Robert C Torreano is a notable inventor based in Coon Rapids, MN (US). He has made significant contributions to the field of photonics, particularly in the development of advanced photodiodes and phototransistors. With a total of 2 patents, his work has garnered attention for its innovative approaches to light detection and conversion.

Latest Patents

Torreano's latest patents include the "Back-illuminated heterojunction photodiode" and the "High gain GaN/AlGaN heterojunction phototransistor." The back-illuminated heterojunction photodiode features a p-i-n structure that enhances responsivity and quantum efficiency by utilizing an AlGaN heterojunction. This design minimizes carrier losses by absorbing photons within the p-n junction. The ultraviolet light is transmitted through a transparent substrate, such as sapphire, and absorbed in the undoped AlGaN layer, which is sandwiched between n-doped and p-doped layers. The ability to adjust the mole fractions of Al and Ga allows for the detection of specific wavelength bands.

The high gain GaN/AlGaN heterojunction phototransistor is another remarkable invention. It consists of an AlGaN contact, i-GaN absorbing layer, p-GaN base, and n-GaN emitter layers, all formed on a UV transparent substrate. This phototransistor achieves a gain greater than 10^5 and demonstrates a significant drop in responsivity across a specific wavelength range. It also features rapid electrical quenching of persistent photoconductivity, high dark impedance, and no DC drift, making it suitable for various applications.

Career Highlights

Robert C Torreano is currently employed at Honeywell International Inc., where he continues to innovate in the field of photonics. His work has contributed to advancements in UV detection technologies, enhancing the performance of photonic devices.

Collaborations

Torreano has collaborated with notable colleagues such as Wei Yang and Thomas E Nohava, further enriching his research and development efforts.

Conclusion

Robert C Torreano's contributions to the field of photonics through his innovative patents and work at Honeywell International Inc. highlight his significant role as an inventor. His advancements in photodiode and phototransistor technology continue to influence the

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