Raphael Tsu

Title: The Innovative Contributions of Raphael Tsu

Introduction

Raphael Tsu is a notable inventor based in Charlotte, NC, who has made significant contributions to the field of solid-state electronics. With a total of seven patents to his name, Tsu's work focuses on advanced electronic devices that exhibit unique properties.

Latest Patents

Among his latest patents is a groundbreaking device titled "Negative differential resistance device based on tunneling through microclusters." This solid-state electronic device is fabricated by depositing a thin layer of amorphous silicon on a single crystal substrate, doped N. The process involves simultaneously crystallizing and oxidizing the amorphous silicon in a dry nitrogen and oxygen mixture. The outcome is a layer of amorphous SiO2 surrounding microclusters of crystalline silicon. A layer of polycrystalline silicon is then deposited to a thickness of approximately 0.5 microns. Ohmic metal contacts are made to the top and bottom, and these active layers are isolated by insulating SiO2. When a bias voltage is applied between the metal contacts, negative differential resistance occurs due to tunneling through resonant energy levels in the microclusters.

Career Highlights

Throughout his career, Raphael Tsu has worked with various organizations, including the U.S. Government as represented by the Secretary of the Army. His innovative work has positioned him as a key figure in the development of advanced electronic devices.

Collaborations

Tsu has collaborated with notable individuals in his field, including James F. Harvey and Robert A. Lux. Their combined expertise has contributed to the advancement of technology in solid-state electronics.

Conclusion

Raphael Tsu's contributions to the field of electronics through his innovative patents and collaborations highlight his importance as an inventor. His work continues to influence the development of advanced electronic devices.