CAREER: Antimony-Based Nanowires and Nanowire Heterostructures: Synthesis and Characterization

该奖项由2009年《美国复苏和再投资法案》(公法111-5)资助。技术：该职业项目包括综合研究和教育活动。在所有已知的半导体中，III-V族锑基半导体显示出最小的带隙和最高的电子迁移率，但它们的器件探索是有限的。这主要是由于难以生长出高质量的锑基材料，以及缺乏晶格匹配的半绝缘衬底。纳米线的生长具有克服这些困难的潜力。本研究项目的目标是合成具有高质量和新颖的电学和光电性能的锑基纳米线和纳米线异质结构。该项目包括以下研究活动：研究合成未掺杂和掺杂纳米线的生长方法；开发成功的同轴和轴向纳米线异质结生长策略；展示不同类型的纳米线异质结构；使用电子显微镜、光学、电学和光电子测量表征纳米线和纳米线异质结构；通过器件制造和性能研究评估其在纳米电子学和纳米光子学应用方面的潜力。这项研究的成功预计将有助于开发一种通用的方法，以受控和复杂的方式生长基于第三组-锑材料系统的纳米结构，并详细了解第三组--锑纳米线的性质，特别是电子性质。非技术性：该项目解决具有高度技术相关性的材料科学专题领域的基本电子/光子材料研究问题。研究活动的成功将使将影响光发射和检测、电信、计算和传感器等重要技术领域的设备的开发成为可能。该项目包括一个综合教育和推广计划，旨在为从研究生到K-12的受众解决当前纳米科学教育中的关键挑战。这包括1)在普渡大学开发一门关于“纳米材料的物理和化学”的新的跨学科课程，2)通过参加暑期本科生研究奖学金(SURF)计划将本科生纳入与纳米相关的研究计划，3)为7-16名教师建立一个国家纳米科学学习与教学中心和纳米技术讲习班，4)为现有的纳米博物馆开发新的示范模块，并通过各种基于网络的工具作为纳米中心传播成果，以及5)努力通过妇女参与科学指导未被充分代表的学生群体。

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).Technical: This CAREER project includes integrated research and education activities. Group III-V antimony based semiconductors exhibit the smallest band gaps and highest electron mobilities of any known semiconductors yet their device exploration is limited. This is mainly due to the difficulties in growing antimony-based materials with high quality and the lack of a lattice-matched, semi-insulating substrate. Nanowire growth has the potential to overcome these difficulties. The objective of this research project is to synthesize antimony-based nanowires and nanowire heterostructures with high quality and novel electronic and opto-electronic properties. The project consists of the following research activities: investigation of the growth methods to synthesize undoped and doped nanowires; development of successful strategies to grow coaxial and axial nanowire heterostructures; demonstration of different types of nanowire heterostructures; characterization of nanowires and nanowire heterostructures using electron microscopy, optical, electrical, and optoelectronic measurements; evaluation of their potentials for nano-electronics and nano-photonics applications through device fabrications and performance investigations. Success of the research is expected to contribute to the development of a universal approach to grow nanostructures based on group III-antimony material system in a controlled and sophisticated manner as well as detailed understanding on properties, especially electronic properties, of group III-antimony nanowires.Non-technical: The project addresses basic electronic/photonic materials research issues in a topical area of materials science with high technological relevance. The success of the research activities will enable development of devices that will impact important technical areas such as light emission and detection, telecommunications, computing, and sensors. The project includes an integrated education and outreach program that aims at addressing critical challenges in current nanoscience education for audience ranging from graduate students to K-12. This includes 1) the development of a new interdisciplinary course on "Physics and Chemistry of Nanometerials" at Purdue University, 2) the integration of undergraduate students into nano-related research programs by participation in the Summer Undergraduate Research Fellowship (SURF) program, 3) a National Center for Learning and Teaching of Nanoscience and Nanotechnology Workshop for 7-16 teachers, 4) the development of new demonstration modules for an existing nano-museum and the dissemination of results through various web-based tools as the nano-HUB, and 5) an effort on mentoring underrepresented student group through Women in Science.