Dawei He

Title: Dawei He: Innovator in Molecular Sieves and SOI Devices

Introduction

Dawei He is a prominent inventor based in Shanghai, China. He has made significant contributions to the fields of molecular sieves and silicon-on-insulator (SOI) devices. With a total of 4 patents to his name, his work has advanced the technology in these areas.

Latest Patents

One of Dawei He's latest patents is a method for preparing a Y type molecular sieve having a high silica-to-alumina ratio. This innovative method involves mixing deionized water, a silicon source, an aluminum source, an alkali source, and a tetraalkylammonium cation source as a template agent to create an initial gel mixture. After aging the mixture at an appropriate temperature, it is fed into a high-pressure synthesis kettle for crystallization. The resulting product is a phase-pure Y type molecular sieve with high crystallinity, achieving a SiO/AlO ratio of not less than 6.

Another notable patent is the manufacturing method of SOI high-voltage power devices. This method includes forming a first oxide layer on the surface of the SOI substrate, followed by the removal of this layer to create a depressed area. A second oxide layer is then formed in this area, and various processes are performed to create P-type and N-type regions, along with a gate region. The final steps involve forming metal sub-regions that contact these regions, resulting in a high-voltage power device.

Career Highlights

Dawei He is affiliated with the Chinese Academy of Sciences, where he conducts his research and development work. His innovative approaches have positioned him as a key figure in his field, contributing to advancements in technology and materials science.

Collaborations

Dawei He has collaborated with notable colleagues, including Xinhong Cheng and Zhongjian Wang. Their combined expertise has fostered a productive research environment, leading to significant innovations.

Conclusion

Dawei He is a distinguished inventor whose work in molecular sieves and SOI devices has made a lasting impact on technology. His patents reflect his commitment to innovation and excellence in research.