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.

可以化学合成多种纳米结构，并且可以很好地控制尺寸、形状和化学成分。申请人研究计划的长期目标是使用纳米结构作为构建块来塑造表现出奇特的量子“相关”电子行为的材料； IE。电子穿过有限空间（原子 d 轨道），这会导致电子相互避开。这种运动是各种广泛研究的量子现象的核心，例如高温超导。在上一个资助周期中，申请人的团队通过使用金纳米粒子和有机分子连接体的无序薄膜首次证明了一种称为“近藤效应”的强相关现象，证明了这确实是可能的。该小组还首次开发了一种制造所谓的二维交联纳米粒子超晶格的新方法：高度有序、致密的金纳米粒子+分子连接体薄膜，其面积宏观，厚度为一个纳米粒子。目前提出的一个项目是研究这些新材料的电学和光学性质，包括那些将有机金属分子交联剂与电荷穿越的 d 轨道结合在一起的材料。第二个提议的项目是使用电化学来改变可用 d 轨道的密度。在上一个资助周期中，申请人的团队还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单层 MoS2，其光致发光比以往任何时候都更强。当前提案的第三个项目是使用这些新的纳米结构作为下一代设备（例如太阳能电池和光电探测器）的构建块。表现出强相关电子运动的纳米工程材料有可能提高我们对一系列深入研究的奇异量子电子现象的理解。这确实将是一个引人注目的科学成果。它还带来了技术成就。在上一个融资周期中，专业知识的发展导致了用于测试水的商用电导率仪的改进。在下一个资助周期中，申请人的小组将探索为改进传感器而开发的材料，用于检测特定分子（例如使用表面等离子体共振的生物分子）和指纹识别分子（使用拉曼光谱）。另一个重要成果是这项研究已经并将继续提供出色的跨学科培训。学生（包括本科生）的成就包括发表论文、参加会议展示他们的工作、开发教学实验室、获奖、推出产品以及应用他们的培训快速找到工作。