A Coordinated Experimental and Computational Modeling Investigation of Native Defects in Undoped, Nitrogen-Doped and Chlorine-Doped ZnSe and ZnMgSe Alloys Grown by Molecular..

小行星9806299 该项目旨在更好地了解ZnSe和相关合金中的点缺陷形成，包括对点缺陷和点缺陷复合物的性质以及生长过程中的缺陷来源的基本了解。最初的研究将集中在ZnSe，随后的努力包括ZnMgSe合金。该方法结合了分子束外延生长;在外延层中使用电子顺磁共振的点缺陷浓度的定量测量;详细的光致发光研究;以及，在平行的实验技术，第一原理的方法来建模缺陷的ZnSe。 该项目解决了具有高技术相关性的材料科学专题领域的基础研究问题。该研究将在基础层面上为电子/光子器件的重要方面提供基础材料科学知识。 实验工具现在可以允许原子水平上观察材料缺陷及其起源，当更好地理解时，将允许基础科学和技术的进步。从研究中获得的基本知识和理解预计将有助于提高先进器件和电路的性能和稳定性，为设计和生产改进的材料和材料组合提供基本的理解和基础。 该计划的一个重要特点是通过在一个基本和技术上重要的领域对学生进行培训来整合研究和教育。 ***.

9806299 Myers This project aims for greater understanding of point defect formation in ZnSe and associated alloys including a fundamental understanding of the nature of the point defect(s) and point defect complexes as well as defect origins during growth. Initial studies will focus on ZnSe, with subsequent efforts including ZnMgSe alloys. The approach combines molecular beam epitaxial growth; quantitative measurement of point defect concentrations in epilayers using electron paramagnetic resonance; detailed photoluminescence studies; and, in parallel with the experimental techniques, a first principles approach to modeling defects in ZnSe. %%% The project addresses basic 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. Experimental tools are now available to allow atomic level observation of materials defects and their origins which when better understood will allow advances in both fundamental science and technology. The basic knowledge and understanding gained from the research is expected to contribute to improving the performance and stability of advanced devices and circuits by providing a fundamental understanding and a basis for designing and producing improved materials, and materials combinations. 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. ***.