This inventor holds 3 USPTO granted patents and 3 EPO patents. Top assignee: Kaneka Corporation. Active years: 2009-2010.
Location History:
- Otsu, JP (2009)
- Ohtsu, JP (2010)
- Shiga, JP (2010)
Company Filing History:
Years Active: 2009-2010
Title: Yohei Koi: Innovator in Thin Film Solar Cell Technology
Introduction
Yohei Koi is a prominent inventor based in Otsu, Japan. He has made significant contributions to the field of solar energy, particularly in the development of thin film solar cell technology. With a total of 3 patents to his name, Koi's work focuses on enhancing the efficiency and cost-effectiveness of solar cells.
Latest Patents
Koi's latest patents include innovative designs for silicon-based thin film solar cells. One of his notable inventions describes a method that exhibits a sufficient light trapping effect while maintaining low series resistance. This is achieved by sequentially forming a silicon-based low refractive index layer and a thin silicon-based interface layer on the backside of a photoelectric conversion layer. This approach allows for the efficient and low-cost production of silicon-based thin film solar cells.
Another significant patent involves a substrate for thin film solar cells, which improves the performance of the solar cells. This invention provides an inexpensive substrate that enhances light trapping effects by increasing the unevenness of the substrate. The substrate features a transparent insulating layer and a transparent electrode layer that includes zinc oxide (ZnO). The design incorporates fine surface unevenness, which effectively improves the performance of the thin film solar cell.
Career Highlights
Yohei Koi is currently employed at Kaneka Corporation, where he continues to innovate in the field of solar technology. His work has been instrumental in advancing the capabilities of thin film solar cells, making them more accessible and efficient for widespread use.
Collaborations
Koi collaborates with notable colleagues such as Toshiaki Sasaki and Kenji Yamamoto. Their combined expertise contributes to the ongoing development of cutting-edge solar technologies.
Conclusion
Yohei Koi's contributions to thin film solar cell technology exemplify his commitment to innovation in renewable energy. His patents reflect a deep understanding of materials science and engineering, paving the way for more efficient solar energy solutions.