Ujjwal K Das

Title: Ujjwal K Das: Innovator in Photovoltaic Technology

Introduction

Ujjwal K Das is a prominent inventor based in Bear, Delaware, known for his contributions to the field of photovoltaic technology. His innovative work focuses on processes that enhance the efficiency and effectiveness of solar energy conversion.

Latest Patents

Ujjwal K Das holds a patent titled "Processes for fabricating all-back-contact heterojunction photovoltaic cells." This patent outlines methods for creating back contacts for photovoltaic cell devices. The processes include depositing a passivation layer on the back surface of a wafer, followed by the deposition of an emitter layer on the passivation layer. A metal layer is then applied to the emitter layer, and selective areas of the metal layer are laser fired to form base contacts. The method also involves laser cutting the metal layer to create isolation regions between emitter and base contacts, along with applying a stream of reactive gas to form a second passivation layer in the isolation region. Additionally, the process may include inkjetting a resist on the passivation layer in a specific pattern and laser cutting the metal layer over the resist to create the isolation region. Ujjwal K Das has 1 patent to his name.

Career Highlights

Ujjwal K Das is affiliated with the University of Delaware, where he continues to advance research in photovoltaic technologies. His work has significantly contributed to the development of more efficient solar cells, which are crucial for sustainable energy solutions.

Collaborations

Ujjwal has collaborated with notable colleagues, including Robert W Birkmire and Steven S Hegedus, who share his passion for innovation in solar energy technology.

Conclusion

Ujjwal K Das is a key figure in the advancement of photovoltaic technology, with a focus on innovative processes that improve solar energy efficiency. His contributions are vital for the future of renewable energy.