Location History:
- Tokyo, JP (2021 - 2023)
- Nagasaki, JP (2022 - 2023)
Company Filing History:
Years Active: 2021-2025
Title: Yasufumi Kawakami: Innovator in Silicon Crystal Technology
Introduction
Yasufumi Kawakami is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of silicon crystal technology, holding a total of 7 patents. His work focuses on methods for producing high-quality silicon crystals, which are essential for various applications in electronics and materials science.
Latest Patents
Kawakami's latest patents include innovative methods for producing n-type silicon single crystals. One notable patent describes a production method that involves pulling up monocrystalline silicon from a silicon melt containing red phosphorus as a main dopant. This method results in monocrystalline silicon with an electrical resistivity ranging from 1.7 mΩcm to 2.0 mΩcm. Another patent outlines a technique for producing monocrystalline silicon with a straight-body diameter between 301 mm and 330 mm, utilizing the Czochralski process. This method controls the resistivity at the straight-body start point to fall within a range from 2.50 mΩcm to 2.90 mΩcm, subsequently decreasing it to between 1.6 mΩcm and 2.0 mΩcm.
Career Highlights
Kawakami is currently associated with Sumco Corporation, a leading company in the semiconductor industry. His expertise in silicon crystal production has positioned him as a key figure in advancing technologies that are critical for electronic devices. His innovative approaches have not only enhanced the quality of silicon wafers but have also contributed to the efficiency of semiconductor manufacturing processes.
Collaborations
Throughout his career, Kawakami has collaborated with notable colleagues, including Koichi Maegawa and Fukuo Ogawa. These partnerships have fostered a collaborative environment that encourages the exchange of ideas and the development of cutting-edge technologies in silicon crystal production.
Conclusion
Yasufumi Kawakami's contributions to the field of silicon crystal technology are noteworthy. His innovative patents and collaborations have significantly impacted the semiconductor industry, paving the way for advancements in electronic materials. His work continues to inspire future innovations in this critical area of technology.