Silicon and Germanium-Containing Nanocrystals, Nanorods and Nanowires

含硅和锗的纳米晶体、纳米棒和纳米线

• 批准号: 1308813
• 负责人: Brian Korgel
• 金额: $ 42万
• 依托单位: University of Texas at Austin
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-08-15 至 2017-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1308813&HistoricalAwards=false
• 关键词: Silicon; Germanium; Containing; Nanocrystals; Nanorods

Brian A. Korgel from the University of Texas at Austin is supported by the Macromolecular, Supramolecular and Nanochemistry Program of the Division of Chemistry in research focusing on new chemical routes to silicon- and germanium-containing nanocrystals, nanorods and nanowires with precisely controlled dimensions. Novel reaction pathways are being developed to provide exquisite control of reactant decomposition, semiconductor formation and crystallization, and effective surface passivation. For the study of quantum confinement-related optical and electronic properties, silicon and germanium nanomaterials in the quantum size range are synthesized with the ability to manipulate shape and chemically passivate surfaces. Silicon and germanium-containing iron chalcogenides, Fe2MS4 (M = Si, Ge), are also being synthesized and studied for photovoltaic applications, as new photocatalyst analogs to the earth-abundant semiconductor, pyrite FeS2, or "Fool's gold" and as alternative electrode materials for next generation lithium ion batteries.Silicon- and germanium-based nanomaterials have a variety of applications in energy storage and solar energy utilization. Specifically, they have applications in medicine, for transistors and displays, as electrode materials in lithium ion batteries, as novel photocatalysts, and as photovoltaic devices. The silicide and germanide compounds targeted in this study represent a new class of photocatalysts and light-absorbing films in photovoltaics made of earth-abundant materials. This project also supports the education and training of graduate and undergraduate students, along with additional educational activities that include visits and demonstrations to local primary and secondary schools, teacher training, and undergraduate education efforts involving nanotechnology, such as the development of a new freshman course on commercialization and innovation, team-taught with colleagues from the business school.

德克萨斯大学奥斯汀分校的 Brian A. Korgel 得到了化学系高分子、超分子和纳米化学项目的支持，其研究重点是尺寸精确控制的含硅和锗纳米晶体、纳米棒和纳米线的新化学路线。 人们正在开发新的反应途径，以提供对反应物分解、半导体形成和结晶以及有效表面钝化的精确控制。 为了研究与量子限制相关的光学和电子特性，合成了具有操纵形状和化学钝化表面能力的量子尺寸范围内的硅和锗纳米材料。 含硅和含锗的铁硫属化物 Fe2MS4（M = Si、Ge）也正在针对光伏应用进行合成和研究，作为地球上丰富的半导体黄铁矿 FeS2 或“愚人金”的新型光催化剂类似物以及替代电极下一代锂离子电池材料。硅基和锗基纳米材料在能源存储和太阳能利用方面有多种应用。 具体来说，它们在医学、晶体管和显示器、锂离子电池中的电极材料、新型光催化剂和光伏器件中都有应用。 这项研究的目标硅化物和锗化物化合物代表了由地球丰富的材料制成的光伏发电中的一类新型光催化剂和吸光薄膜。 该项目还支持研究生和本科生的教育和培训，以及其他教育活动，包括对当地中小学的参观和演示、教师培训以及涉及纳米技术的本科生教育工作，例如开发新的新生课程关于商业化和创新，与商学院的同事进行团队授课。