CAREER: The Materials Science of Metamorphic Buffer Layers for High Performance Device Applications

职业：高性能器件应用的变质缓冲层的材料科学

• 批准号: 0092602
• 负责人: Joanna Millunchick
• 金额: $ 45.91万
• 依托单位: Regents of the University of Michigan - Ann Arbor
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-01-01 至 2005-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0092602&HistoricalAwards=false
• 关键词: CAREER; Materials; Science; Metamorphic; Buffer

This CAREER project addresses the formation, strain relaxation, and morphological evolution of metamorphic buffer layers and their impact on the properties and performance of device applications specific to the wireless communication industry. Buffer layers based on Sb-containing alloys will be studied to achieve flat and low defect layers. Layer designs that reduce roughness and threading dislocations will also be studied. Properties will be characterized using a in situ (Multi-Beam Optical Stress Sensor, Reflection High Energy Electron Diffraction, Scanning Tunneling Microscopy)and ex situ (triple axis x-ray diffraction, transmission electron diffraction, photoluminescence, Hall measurements) techniques to assess microstructure and morphology, and their impact on electronic and optical properties. Additionally, MHEMT devices will be fabricated based on optimized metamorphic buffer layers, tested, and performance compared to the state-of-the-art devices. The project will be integrated into educational activities that include undergraduate and graduate curriculum development, undergraduate research opportunities, and outreach to young women.%%% The project addresses fundamental research issues in a topical area of materials science having high technological relevance. The research will contribute basic materials science and physics knowledge at a fundamental level to important aspects of electronic/photonic materials. The scope of the project will expose students to challenges in materials synthesis, processing, and characterization. An important feature of the project is the strong emphasis on education, outreach to young women, and the integration of research and education. ***

这个CAREER项目解决了变形缓冲层的形成，应变松弛和形态演变及其对无线通信行业特定设备应用的性能和性能的影响。将研究基于含Sb合金的缓冲层以实现平坦和低缺陷层。层设计，减少粗糙度和螺纹位错也将进行研究。将使用原位（多光束光学应力传感器、反射高能电子衍射、扫描隧道显微镜）和非原位（三轴X射线衍射、透射电子衍射、光致发光、霍尔测量）技术表征性能，以评估微观结构和形态及其对电子和光学性能的影响。此外，MHEMT器件将基于优化的变质缓冲层制造，测试，并与最先进的器件进行性能比较。该项目将被纳入教育活动，包括本科生和研究生课程开发，本科生研究机会，并推广到年轻女性。该项目涉及具有高度技术相关性的材料科学专题领域的基础研究问题。该研究将为电子/光子材料的重要方面提供基础材料科学和物理知识。该项目的范围将使学生面临材料合成，加工和表征方面的挑战。该项目的一个重要特点是大力强调教育、与青年妇女的联系以及研究与教育的结合。***