GERMANIUM LIGHT-EMITTING ELEMENT

摘要

Disclosed is a germanium light-emitting element which is produced using germanium having low threading dislocation density and can emit light with high efficiency. A germanium laser diode having a high-quality germanium light-emitting layer can be provided using germanium formed on silicon dioxide. A germanium laser diode having carrier density higher than the carrier density limit that can be injected by conventional n-type germanium can be provided using silicon as an n-type electrode.