Company Filing History:
2 out of 15,605 
2 out of 3,645 
1 out of 832,812 Years Active: 1994-2002
Title: Scott A McPherson: Innovator in Photodiode Technology
Introduction
Scott A McPherson is a notable inventor based in Eagan, MN (US). He has made significant contributions to the field of photodiode technology, holding a total of 5 patents. His work focuses on enhancing the performance and efficiency of photodetectors, particularly in ultraviolet light applications.
Latest Patents
Among his latest patents is the "Back-illuminated heterojunction photodiode." This invention features a p-i-n photodiode that achieves high responsivity and quantum efficiency through an AlGaN heterojunction. The design allows for photon absorption within the p-n junction, effectively eliminating carrier losses due to surface recombination and diffusion processes. Ultraviolet light is transmitted through a transparent substrate, such as sapphire, and absorbed in an undoped AlGaN layer, which is strategically sandwiched between n-doped and p-doped AlGaN layers. The mole fractions of Al and Ga in these layers can be adjusted to achieve a desired wavelength bandpass of light detection.
Another significant patent is the "High gain GaN/AlGaN heterojunction phototransistor." This device consists of a GaN/AlGaN heterojunction bipolar phototransistor with an AlGaN contact, i-GaN absorbing layer, p-GaN base, and n-GaN emitter layers. It is built on a UV transparent substrate and boasts a gain greater than 10^5. The phototransistor demonstrates a remarkable drop in responsivity across a specific wavelength range and features rapid electrical quenching of persistent photoconductivity. This innovation represents a substantial improvement in internal gain UV detection compared to traditional GaN-based photoconductors.
Career Highlights
Scott has worked with prominent companies such as Honeywell International Inc. and Honeywell GmbH. His experience in these organizations has contributed to his expertise in photonics and semiconductor technologies.
Collaborations
Throughout his career, Scott has collaborated with notable colleagues, including Wei Yang and Thomas E Nohava. Their joint efforts have further advanced the field of photodiode technology.
Conclusion
Scott A McPherson is a distinguished inventor whose work in photodiode technology has led to significant advancements in the field. His innovative patents and collaborations reflect his