Crystal Growth by a Modified Liquid-Encapsulated Czochralski Process

9709944这个项目通过对液封提拉法的改进来解决电子和光子材料的块状晶体生长问题，重点是减少掺杂偏析。该方法包括研究和引入一种实现区域平坦化的技术，以使轴向掺杂分布平坦化；其想法是将生长熔体保持在成分C0/k，其中C0是所需的晶体成分k，即分离系数，并以与晶体生长相同的速度向熔体提供成分C0的附加材料。该项目致力于解决材料科学中与电子学和光子学具有高度技术相关性的热门领域的基础研究问题。这项研究将在基础水平上为制造电子/光子器件和集成电路所需的块状晶体材料贡献基本的材料科学知识。此外，从研究中获得的基本知识和理解有望通过为生产改进的材料和材料组合提供更好的理解和基础，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，通过培训对电子/光子学领域至关重要的研究领域的学生，将研究与教育相结合。***

9709944 Kou This project addresses bulk crystal growth of electronic and photonic materials by modifications to the liquid-encapsulated Czochralski technique with emphasis on reducing dopant segregation. The approach includes the study and introduction of a technique to achieve zone leveling for flattening the axial dopant profile; the idea is to maintain the growth melt at composition C0/k where C0 is the desired crystal composition, k, the segregation coefficient, and to supply additional material of composition C0 to the melt at the same rate as the crystal grows. %%% The project addresses basic research issues in a topical area of materials science having high technological relevance to electronics and photonics. The research will contribute basic materials science knowledge at a fundamental level to bulk crystalline materials required for fabrication of electronic/photonic devices and integrated circuitry. 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 better understanding and a basis for 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 research area essential to the field of electronics/photonics. ***