Strained ZnSe nanostructures investigated by x-ray diffraction, atomic force microscopy, transmission electron microscopy and optical absorption and luminescence spectroscopy

摘要

Nanostructured ZnSe (Q-ZnSe) films synthesized by a wet chemical route have been studied. The evolution of particle size dependent strain, morphology and luminescence properties have been investigated, using x-ray diffraction, atomic force microscopy, transmission electron microscopy and optical absorption and luminescence spectroscopy. It is shown that the degree of structural orientation, self-organization and the nature of strain are dependent on particle size. Self-organized Q-ZnSe films with narrow particle size distribution have been successfully synthesized. Systematic particle size dependent blue shifts in the optical absorption edge and PL maxima have also been reported.