Phonon replicas in the photoluminescence spectra of a direct gap AlxGa1−xAs alloy have been observed. The GaAs‐like transverse optical and longitudinal optical as well as AlAs‐like longitudinal optical modes were observed at the Γ‐point. We also observe what we believe to be the longitudinal acoustical phonons at the L‐point in the Brillouin zone.
Reynolds, D. C.,
Look, D. C.,
& Talwar, D. N.
(1995). Phonon Replicas in the Photoluminescence Emission of Alxga1-XAs Alloys. Applied Physics Letters, 66 (25), 3447-3449.