CAREER: Creating Confined-but-Coupled Nanostructures to Balance Quantum Confinement and Quantum Coupling

职业：创建受限但耦合的纳米结构以平衡量子限制和量子耦合

• 批准号: 1056943
• 负责人: Tobias Hanrath
• 金额: $ 46.34万
• 依托单位: Cornell University
• 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: 2011-02-01 至 2017-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1056943&HistoricalAwards=false
• 关键词: CAREER; Creating; Confined; but; Coupled

This CAREER award is jointly funded by the Electronic and Photonic Materials Program (EPM) and the Solid State and Materials Chemistry Program (SSMC), both in the Division of Materials Research.Technical: The research component of this CAREER award is to study semiconductor nanostructures with controlled connections in multiple dimensions that balance quantum confinement and quantum coupling. The conceptual framework underlying the research project is based on analogies between atomic crystals and nanocrystal assemblies as artificial solids. The research builds on recent advances in independent controls of the energy level of the artificial atom (nanocrystal), the quantum coupling across the artificial bond (molecular linker), and the symmetry of the artificial crystal (superlattice). The project aims to significantly advance knowledge and understanding of tunable extended electronic states in coupled nanocrystal assemblies. It studies pressure tuning of inter-nanocrystal separation, formation of permanent artificial bonds between nanostructures, and processing-structure-property relationships of semiconductor nanostructures. The overall objectives of the research are to: (1) map the electronic phase diagram of confined-but-connected semiconductor nanostructures with precise experimental control over the disorder and coupling of the system; (2) apply the understanding of correlated properties in the creation of artificial solids with electronic and optical properties by design, and (3) transform the fundamental understanding into a technological reality by developing and testing prototype photovoltaic test structures.Non-technical: The project addresses basic research issues in a topical area of materials science with high technological relevance. The nanostructured semiconductor materials studied in this project have potential applications in next-generation energy technologies. The educational activities of this CAREER project are designed to: (1) integrate results from the research frontier and education of students ranging from high school, to undergraduate courses and projects, and to graduate school, and (2) capture the enthusiasm and engagement of students in impending energy issues, encouraging their future contributions as the next generation of scientist and engineers.

该职业奖由材料研究部的电子和光子材料计划 (EPM) 以及固态和材料化学计划 (SSMC) 联合资助。技术：该职业奖的研究部分是研究在多个维度上具有受控连接的半导体纳米结构，以平衡量子限制和量子耦合。该研究项目的概念框架基于原子晶体和纳米晶体组件作为人造固体之间的类比。该研究建立在人造原子（纳米晶体）能级独立控制、人造键（分子连接体）上的量子耦合以及人造晶体（超晶格）对称性方面的最新进展的基础上。该项目旨在显着增进对耦合纳米晶体组件中可调谐扩展电子态的认识和理解。它研究纳米晶体间分离的压力调节、纳米结构之间永久人工键的形成以及半导体纳米结构的加工-结构-性能关系。研究的总体目标是：（1）通过对系统无序和耦合的精确实验控制，绘制受限但连接的半导体纳米结构的电子相图； (2) 将相关特性的理解应用于通过设计创建具有电子和光学特性的人造固体，以及 (3) 通过开发和测试原型光伏测试结构，将基本理解转化为技术现实。 非技术性：该项目解决具有高技术相关性的材料科学主题领域的基础研究问题。该项目研究的纳米结构半导体材料在下一代能源技术中具有潜在的应用。该职业项目的教育活动旨在：(1) 整合从高中到本科课程和项目，再到研究生院的研究前沿和学生教育的成果，(2) 激发学生对迫在眉睫的能源问题的热情和参与，鼓励他们作为下一代科学家和工程师做出未来的贡献。