Erbium Implanted in III–V Materials

Abstract
Erbium impurities were implanted in binary, ternary and quaternary III–V semiconductors. The main erbium emission centered at 1.54 µm is an invariant for III–V semiconductors having a band gap energy higher than the intrashell transition energy of Er 4f electrons (0.805 eV). The erbium emission is independent of the emission temperature from 2 K to 300 K.