九州大学 エネルギー基盤技術国際教育研究センター

Renewable Energy Development Division – Koichi KAKIMOTO –

High-Density Utilization of Renewable Energy Technology

Professor

Koichi KAKIMOTO

Specialization

Crystal Growth

Affiliation

Research Institute for Applied Mechanics

Research Topics

  • High efficiency silicon solar cells
  • SiC for power devices
  • Sapphire for blue LEDs
  • Crystal growth fundamentals
  • Large scale simulation

Research Outline

Our research targets are understanding and control of growth dynamics and mechanism of semiconductors such as Si, SiC, GaN, AlN, InGaN and AlGaN. We investigate how silicon single crystals for LSIs and solar cells grow through large scale numerical modeling. Growth mechanisms of these materials and graphene/SiC are also studied. The crystal growth dynamics section focuses on both the MACROSCOPIC phenomena using continuum theory and the MICROSCOPIC phenomena using molecular dynamics, ab initio calculations and Monte Carlo simulation. We also perform solid source AlN solution growth and analyse the crystalline quality of the materials.

Temperature distribution in a sublimation furnace

Temperature distribution in a sublimation furnace

Temperature distribution in a SiC sublimation furnace by using a home-made computer code.

Dislocation distribution in a SiC crystal

Dislocation distribution in a SiC crystal

Dislocation distribution in a SiC crystal by using a home-made computer code.