To improve the performance of today’s electron devices dramatically, it is essential to incorporate new device materials with higher functionality. In the electron device operations, the carrier density change in semiconductors occurs in the near-interface region within several or tens of nanometers of the interface between the semiconductor and the insulating layer. Therefore, in order to fully utilize new device materials, it is essential to control the atomic arrangement and physical properties in this nano-region near the interface, by designing appropriate fabrication processes based on the deep understanding of the properties of those materials. For example, it is contributing to an energy-saving society to signicantly improve the efciency of power devices for electric power conversion, by fully utilizing wide-gap semiconductors instead of Si as the new device material. The materials showing superior dielectric properties such as ferroelectricity in nanometer-thick lms, are expected to be applied to new non-volatile memory technology that will support the next-generation computing.

KOJI KITA LAB. research



KOJI KITA LAB. research




What is the most meaningful study to develop the technologies for the future society? That was the reason why I started to learn materials science. In the world of electron devices, “things we hope to do" are changing to “things we can do” every day.

I majored in chemical engineering because learning chemistry seemed necessary to understand the technology for the benet of our society, such as the technologies for environmental conservation and efcient usage of energy. After graduation, I started to work with a professor leading the cutting-edge research on electron devices with in-depth knowledge of physics. While I kept struggling to pursue his many creative ideas, I nally found my way to come to where I am today. Today materials science provides one of the keys for develop-ing advanced electron devices. In this research eld, specialists in materials science are not the majority, so I always feel I am responsible for the role to clarify the technological issues in device physics from a perspective of materials science. In those researches, we cannot nd a solution without repeating trials to test our various ideas over and over again. That is how future technology develops. We should enjoy such struggling to keep moving the technology forward.


Professor Koji Kita

Professor Koji Kita

2001 Ph. D. (Eng.), Department of Chemical System Engineering, The University of Tokyo

2001 Research Associate, Department of Materials Engineering, The University of Tokyo

2007 Lecturer, Department of Materials Engineering, The University of Tokyo

2010 Associate Professor, Department of Materials Engineering, The University of Tokyo

2022 Professor, Department of Advanced Materials Science, The University of Tokyo

Visiting laboratory

  • +81-4-7136-5456
  • Koji Kita Lab.,
  • Department Of Advanced Materials Science,
  • Graduate School of Frontier Sciences,
  • The University of Tokyo
  • Kashiwanoha 5-1-5,
  • Kashiwa,Chiba 277-8561, Japan