Yasufumi Tsunomura

Title: **Innovative Contributions of Yasufumi Tsunomura in Photovoltaics**

Introduction

Yasufumi Tsunomura, based in Kobe, Japan, is an accomplished inventor with a notable portfolio of 19 patents. His work primarily focuses on advancements in solar cell technology, specifically aimed at enhancing the efficiency and manufacturability of photovoltaic devices.

Latest Patents

Among his latest innovations is a **Method of Manufacturing Back Surface Junction Type Solar Cell**. This method includes several intricate steps, such as forming a conductive thin film layer on a semiconductor substrate, followed by the application of an insulating film. The process intricately involves the formation of conductive thin film layer exposed portions and a plating film, along with selective removal of materials to ensure optimal functionality of the solar cell.

Another significant patented invention by Tsunomura is the **Photovoltaic Device**. This device features a crystalline semiconductor substrate with an amorphous semiconductor layer on its surface. A key aspect of this invention is the oxidized interface containing a high concentration of oxygen, enhancing the efficiency of the photoelectric conversion process.

Career Highlights

Tsunomura has made substantial contributions during his career, having worked with prominent companies such as Panasonic Intellectual Property Management Co., Ltd. and Sanyo Electric Co., Ltd. His experience at these firms has allowed him to translate innovative ideas into practical applications, further advancing the field of solar technology.

Collaborations

Throughout his career, Tsunomura has engaged in fruitful collaborations with notable colleagues including Yukihiro Yoshimine and Eiji Maruyama. Their collaborative efforts have played a crucial role in driving forward various projects, particularly in the realm of photovoltaic research and development.

Conclusion

Yasufumi Tsunomura’s contributions to the field of solar technology through his patents and collaborative work have positioned him as a significant figure in the world of innovations. His inventions not only highlight his technical acumen but also reflect the ongoing evolution of renewable energy solutions. As the demand for efficient sustainability grows, innovators like Tsunomura are pivotal in shaping the future of energy.