Frequency-domain ultrafast dynamics in II-VI semiconductor heterostructures

II-VI 族半导体异质结构中的频域超快动力学

• 批准号: 1112192
• 负责人: Anne Kelley
• 金额: $ 49.85万
• 依托单位: University of California - Merced
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-08-15 至 2015-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1112192&HistoricalAwards=false
• 关键词: Frequency; domain; ultrafast; dynamics; II

In this project funded by the Macromolecular, Supramolecular, and Nanochemistry Program of the Chemistry Division, Drs. Anne Kelley and David Kelley, from the University of California, Merced, will investigate by resonance Raman spectroscopy such effects as electronic dephasing and coupling of optical phonons to excitons, electrons, and holes in II-VI nanocrystals and heterostructures. The work will contribute to our understanding of ultrafast dynamics in semiconductor nanostructures.Knowledge of the exact ways in which electric charge migrates in nanometer-sized structures is essential for the design and implementation of new technologies that can lead to further miniaturization of devices. The work by Drs. Kelley and Kelley will reveal details of charge migration in nanometer-sized structures and inform future technological advances. Along the way, the investigators will engage graduate and undergraduate students - many from groups traditionally under-represented in science - in cutting-edge research and discovery.

在这个由化学系的大分子、超分子和纳米化学项目资助的项目中，来自默塞德的加州大学的Anne Kelley和大卫Kelley博士将通过共振拉曼光谱研究诸如电子退相和光学声子与II-VI纳米晶体和异质结构中的激子、电子和空穴的耦合等效应。这项工作将有助于我们理解半导体纳米结构中的超快动力学。电荷在纳米尺寸结构中迁移的确切方式的知识对于设计和实施可以导致器件进一步小型化的新技术至关重要。Kelley和Kelley博士的工作将揭示纳米结构中电荷迁移的细节，并为未来的技术进步提供信息。沿着，研究人员将从事研究生和本科生-许多来自传统上在科学中代表性不足的群体-在尖端的研究和发现。