Si-compatible quantum dot photonic devices

I-14: Si-compatible quantum dot photonic devices

T.K.S. Wong Division of Microelectronics, School of EEE

Abstract

Semiconductor quantum dots (QD) is the most exciting area of research in nanophotonics today. Due to their delta-function like density of states, the performance of photonic devices QD lasers and photodetectors are superior to their quantum well counterparts. Furthermore, QDs are becoming important for device applications in quantum cryptography and information processing. Although earlier QD research was based on compound semiconductors, there is interest in Ge and Si QD photonic devices due to their strong potential for integration with Si nanoelectronics, e.g. optical interconnects. We summarize recent work on growth and characterization of SiGe nanostructures and outline possible future QD device work.