Kohei Yamada

Title: Kohei Yamada: Innovator in Radiation Detection Technology

Introduction

Kohei Yamada is a prominent inventor based in Kitaibaraki, Japan. He has made significant contributions to the field of radiation detection technology, holding a total of 3 patents. His work focuses on enhancing the performance and reliability of radiation detecting elements.

Latest Patents

Yamada's latest patents include a radiation detecting element and a method for producing this element. The radiation detecting element is designed to ensure high adhesion between electrode portions and a substrate, preventing performance failures due to insufficient insulation. This innovation allows for narrower distances between electrode portions, which is essential for obtaining high-definition radiation images. The element comprises multiple electrode portions and an insulating portion situated between them on a substrate made of a compound semiconductor crystal, specifically cadmium telluride or cadmium zinc telluride. An intermediate layer of tellurium oxide is present between each electrode portion and the substrate, with a maximum thickness of 30 nm on the upper portion of the insulating portion.

Another notable patent is for a cadmium zinc telluride (CdZnTe) single crystal. This crystal features a main surface with a high mobility lifetime product across a wide range. The main surface has an area of 100 mm or more, with at least 50% of the regions exhibiting a mobility lifetime product of 1.0×10 cm/V or more. Yamada's method for producing this single crystal effectively enhances its properties.

Career Highlights

Kohei Yamada is currently employed at JX Nippon Mining & Metals Corporation, where he continues to innovate in the field of semiconductor technology. His work has been instrumental in advancing the capabilities of radiation detection systems.

Collaborations

Yamada collaborates with notable colleagues, including Koji Murakami and Kenya Itani, who contribute to his research and development efforts.

Conclusion

Kohei Yamada's contributions to radiation detection technology exemplify his commitment to innovation and excellence. His patents reflect a deep understanding of semiconductor materials and their applications in enhancing radiation detection systems.