Company Filing History:
Years Active: 1983-1985
Title: **Innovator Spotlight: Abu N Choudhury**
Introduction
Abu N Choudhury, based in Belmont, MA, is an accomplished inventor with significant contributions to the field of semiconductor technologies. With two patents to his name, his work primarily focuses on advanced methods of ion implantation and low resistance contact techniques, significantly impacting the efficiency of semiconductor devices.
Latest Patents
1. **Dual Species Ion Implantation of Ternary Compounds Based on In-Ga-As**
This patent presents a method for ion implantation utilizing multiple energy Beryllium (Be.sup.+) to create p-type regions in n-In.sub.0.53 Ga.sub.0.47 As. The technique includes a novel approach to capless annealing of InGaAs at temperatures up to 700°C. Additionally, silicon ion implantation is performed to form n.sup.+ layers in previously Be-implanted InGaAs epilayers. The process has demonstrated an active efficiency of 40% for 50 KeV Be implants, while efficiencies of 86% and 38% have been identified for low and high energy silicon implants, respectively.
2. **Low Resistance Ohmic Contact**
This invention describes a method for achieving very low resistance ohmic contacts on p-type Indium Phosphide (InP) through light-assisted plating of gold (Au) and zinc (Zn). The innovative plating technique employs alternating positive and negative current pulses, facilitating the creation of patterned, small area contacts on device structures. This method is compatible with established n-type ohmic contacting procedures, enhancing the efficiency and performance of semiconductor devices.
Career Highlights
Abu N Choudhury is part of the team at the United States of America, as Represented by the Secretary of the Navy. His work has notably contributed to advancements in semiconductor technology, showcasing his expertise and innovative approaches in the field.
Collaborations
Throughout his career, Choudhury has collaborated with eminent colleagues such as Kamal Tabatabaie-Alavi and Clifton G Fonstad. Together, they have worked towards enhancing semiconductor technologies, fostering a collaborative environment that encourages innovation.
Conclusion
Abu N Choudhury stands as a prominent figure in the realm of semiconductor innovations, with his patents reflecting a commitment to advancing technology. His contributions continue to have a lasting impact in the field, paving the way for future advancements and collaborations.