INFLUENCE OF DOMAIN SIZE ON OPTICAL-PROPERTIES OF ORDERED GAINP2

Using dark-field transmission electron microscopy images of ordered Ga InP samples, we show how the ordering domain size depends on the growt h temperature. Samples with different average domain sizes are compare d with regard to their photoluminescence (PL) and excitation spectra. We find a close correlation between the size of the ordered domains an d the relative intensity of the PL peak from band-band recombination c ompared with the rapidly shifting, below-band-gap luminescence emissio n. (C) 1996 American Institute of Physics.