a Horizon 2020 FET -Open project
Towards a SiGe nanolaser

Light emission from Hexagonal SiGe

Hexagonal SiGe is a direct bandgap semiconductor for germanium compositions above 70%. 
We indeed observe strong light emission from Hex-SiGe in this compostional range. Moreover, the team at the Technical University of Munich observed indications for optical gain in hexagonal Ge.