Opto/electronic studies and applications of nano-engineered 2-dimensional materials

纳米工程二维材料的光电研究与应用

• 批准号: RGPIN-2020-06244
• 负责人: Dhirani, AlAmin
• 金额: $ 1.75万
• 依托单位: University of Toronto
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2021
• 资助国家: 加拿大
• 起止时间: 2021-01-01 至 2022-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=741114
• 关键词: Opto; electronic; studies; applications; nano

A wide variety of nanostructures can be chemically synthesized with great control over size, shape and chemical composition. A long term goal of the applicant's research program has been to use nanostructures as building-blocks to fashion materials that exhibit exotic quantum "correlated" electronic behavior; ie. electrons move through confined spaces (atomic d-orbitals) which cause electrons to avoid each other. Such motion lies at the heart of a variety of widely studied quantum phenomena, such as high temperature superconductivity for example. In the last funding cycle, the applicant's group demonstrated that this is indeed possible by demonstrating for the first time a strongly correlated phenomena called a Kondo effect using disordered films of gold nanoparticles and organic molecular linkers. The group also developed a new method for fabricating, for the first time, so-called 2-d cross-linked nanoparticle superlattices: highly ordered, dense films of gold nanoparticles + molecular linker that are macroscopic in area and one nanoparticle thick. One currently proposed project is to study the electrical and optical properties of these new materials, including those that incorporate organometallic molecular cross-linkers with d-orbitals for charges to traverse. A second proposed project is use electrochemistry to change the density of available d-orbitals. In the last funding cycle, the applicant's group also developed, for the first time, a solution-based method for inexpensively fabricating large quantities of monolayers of MoS2 that photoluminesce more strongly than ever before. A third project of the current proposal is to use these new nanostructures as building-blocks for next generation devices such as solar cells and photodetectors. Nanoengineering materials that exhibit strongly correlated electronic motion has a potential to improve our understanding of a range of intensely studied exotic quantum electronic phenomena. This would be a dramatic scientific outcome indeed. It also leads to technical achievements. In the last funding cycle, know-how developed led to improved commercially available conductivity meters for testing water. In the next funding cycle, the applicant's group will explore the materials developed for improved sensors for detecting specific molecules (such as biomolecules using surface plasmon resonance) and fingerprinting molecules (using Raman spectroscopy). Another important outcome is that this research has and will continue to provide excellent, interdisciplinary training. Student (including undergrad) achievements include publishing papers, attending conferences to present their work, developing a teaching lab, awards, launching a product and quickly finding jobs applying their training.

可以通过对大小，形状和化学组成的强大控制来化学合成多种纳米结构。申请人研究计划的长期目标是将纳米结构用作构建块的时尚材料，以表现出异国情调的量子“相关”电子行为； IE。电子穿过狭窄的空间（原子D-轨道），这会导致电子相互避免。这种运动位于许多广泛研究的量子现象的核心，例如高温超导性。在最后一个融资周期中，申请人的群体证明了这确实是可以通过首次使用金纳米颗粒和有机分子接头的无序膜的强烈相关现象来证明这是可能的。该小组还开发了一种新的方法，该方法首次制造了所谓的二-D交联纳米颗粒超晶格：高度有序的金纳米颗粒 +分子接头的高度密集的膜，它们在区域和一个纳米粒子厚度为宏观。目前提出的一个项目是研究这些新材料的电气和光学特性，包括那些融合了有机金属分子交联的材料，该材料具有D-轨道，以遍历D-轨道。提出的第二个项目是使用电化学来改变可用的D轨道的密度。在最后一个融资周期中，申请人组也首次开发了一种基于解决方案的方法，用于廉价地制造大量的MOS2单层，该方法比以往任何时候都更加强烈。当前建议的第三个项目是将这些新的纳米结构用作下一代设备（例如太阳能电池和光电探测器）的建筑块。表现出密切相关的电子运动的纳米工程材料具有提高我们对一系列经过深入研究的外来量子电子现象的理解的潜力。这确实是一个戏剧性的科学结果。这也导致技术成就。在最后一个资金周期中，专有技术的发展导致改善了测试水的市售电导率计。在下一个融资周期中，申请人组将探索用于改进传感器开发的材料，以检测特定分子（例如使用表面等离子体共振的生物分子）和指纹分子（使用拉曼光谱法）。另一个重要的结果是，这项研究已经并且将继续提供出色的跨学科培训。学生（包括本科生）的成就包括出版论文，参加会议来展示其作品，开发教学实验室，奖励，推出产品并迅速找到应用培训的工作。