Hao Lee

Title: Innovations by Hao Lee

Introduction

Hao Lee is an accomplished inventor based in Lawrenceville, NJ (US). He has made significant contributions to the field of semiconductor technology, holding two patents that showcase his innovative approach to laser devices and thermophotovoltaic cells.

Latest Patents

One of Hao Lee's latest patents is for a laser diode having separated, highly-strained quantum wells. This semiconductor laser device utilizes highly-strained ternary and quasi-ternary compounds as materials for each quantum well. The first device structure features a quantum well composition range that extends from strained ternary compounds used in conventional quantum well laser devices. The second device structure employs a similar design but incorporates new quasi-ternary compounds with compositions outside the miscibility gap of corresponding quaternary compounds for quantum wells in GaSb or InAs-based laser devices. This innovation enhances the performance of mid-infrared laser devices operating in the 2.2-4.0 µm range. The semiconductor diode laser can be configured to operate in either multi-mode or single-mode radiation.

Another notable patent is for a heterojunction thermophotovoltaic cell. This device includes a semiconductor body with regions of n-type and p-type conductivity adjacent to each other, forming a p-n junction. The p-type region is made of a material that absorbs black-body radiation, while the n-type region has a wider band gap. This structure results in a cell with improved open circuit voltage and high internal efficiency, creating a space charge region in the n-type region.

Career Highlights

Hao Lee is currently employed at Sarnoff Corporation, where he continues to develop innovative technologies in the semiconductor field. His work has contributed to advancements in laser technology and energy conversion systems.

Collaborations

Hao Lee has collaborated with notable coworkers such as Dmitri Z Garbuzov and John Charles Connolly, further enhancing the innovative environment at Sarnoff Corporation.

Conclusion

Hao Lee's contributions to semiconductor technology through his patents reflect his dedication to innovation and advancement in the field. His work continues to influence the development of cutting-edge laser devices and thermophotovoltaic cells.