This inventor holds 2 USPTO granted patents. Top assignees: International Business Machines Corporation, Korea Advanced Institute of Science and Technology. Active years: 1994-1995.
Company Filing History:
1 out of 166,264 
1 out of 2,781 
Years Active: 1994-1995
Title: Byung T Ahn: Innovator in Silicon and Superconductors
Introduction
Byung T Ahn is a notable inventor based in Seoul, South Korea. He has made significant contributions to the fields of materials science and engineering, particularly in the production of polycrystalline silicon thin films and thallium superconductors. With a total of 2 patents, Ahn's work has advanced the development of high-performance electronic devices.
Latest Patents
Ahn's latest patents include a method for the production of polycrystalline silicon thin films. This method involves heat treatment of amorphous silicon thin films deposited on a substrate at relatively low temperatures ranging from 300°C to 600°C under controlled pressure conditions. The resulting polycrystalline silicon thin films exhibit increased grain sizes of about 60-300 micrometers. This innovative approach allows for the use of glass or ceramic substrates instead of more expensive quartz substrates. Additionally, Ahn's method utilizes SiH₄ gas as a source gas, which enhances the electron and positive hole mobility, making it suitable for high-performance applications such as TFT for LCDs and SRAM.
Another significant patent involves improved processes for producing Tl₂Ca₂Ba₂Cu₃ oxide superconductors. Ahn's work describes methods for creating thin film and bulk thallium superconductors with high critical current densities and low surface impedance. The process includes an annealing step in a reduced oxygen atmosphere, which is crucial for converting compounds into the desired Tl-2223 superconducting phase. This innovation allows for the production of electrical devices, including SQUIDs, with enhanced performance characteristics.
Career Highlights
Throughout his career, Byung T Ahn has worked with prestigious organizations, including the Korea Advanced Institute of Science and Technology and IBM. His experience in these institutions has contributed to his expertise in materials science and engineering.
Collaborations
Ahn has collaborated with notable colleagues such as Dae G Moon and Jeong Nam Lee. These partnerships have further enriched his research and development efforts in the field of superconductors and silicon technology.
Conclusion
Byung T Ahn's innovative contributions to the production of polycrystalline silicon thin films and thallium superconductors have positioned him as a key figure in materials science. His patents reflect a commitment to advancing technology and improving the performance of electronic devices.