Studies of Luminescence, Degradation, and Defects in II-VI Laser Diodes by Cathodoluminescence and X-Ray Microdiffraction

这个GOALI提案在哥伦比亚大学和飞利浦实验室之间的合作项目中解决了基础材料科学问题，以了解znse基异质结构中电子-空穴对复合、原子位移和缺陷产生之间的基本现象和相互作用。哥伦比亚大学的研究将涉及t依赖CL显微镜、光谱学和微观结构和应变的x射线微束映射。飞利浦实验室将提供最先进的mbe生长样品和具有电学和光学特性的设备。联合活动包括与PI和在飞利浦的研究生进行人员交流，以及与共同PI，飞利浦的T. M. Marshall在哥伦比亚大学进行交流。此外，与布鲁克海文国家实验室正在进行的合作将继续与x射线微束工作有关。本研究强调对电子/光子材料技术的基本机制和过程的理解，以及一些实际的方面。该项目由DMR/EM计划和MPS多学科活动办公室（OMA）支持。该项目涉及材料科学领域的前沿材料科学研究问题，具有很高的技术相关性。总的来说，这项研究将为电子/光子器件和集成电路的重要方面提供基础材料科学知识。此外，从研究中获得的基本知识和理解有望通过为设计和生产改进材料提供基本理解和基础，从而有助于提高先进器件和电路的性能。该计划的一个重要特点是通过培养学生在一个基础和技术上重要的领域的研究和教育的整合。＊＊＊

9722761 Cargill This GOALI proposal addresses basic materials science issues in a collaborative program between Columbia University and Philips Laboratories to understand fundamental phenomena and interactions between electron-hole pair recombination, atomic displacements and defect generation in ZnSe-based heterostructures. Research at Columbia will involve T-dependent CL microscopy, spectroscopy, and x-ray microbeam mapping of microstructure and strain. Philips Laboratories will provide state-of-the-art MBE-grown samples and devices characterized electrically and optically. The joint activities include staff exchange with the PI and graduate students spending time at Philips, and with the co-PI, T. M. Marshall from Philips spending time at Columbia. Additionally, an on-going collaboration with Brookhaven NL will continue in connection with the x-ray microbeam work. The proposed research emphasizes understanding of fundamental mechanisms and processes along with some the practical aspects of electronic/photonic materials technology. This project is supported by the DMR/EM program and the MPS Office of Multidisciplinary Activities (OMA). %%% The project addresses forefront materials science research issues in a topical area of materials science having high technological relevance. The research will contribute basic materials science knowledge at a fundamental level to important aspects of electronic/photonic devices and integrated circuitry, in general. Additionally, the fundamental knowledge and understanding gained from the research is expected to contribute to improving the performance of advanced devices and circuits by providing a fundamental understanding and a basis for designing and producing improved materials. An important feature of the program is the integration of research and education through the training of students in a fundamentally and technologically significant area. ***