Efficient LPE-grown Inx Ga1 −x As LEDs at 1–1.1-μm wavelengths

Abstract
We report the growth and fabrication of LPE multilayer Inx Ga1 −x As homojunction LEDs. Junction edge emission in the 1.0–1.1‐μm wavelength range was obtained with external efficiencies of ∼1%. An important feature of the device structure is the incorporation of simple stepwise compositional grading for lattice matching of the substrate and p‐n junction layers.