Si Nanopillar/SiGe Composite Structure for Thermally Managed Nano-devices

Abstract

We have demonstrated a thermally managed Si nanopillar/SiGe composite structure. Our fabricated defect-free Si nanopillar channel structure showed a 1/100 times lower thermal conductivity than Si bulk thanks to the control of the phonon transports. The results of thermal conductivity measurements clarified that the nanopillar structure could eliminate electron-phonon scattering. As such, this structure represents a promising solution for advanced CMOS technologies.