Kunihiro Matsukuma

Title: **Kunihiro Matsukuma: Innovator in Solar Cell Technology**

Introduction

Kunihiro Matsukuma is a significant figure in the field of semiconductor technology, particularly known for his contributions to solar cell innovations. Based in Hitachi, Japan, he holds two patents that showcase his expertise in optimizing the functionality and efficiency of solar cells.

Latest Patents

Matsukuma's latest patents include a "Method of Making Light-Receiving Diode" and a "Process for Producing Solar Cells." The first patent describes a method for manufacturing a solar cell with a p-n junction formed in a semiconductor substrate. In this innovation, impurity ions are implanted through an oxide film mask, allowing for a p-n junction that is deep in electrode regions but shallow elsewhere. This design enhances spectral sensitivity in short wavelength ranges and utilizes the oxide film as a passivation layer to protect minority carriers during heat treatment.

The second patent details a process for producing solar cells by applying an anti-reflection coating on a silicon base plate. This process involves printing Ag paste for contact formation and heat-treating the assembly to finish the anti-reflection coating. The composition used in the anti-reflection coating formation is noteworthy for including metal-organic ligand complex compounds and organotin compounds, which contribute to the overall performance of the solar cells.

Career Highlights

Kunihiro Matsukuma is associated with Hitachi, Ltd., a prominent technology company where he engages in pioneering research and development in semiconductor technologies. His work has not only advanced the company's prowess in solar energy solutions but has significantly impacted the broader field as well.

Collaborations

Throughout his career, Matsukuma has collaborated with talented individuals like Yasuhiro Kida and Koichi Suda, enriching his projects through their combined expertise. These collaborations have facilitated the development and enhancement of innovative technologies in solar energy.

Conclusion

Kunihiro Matsukuma's contributions to solar cell technology embody the spirit of innovation and the pursuit of enhancing renewable energy solutions. His patents reflect a dedicated effort to improve the efficiency and effectiveness of solar cells, positioning him as a notable inventor in the field. As advancements in renewable energy continue to evolve, Matsukuma's work stands as a significant part of that progress.