MISSION
&VISION
MISSION
Creating a next-generation semiconductor industry from Japan through the decommissioning of Fukushima Daiichi Nuclear Power Plant
In 2011, the Great East Japan Earthquake triggered a nuclear accident.
This led to the launch of a national project for nuclear decommissioning and accelerated research into diamond semiconductors capable of withstanding extreme environments.
Ookuma Diamond Device was established to bring this technology into practical use. We plan to build the world’s first diamond semiconductor manufacturing facility in 2026.
Diamond semiconductors are expected to be applied not only in nuclear decommissioning, but also in cutting-edge fields such as space, defense, and communications. Building on the technologies developed through decommissioning, our mission is to create the next generation of the semiconductor industry.

VISION
To contribute to the development of next-generation infrastructure and move human history one step forward.
- Enhance the safety of nuclear power and protect human lives.
- Propel space development one step further.
- Support the foundation of the next-generation information society and push beyond the limits of current technology.



VALUE
Here are the core values shared by our team,
united in the creation of a next-generation semiconductor industry.
EMBRACE CHALLENGES
EMBRACE CHALLENGES
Welcome challenges with a positive mindset. Even in uncertainty, keep moving forward.
THINK VISIONARY
THINK VISIONARY
Stay grounded in our mission to face national challenges. Choose your path with clarity and purpose.
RESPECT DIFFERENT PERSPECTIVES
RESPECT DIFFERENT PERSPECTIVES
Value differing opinions without clinging to your own. Seek truth through objectivity.
TAKE ANOTHER STEP FORWARD
TAKE ANOTHER STEP FORWARD
Never ignore a subtle discomfort. Take one more step without compromise — truth often lies just beyond hesitation.