James A Gregory

Title: **Innovative Mind: The Contributions of James A. Gregory**

Introduction

James A. Gregory, an esteemed inventor based in Sudbury, MA, has made significant contributions to the field of semiconductor technology, holding a remarkable seven patents. His work is particularly influential in areas related to image sensors, which are crucial in both astronomical and medical imaging applications. Gregory's innovative thinking has paved the way for advancements that address critical challenges in sensor technology.

Latest Patents

Among Gregory's latest patents is a novel process for **semiconductor surface passivation**, which focuses on enabling void-free direct-bonded MBE-passivated large-format image sensors. This groundbreaking technique can produce thin large-area image sensors particularly suited for UV and soft x-ray imaging. By carefully controlling hydrogen concentration within the silicon oxide layers of the image sensor and its supporting wafer, Gregory's method significantly reduces or eliminates voids in the bonding interface. Furthermore, this process is versatile and can be applied to any wafer that includes active circuitry needing a secondary support wafer.

Another notable patent refers to the **fabrication of UV-sensitive back illuminated CCD image sensors**. In this process, the wafer thickness of a front illuminated silicon CCD is minimized to around ten to twenty microns. The aluminum substrate is systematically removed, followed by the production of a 5-35 nanometer silicon oxide layer on the thinned back of the silicon wafer. The incorporation of boron ions through implantation within the back surface enhances the sensor's capabilities, and subsequent furnace annealing allows for the redeposition of the aluminum substrate to create gate contacts.

Career Highlights

Throughout his career, Gregory has collaborated with esteemed institutions such as the **Mobil Solar Energy Corporation** and the **Massachusetts Institute of Technology**. His journey as an inventor is marked by a commitment to applying his expertise in semiconductor technology to create innovative solutions that address real-world problems.

Collaborations

Gregory has had the privilege of working alongside prominent figures in the field, including co-workers Jack I. Hanoka and Eugene D. Savoye. Their collaborative efforts have fostered a rich environment for innovation, leading to the development of advanced technologies that continue to influence the sector.

Conclusion

James A. Gregory exemplifies the spirit of innovation through his extensive contributions to semiconductor technology. His patents not only showcase his expertise and forward-thinking approach but also highlight the potential for technological advancements that can arise from dedicated research and collaboration. As his work continues to impact various fields, Gregory's legacy as a leading inventor in image sensor technology is firmly established.