Solution-grown Nanowire and Nanotube Arrays, and Ordered Hybrid Nanoarchitectures incorporating them

溶液生长的纳米线和纳米管阵列，以及包含它们的有序混合纳米结构

• 批准号: RGPIN-2015-06630
• 负责人: Shankar, Karthik
• 金额: $ 2.55万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=686032
• 关键词: Solution; grown; Nanowire; Nanotube; Arrays

Research in nanotechnology is moving from studying the unique properties of relatively isolated nanomaterial components to generating and studying nano-systems and nano-architectures with unique and in some cases counter-intuitive properties (e.g. negative index metamaterials). While the previous generation of components such as colloidal quantum dots and metal nanoparticles performed spectacularly in biomedical diagnostics and sensing more generally, the present generation of nano-architectures has the potential to meaningfully impact the global energy and emissions problems through the design of improved photovoltaics, thermophotovoltaics and catalysts. Such nano-architectures are most powerful when they combine two or more of the following components in an ordered fashion preferably with deterministic spatial organization: semiconductors, low-loss metals and pi-conjugated organic molecules. Towards this end, the Shankar group will use its expertise in one-dimensional (1-D) semiconducting nanomaterials and also build upon its strong track record in using 1-D nanomaterials in the active layer of devices such as photovoltaics, photocatalysts, thin film transistors and biosensors. ***1-D nanotube/nanopore/nanorod arrays will be used as a building block to synthesize artificially structured nanomaterials of greater complexity and enhanced optoelectronic functionality. The interaction of plasmonic, electronic and excitonic effects in such structures is phenomenologically rich and is only recently receiving the attention that it deserves. Such ordered hybrid nanoarchitectures that intelligently combine the above three components offer the tools to achieve the desired control over the activities of photons and electrons, be it through the improvement in absorption, manipulation of the optical absorption and luminescence, and enhancement of charge separation & charge transport. We further propose to study 1-D nanomaterials and hybrid nanoarchitectures containing them using a powerful suite of spectroscopic and transient techniques to probe their optoelectronic properties. The scientific goal of these studies is to gain a deeper understanding of the properties while the technological goal is to understand and overcome performance bottlenecks, and bridge the gap between material structure and device performance.****We shall continue efforts in advancing isolated nanomaterial components. We propose to do this by extending the frontiers of anodic synthesis of aligned nanotube/nanorod arrays to new classes of semiconductors and by unlocking the full potential of magnetic fields in electrochemical anodization.****Optoelectronic and photonic devices that involve the transport, dispersion and interconversion of light and charge, form the final goals of this research. Such devices are key to both the alternative energy and information technology industries.**

纳米技术的研究正在从研究相对孤立的纳米材料组分的独特性质转向产生和研究具有独特的、在某些情况下是反直觉性质的纳米系统和纳米结构（例如负折射率超材料）。虽然上一代的组件，如胶体量子点和金属纳米颗粒在生物医学诊断和传感方面表现出色，但目前这一代的纳米架构有可能通过设计改进的光伏、热光伏和催化剂，对全球能源和排放问题产生有意义的影响。当这种纳米结构以有序的方式结合以下两种或多种组件时，它们是最强大的，最好是具有确定性的空间组织：半导体，低损耗金属和π共轭有机分子。为此，尚卡尔集团将利用其在一维（1-D）半导体纳米材料方面的专业知识，并利用其在光电、光催化剂、薄膜晶体管和生物传感器等器件有源层中使用一维纳米材料的良好记录。1-D纳米管/纳米孔/纳米棒阵列将被用作合成更复杂和增强光电功能的人工结构纳米材料的基石。在这种结构中，等离子体、电子和激子效应的相互作用在现象上是丰富的，只是最近才得到应有的重视。这种有序的混合纳米结构智能地结合了上述三种成分，为实现对光子和电子活动的预期控制提供了工具，无论是通过改善吸收，操纵光学吸收和发光，还是增强电荷分离和电荷输运。我们进一步建议使用一套强大的光谱和瞬态技术来研究一维纳米材料和包含它们的混合纳米结构，以探测它们的光电特性。这些研究的科学目标是更深入地了解其性质，而技术目标是了解并克服性能瓶颈，弥合材料结构与器件性能之间的差距。****我们将继续努力推进分离的纳米材料组件。我们建议将纳米管/纳米棒阵列阳极合成的前沿扩展到新的半导体类别，并通过释放电化学阳极氧化中磁场的全部潜力来实现这一目标。****涉及光与电荷的传输、色散和相互转换的光电和光子器件构成了本研究的最终目标。这类设备是替代能源和信息技术产业的关键