The optical properties of a thin layer of the semiconductor germanium-tin (GeSn) sandwiched between barriers of silicon-germanium-tin (SiGeSn), a structure known as a quantum well, have been studied with a focus on improving lasers and photodetectors. But what would happen to an electrical charge passing through the nanometer-thick germanium-tin quantum well?
Originally published by Tech Xplore https://techxplore.com/hi-tech-news/