Fabrication and Characterization of Micro- and Nano-structured Materials Systems

微米和纳米结构材料系统的制造和表征

• 批准号: RGPIN-2014-04664
• 负责人: Mascher, Peter
• 金额: $ 2.62万
• 依托单位: McMaster University
• 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=587943
• 关键词: Fabrication; Characterization; Micro; Nano; structured

This proposal is concerned with the fabrication and comprehensive characterization of complex materials structures, including - but not limited to - silicon-based systems for photonics applications. It is our aim to (a) contribute to a better understanding of the atomistic processes that determine properties that are critical to certain applications, (b) contribute to the optimization of materials and structures for photonic and - to a lesser extent - electronic applications, and (c) provide a strong and direct link between advanced materials science and state-of-the-art fabrication technology. The proposed research program builds on the demonstrated successes of current and previous research projects and will further intensify our work in silicon photonics and organic light emitting materials and devices. Silicon photonics is an internationally hotly pursued field, with potentially massive economic benefits. Over the past few years, we have demonstrated our ability to design and fabricate silicon-based materials systems that emit light via nano-crystals and/or -clusters and/or through rare-earth doping, leading to strong emission in the green, blue, and red, respectively. Most exciting form a practical perspective is the potential for tunability of the emission wavelength and/or the generation of white light. Even though these results are reproducible at the technological level, much better understanding of the underlying microphysics is still required. A similar case – albeit in a more narrowly defined application space - can be made in favour of continued development of novel organic materials architectures for blue and white OLEDs. Common to these materials systems is the complexity of their physical and chemical make-up and the tendency to incorporate impurities and/or defects, all of which determine the optical and electronic properties. We will place particular emphasis on synergistic use of complementary analytical tools to be able to link microscopic and/or structural features to optical and/or electronic properties of the investigated systems. One of the key facilities in that regard will be the McMaster Intense Positron Beam Facility (MIPBF), which was funded in the 2009 CFI competition and will be operational in late 2014. MIPBF includes one of the world’s most intense sources of positrons, which will supply two experimental stations equipped to perform positron lifetime and Doppler-broadening studies of open-volume defects in materials and positron-based surface characterization, respectively.The MIPBF will be unique in Canada, one of only a few operating worldwide, and will greatly add to the collaborative facilities already in existence at McMaster, such as the Canadian Centre for Electron Microscopy (CCEM), the Brockhouse Institute for Materials Research (BIMR), and the Centre for Emerging Device Technologies (CEDT). Off campus, we will continue to use the ion beam analytical facilities at Western University in London, ON and the unique facilities at the Canadian Light Source (CLS) synchrotron laboratory in Saskatoon, SK. In both research thrusts, the combination of wide-ranging fabrication capabilities with synchrotron-based X-ray studies, electron microscopy, positron annihilation spectroscopy, and optical characterization sets our work apart from many conventional studies of such systems. The proposed research program will provide ample opportunity for HQP to be trained in and work with state-of-the-art fabrication and characterization tools, in a multi-disciplinary and internationally collaborative environment. Such experience often is the differentiating factor when it comes to employment in academia, research institutes, or innovative companies.

该提案涉及复杂材料结构的制造和综合表征，包括但不限于用于光子学应用的硅基系统。我们的目标是（a）有助于更好地理解决定某些应用关键属性的原子过程，（B）有助于优化光子和-在较小程度上-电子应用的材料和结构，以及（c）在先进材料科学和最先进的制造技术之间提供强有力的直接联系。 拟议的研究计划建立在当前和以前研究项目的成功基础上，将进一步加强我们在硅光子学和有机发光材料和器件方面的工作。硅光子学是国际上热门的领域，具有潜在的巨大经济效益。在过去的几年里，我们已经证明了我们的能力，设计和制造硅基材料系统，通过纳米晶体和/或簇和/或通过稀土掺杂发光，导致在绿色，蓝色和红色，分别强发射。从实际的角度来看，最令人兴奋的是发射波长的可调谐性和/或白色光的产生的潜力。尽管这些结果在技术层面上是可重复的，但仍然需要对潜在的微观物理学有更好的理解。类似的情况-尽管在更狭窄的应用空间中-可以有利于继续开发用于蓝色和白色OLED的新型有机材料架构。 这些材料系统的共同点是其物理和化学组成的复杂性以及掺入杂质和/或缺陷的趋势，所有这些都决定了光学和电子特性。我们将特别强调互补分析工具的协同使用，以便能够将微观和/或结构特征与所研究系统的光学和/或电子特性联系起来。这方面的关键设施之一将是麦克马斯特强正电子束设施（MIPBF），该设施在2009年CFI竞赛中获得资助，将于2014年底投入运营。MIPBF包括世界上最强的正电子源之一，它将提供两个实验站，分别用于材料中开体积缺陷的正电子寿命和多普勒展宽研究以及基于正电子的表面表征。MIPBF将是加拿大独一无二的，是全球少数几个运行的正电子源之一，并将大大增加麦克马斯特已经存在的合作设施，如加拿大电子显微镜中心（CCEM）、布罗克豪斯材料研究所（BIMR）和新兴器件技术中心（CEDT）。在校外，我们将继续使用位于安大略省伦敦的西方大学的离子束分析设施和位于SK萨斯卡通的加拿大光源（CLS）同步加速器实验室的独特设施。 在这两个研究方向中，广泛的制造能力与基于同步加速器的X射线研究，电子显微镜，正电子湮没光谱学和光学表征相结合，使我们的工作与许多传统的此类系统研究不同。拟议的研究计划将为HQP提供充足的机会，在多学科和国际合作的环境中接受培训并使用最先进的制造和表征工具。当涉及到在学术界，研究机构或创新公司就业时，这种经验往往是区分因素。