Optical and electronic properties of nanowires and quantum dots structures/Propriétés optique et électroniques de nanofils et structures à boîtes quantiques

纳米线和量子点结构的光学和电子特性/Propriétés optique et électroniques de nanofils et Structures à boétes quantiques

• 批准号: 155452-2011
• 负责人: Morris, Denis
• 金额: $ 1.09万
• 依托单位: Université de Sherbrooke
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=569469
• 关键词: Optical; electronic; properties; nanowires; quantum

Recent advances in the fabrication of solid-state nanowires (NWs) and quantum dots (QDs) structures open interesting avenues for photovoltaic and quantum computation applications. For instance, enhanced light to electricity conversion efficiency is expected through the insertion of QDs in the middle part of a multi-junction solar cell structure, or by using a radial P-N junction geometry for NWs-based cells. For quantum cryptography and quantum computation applications, QDs can be used as the active material of non-classical sources of photons as well as spin qubits-based logic gates. Nanostructures can be produced using state-of-the art crystal growth techniques, and then integrated into useful devices using micro- and nanofabrication processes. Optimization of the growth conditions, post-growth treatments, and fabrication processes is still necessary to control nanostructures and their layer device surrounding structural properties. Better understanding the physics of these advanced devices requires knowing precisely the influences of material and structural properties on spin relaxation, exciton states, and carrier recombination and transport mechanisms. Progresses in the field of nanotechnologies are largely attributable to group efforts involving various capabilities in designing, fabricating and characterizing nanostructure-based materials and devices. Through important research collaborations, I now have the opportunity to contribute to forefront ambitious projects in this field. I am offering specialized expertise in spectroscopy and ultrafast laser technologies to support such research activities. Recent advanced technologies are now offering a diversity of characterization tools for investigating fundamental properties of nanostructures. The main objectives of my research program are: 1) to better investigate their material- and device- characteristics through a combination of techniques that utilize either visible, near-infrared or terahertz probes and 2) to use these results for guiding realization of innovative nanostructures-based solar cell and quantum computing devices.

制造固态纳米线（NWS）和量子点（QD）结构的最新进展开放了有趣的光伏和量子计算应用程序。例如，通过插入QD在多开关太阳能电池结构的中间，或通过对基于NWS的基于NWS的细胞使用径向P-N连接几何形状，可以预期增强的光转换效率。对于量子加密和量子计算应用，QD可以用作光子非经典源的活性材料以及基于自旋的逻辑门。 可以使用最先进的晶体生长技术生产纳米结构，然后使用微型和纳米制作过程集成到有用的设备中。对于控制纳米结构及其围绕结构特性的层设备，仍然需要优化生长条件，生长后处理和制造过程。更好地了解这些高级设备的物理学需要精确了解材料和结构特性对自旋松弛，激子状态以及载体重组和运输机制的影响。 在纳米技术领域的进步主要归因于涉及各种功能在设计，制造和表征基于纳米结构的材料和设备方面的努力。通过重要的研究合作，我现在有机会为该领域的最前沿雄心勃勃的项目做出贡献。我提供光谱和超快激光技术方面的专业知识，以支持此类研究活动。最近的先进技术现在提供了多种表征工具来研究纳米结构的基本属性。我的研究计划的主要目标是：1）通过使用可见，近红外或Terahertz探针的技术组合更好地研究其材料和设备特性，以及2）使用这些结果来指导基于纳米结构的创新基于纳米结构的太阳能电池和量子计算设备。