Junichi Ohmura

Title: Junichi Ohmura: Innovating in Silicon Solar Cell Technology

Introduction

Junichi Ohmura, an accomplished inventor based in Wako, Japan, has made significant contributions to the field of solar energy technology. With a total of four patents to his name, Ohmura is recognized for his innovative methodologies in fabricating silicon solar cells. His work focuses on enhancing the efficiency and durability of solar cells, which is crucial for the advancement of renewable energy solutions.

Latest Patents

Ohmura’s latest patents include a sophisticated method for fabricating a back surface point contact silicon solar cell. This method involves creating p-doped and n-doped regions on the same side of the cell, enhancing its performance. The process begins with forming a passivating layer on the cell's surface and creating opened windows at the designated regions. A first metal layer, comprising aluminum, is then deposited and patterned to make contact with the p-doped and n-doped regions.

Further refining the technology, Ohmura applies an insulator layer of inorganic material or polyimide over the first metal layer. This layer is meticulously etched to ensure opened windows at the specific regions, followed by the deposition of a second three-layer metal stack that enhances contact quality. These innovative steps ensure that the cell's surface is well planarized, leading to improved conductibility and reduced solder fatigue.

Career Highlights

Throughout his career, Junichi Ohmura has demonstrated a commitment to advancing solar technology. His inventive approaches not only focus on current applications but also pave the way for future innovations in renewable energy. His patents represent a critical evolution in the design and functionality of solar cells, contributing to more sustainable energy practices.

Collaborations

Ohmura has collaborated with notable professionals in the field, including Pierre J Verlinden and Akira Terao. Together, they have combined their expertise to push the boundaries of solar technology, demonstrating the power of teamwork and shared knowledge in achieving groundbreaking results.

Conclusion

Junichi Ohmura continues to be a pivotal figure in the realm of solar technology, particularly in the fabrication of silicon solar cells. His innovative methods significantly contribute to the efficiency and reliability of renewable energy systems. As the demand for sustainable energy solutions grows, inventors like Ohmura are essential in driving forward the technologies needed to harness clean energy effectively.