Local distribution of deep centers in GaP studied by infrared cathodoluminescence

Abstract
Near-infrared cathodoluminescence (CL) in the scanning electron microscope has been used to characterize GaP:S. Spectra of as-grown crystals show a broadband at about 1240 nm, probably related to PGa antisite defects. This emission has been found to be higher at dislocations giving a CL image opposite to the visible CL image.