Sumiyuki Midorikawa

Title: Sumiyuki Midorikawa: Innovator in Solar Cell Technology

Introduction

Sumiyuki Midorikawa is a prominent inventor based in Hitachi, Japan. He has made significant contributions to the field of solar cell technology, holding 2 patents that showcase his innovative approaches. His work focuses on enhancing the efficiency and effectiveness of solar energy systems.

Latest Patents

Midorikawa's latest patents include a process for producing solar cells and an electrode material for semiconductor devices. The process for producing solar cells involves applying a composition for anti-reflection coating formation on a silicon base plate with a p-n junction. This process includes printing an Ag paste for contact formation and heat-treating the plate to complete the anti-reflection coating and light-receiving side contact. The composition contains essential components such as metal-organic ligand complex compounds and organotin compounds.

The electrode material for semiconductor devices, particularly solar cells, comprises Ag powders and metals like zirconium and tantalum, along with an organic binder and solvent. This innovative material allows for the preparation of electrodes with low contact resistance, ensuring high performance without junction breakage or increased leak current.

Career Highlights

Midorikawa is associated with Hitachi, Ltd., a leading company in technology and innovation. His work has significantly impacted the development of solar energy solutions, contributing to the advancement of sustainable energy technologies.

Collaborations

Some of his notable coworkers include Mitsuo Nakatani and Haruhiko Matsuyama, who have collaborated with him on various projects related to solar technology.

Conclusion

Sumiyuki Midorikawa's contributions to solar cell technology exemplify his commitment to innovation and sustainability. His patents reflect a deep understanding of materials and processes that enhance the efficiency of solar energy systems.