KUME-Tetsuji

KUME Tetsuji

Title Professor
Department Department of Electrical, Electronic and Computer Engineering
Course Electrical and Electronic Course

Research fields

Silicon is ubiquitous in semiconductor technology. The diamond structure Si (d-Si) is the most stable and is an indirect bandgap semiconductor, which is not suitable for light emission and light absorption. Allotropes of Si are still important and attractive subjects from industrial as well as fundamental point of view. Si clathrate is an allotrope of Si (allo-Si) which possesses a direct bandgap of 1.8 eV, which is more applicable to photoelectric devices. However, the device based on the direct-gap-allo-Si has not been achieved. The aim of our research is to investigate and develop such the new materials of group IV elements as well as Si.

The students joining us will get opportunities to make, characterize, and develop various novel materials and to discover new phenomena through their investigation. Their experience through the investigation of new materials will help them to solve and overcome issues encountered in their future work.

Crystal structure of Si clathrete (type II)

Research Keywords

Solid state physics
Clathrate
Group IV element
High pressure

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