Abstract:
The luminescence spectra and excitation lumines- cence spectra in the above-barrier energy region of the CdTe/Cd$_{0.6}$Mg$_{0.4}$Te heterostructure with a single quantum well at temperatures of 5–100 K have been studied. It has been shown that the luminescence at the maximum of the barrier band is determined by the relaxation of excitons over the entire temperature range, while free carriers contribute significantly to the luminescence of the quantum well and the low-energy side of the barrier band at low temperatures.
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