Daisuke Okumura

Title: Daisuke Okumura: Innovator in Thin Film Solar Cell Technology

Introduction

Daisuke Okumura is a prominent inventor based in Tokyo, Japan. He is known for his significant contributions to the field of solar energy, particularly in the development of thin film solar cells. His innovative approach has led to advancements that enhance the efficiency and production of solar technology.

Latest Patents

Daisuke Okumura holds a patent for an N-type window layer for a thin film solar cell and the method of making it. This patent describes a process where transparent conductive ZnO films are formed at a high rate, achieving performance levels comparable to those formed by Metal-Organic Chemical Vapor Deposition (MOCVD). The method reduces the influence of sputtering bombardment, which is crucial for maintaining the integrity of the films. The production process involves forming a first conductive film as an interface-protective layer on a high-resistance buffer layer using low-output RF sputtering. Subsequently, second and third conductive films for the window layer are created through DC magnetron sputtering in a stepwise manner.

Career Highlights

Daisuke Okumura is currently employed at Showa Shell Sekiyu K.K., where he continues to innovate in the field of solar energy. His work has been instrumental in advancing the technology used in thin film solar cells, contributing to more sustainable energy solutions.

Collaborations

Daisuke has collaborated with notable colleagues, including Katsumi Kushiya and Ichiro Sugiyama. Their combined expertise has fostered a productive environment for innovation and development in solar technology.

Conclusion

Daisuke Okumura's contributions to the field of thin film solar cells exemplify the impact of innovative thinking in renewable energy. His patent and ongoing work at Showa Shell Sekiyu K.K. highlight the importance of advancements in solar technology for a sustainable future.