroscopic and magnetic instrumentation, with emphasis on ligand-field electronic absorption and magnetic circular dichroism spectroscopies. These studies will allow correlations to be explored between synthesis, electronic structure, and magnetism. Fundamental research in these areas will yield new insights into the properties of nanoscale DMSs that may contribute significantly to the way such materials are made and applied technologically in the future. This multidisciplinary research will prepare participating students with advanced expertise in the areas of physical, inorganic, and materials chemistries. These research activities will be complemented by synergistic educational activities having the common theme of enhancing the opportunities for undergraduate and graduate students at the University of Washington to study materials chemistry.This PECASE award supports research into the synthesis and characterization of nanoscale diluted magnetic semiconductor (DMS) materials important to the field of spin-based electronics ("spintronics") technologies. The central objectives of the research project are (a) to synthesize high-quality nanoscale DMSs and (b) to study these materials by optical, magnetic, magnetooptical, and electrochemical methods. This research will emphasize the development of room-temperature solution methods for preparing, handling, and performing chemistry upon high-quality internally doped oxide and chalcogenide DMS nanocrystals. Exploratory research into the design and construction of prototype magnetic superstructures involving DMS nanocrystals as building blocks will also be initiated. This multidisciplinary research will prepare participating students with advanced expertise in the areas of physical, inorganic, and materials chemistries. These research activities will be complemented by synergistic educational activities having the common theme of enhancing the opportunities for undergraduate and graduate students to study materials chemistry at the University of Washington. The educational activities will involve a balanced combination of new course development, departmental program development, and regional advocacy of materials chemistry studies among academic institutions in the Pacific Northwest. This project is supported jointly by the Chemistry Division and the Division of Materials Research.This project was originally funded as a CAREER award, and was converted to a Presidential Early Career Award for Engineers and Scientists (PECASE) award in September 2004.

提案标题：PECASE：稀释磁性半导体量子点的合成、光学和磁光光谱机构：华盛顿大学该 PECASE 奖项支持对纳米级稀释磁性半导体 (DMS) 的物理和化学性质的研究。工作重点将集中于最近被证明是基于自旋的发光二极管器件原型中合适的自旋注入材料并支持室温铁磁性的掺杂硫族化物和氧化物半导体。该研究将化学制备方法的创新与涉及复杂光谱和磁性仪器的物理研究相结合，重点是配体场电子吸收和磁性圆二色光谱。这些研究将有助于探索合成、电子结构和磁性之间的相关性。这些领域的基础研究将对纳米级 DMS 的特性产生新的见解，这可能会对未来此类材料的制造和应用技术做出重大贡献。这项多学科研究将为参与的学生提供物理、无机和材料化学领域的高级专业知识。这些研究活动将得到协同教育活动的补充，其共同主题是增加华盛顿大学本科生和研究生学习材料化学的机会。该 PECASE 奖项支持对自旋电子（“自旋电子学”）技术领域非常重要的纳米级稀磁半导体（DMS）材料的合成和表征研究。该研究项目的中心目标是（a）合成高质量的纳米级 DMS 以及（b）通过光学、磁力、磁光和电化学方法研究这些材料。这项研究将重点开发用于制备、处理和在高质量内掺杂氧化物和硫族化物 DMS 纳米晶体上进行化学反应的室温溶液方法。还将启动对涉及 DMS 纳米晶体作为构建块的原型磁性上部结构的设计和构造的探索性研究。这项多学科研究将为参与的学生提供物理、无机和材料化学领域的高级专业知识。这些研究活动将得到协同教育活动的补充，其共同主题是增加本科生和研究生在华盛顿大学学习材料化学的机会。教育活动将平衡地结合新课程开发、部门项目开发以及太平洋西北地区学术机构之间材料化学研究的区域宣传。该项目由化学部和材料研究部共同支持。该项目最初作为职业奖资助，并于2004年9月转换为工程师和科学家总统早期职业奖（PECASE）奖。