Intermediate-gap Colloidal Doped Quantum Dots

本研究旨在开发新的胶体稀释磁性半导体量子点和量子点异质结构，用于基于自旋的电子或光子学技术的基础研究和潜在应用。合成、分析和光谱技术将被整合，以优化新的物理现象，并为这类新兴材料发展基本的结构/功能关系。具体的研究目标包括：(i)开发和研究制备高质量掺杂无机硫族化物纳米结构的新合成路线；（ii）结合质谱和其他分析技术，应用掺杂特异性光谱探针进行详细的合成研究；（iii）应用一系列先进的光谱和磁谱技术描述掺杂量子点电子结构；（iv）开发本研究将化学制备方法的创新与复杂的光学和磁光测量相结合，以了解和利用与基于自旋的信息处理技术相关的新型磁性半导体纳米结构的物理特性。除了产生新的基础科学见解和新材料外，这项研究还将为本科生和研究生提供在技术重要领域接受高级跨学科教育和培训的机会，为他们未来在科学和工程领域的职业生涯做好准备。学生将参加威斯康星大学跨学科纳米技术博士课程，通过用户设施获得宝贵的国家实验室经验，并将获得与巴西、德国、印度、荷兰、加拿大、西班牙、大韩民国和瑞士等地对这些材料应用感兴趣的科学家和工程师的国际合作的宝贵经验。重点将放在通过本科生积极参与研究，将实验和研究概念纳入西澳大学本科实验课程，以及与全国本科院校的教师和学生合作，将研究和教育整合到本科水平。

TECHNICAL SUMMARYThis research seeks to develop new colloidal diluted magnetic semiconductor quantum dots and quantum dot heterostructures for fundamental research and potential application in spin-based electronics or photonics technologies. Synthetic, analytical, and spectroscopic techniques will be integrated to optimize new physical phenomena and develop fundamental structure/function relationships for this emerging class of materials. Specific research objectives include:(i) development and investigation of new synthetic routes for preparing high-quality doped inorganic chalcogenide nanostructures(ii) detailed investigation of syntheses by application of dopant-specific spectroscopic probes in combination with mass spectrometry and other analytical techniques(iii) description of doped quantum dot electronic structures by application of an array of advanced spectroscopic and magneto-spectroscopic techniques(iv) development and demonstration of new structural motifs for spin manipulation in semiconductor nanocrystalsNON-TECHNICAL SUMMARYThis research will combine innovations in chemical preparative methodologies with sophisticated optical and magneto-optical measurements in order to understand and harness the physical properties of new magnetic semiconductor nanostructures relevant to spin-based information processing technologies. In addition to yielding new fundamental scientific insights and new materials, this research will also provide undergraduate and graduate students with opportunities for advanced interdisciplinary education and training in technologically important areas in order to prepare them for future careers in science and engineering. Students will participate in UW's interdisciplinary Nanotechnology PhD program, will gain valuable exposure to our national laboratories through user facilities, and will gain valuable experience with international collaborations involving scientists and engineers interested in applications of these materials in locations as diverse as Brazil, Germany, India, the Netherlands, Canada, Spain, the Republic of Korea, and Switzerland. Emphasis will be placed on integration of research and education at the undergraduate level through aggressive involvement of undergraduates in the research, incorporation of experiments and concepts from the research into the UW undergraduate laboratory curriculum, and collaboration with faculty and students from undergraduate institutions across the country.