Electroluminescence and Lasing Action in GaAsxP1−x

Abstract
The electroluminescence of Zn diffused diodes was studied in forward and reverse bias. Emission spectra obtained for forward biasing showed a near‐edge as well as a low‐energy line. In the composition range x>0.55, where the lowest conduction band minimum is at k=0, most photons are emitted in the near‐edge line. Lasing action could be observed in this range, and the shortest wavelength where stimulated emission was obtained at 77°K was 6380 Å. For xxx=0.55 when x is decreased. The efficiency of the reverse bias emission is independent of composition.