The influence of thermal annealing on the optical properties of nanocrystalline zinc sulfide films

The influence of thermal annealing on the photoluminescence, electroluminescence, and the transmission and reflection spectra in nanocrystalline zinc sulfide films has been studied. All the samples exhibit a broad emission band, the intensity of which depends on the annealing temperature. It is shown that luminophors, the crystal lattice of which includes imperfections that appeared in the transition from wurtzite to sphalerite, feature the highest emission intensity.