David A Collins

Title: David A Collins: Innovator in Semiconductor Technology

Introduction

David A Collins is a notable inventor based in San Diego, CA, with a focus on semiconductor technology. He holds a total of 5 patents that contribute significantly to advancements in the field. His work primarily revolves around improving processes related to indium phosphide, a critical material in semiconductor applications.

Latest Patents

One of Collins' latest patents is titled "Generation of ohmic contacts on indium phosphide." This innovative process addresses the common issue of high-temperature annealing by allowing low resistance ohmic contacts to be formed on indium phosphide. The method involves passing a current between two contacts of a specially chosen metallic conductor, which is doped to match the conductivity type of the underlying semiconductor. This current passage facilitates the combination of the contacts with the semiconductor through field-assisted thermal diffusion.

Another significant patent is the "Furnace transient anneal process." This method is designed for annealing semiconductor samples, particularly after ion implantation. The process utilizes a furnace that moves over the semiconductor sample, which is supported on a stationary wire basket made of low thermal mass tungsten wire. The furnace operates at a temperature slightly above the desired anneal temperature, allowing the sample to reach the necessary temperature quickly. This technique ensures uniform heating and rapid annealing of ion-implanted indium phosphide semiconductors within 10 to 30 seconds at approximately 700°C, effectively preventing unwanted movement of impurities.

Career Highlights

Throughout his career, Collins has worked with various organizations, including the United States Navy and the Department of Health. His contributions to semiconductor technology have been recognized and utilized in various applications, showcasing his expertise in the field.

Collaborations

Collins has collaborated with notable professionals such as Derek L Lile and Carl R Zeisse, further enhancing the impact of his work in semiconductor innovations.

Conclusion

David A Collins stands out as a significant figure in the realm of semiconductor technology, with his innovative patents paving the way for advancements in the industry. His contributions continue to influence the development of efficient semiconductor processes.