This inventor holds 1 USPTO granted patent. Top assignee: Bell Telephone Laboratories. Active years: 1976.
Company Filing History:
Years Active: 1976
Title: Thomas Perine Pearsall: Innovator in Infrared Photodetection Technology
Introduction
Thomas Perine Pearsall is a notable inventor based in Navesink, NJ (US). He is recognized for his contributions to the field of infrared photodetection technology. His innovative work has led to the development of a unique photodetector diode that utilizes a heterojunction of ternary III-V semiconductive alloys.
Latest Patents
Pearsall holds a patent for the "Growth and operation of a step-graded ternary III-V heterojunction p-n." This patent describes an infrared photodetection apparatus that employs a photodetector diode. The diode comprises a heterojunction of two epitaxial layers with differing compositions of a ternary III-V semiconductive alloy. The outer layer serves as both a radiation-admitting window and physical protection for the underlying absorbing layer. The ternary alloy includes metallic group III elements such as indium and gallium, and the principle can be extended to include group V elements like arsenic and antimony. The absorbing layer is selected to be substantially intrinsic, particularly for an N-type layer of In.sub.x Ga.sub.(1.sub.-x) As. Matching this absorbing layer to a gallium arsenide substrate is achieved through a series of step-graded composition layers of indium gallium arsenide. Pearsall's patent represents a significant advancement in the field of photodetection.
Career Highlights
Pearsall has made significant contributions during his career at Bell Telephone Laboratories. His work has been instrumental in advancing the technology used in infrared photodetection. He has been recognized for his innovative approach and technical expertise in the field.
Collaborations
Throughout his career, Pearsall has collaborated with notable colleagues, including Robert E. Nahory and Martin Alan Pollack. These collaborations have further enriched his work and contributed to advancements in photodetection technology.
Conclusion
Thomas Perine Pearsall is a distinguished inventor whose work in infrared photodetection has made a lasting impact on the field. His innovative patent and contributions at Bell Telephone Laboratories highlight his expertise and dedication to advancing technology.