Nanocomposite materials on the basis of semiconductor nanoparticles such as CdS are special interest for use in many
fields of a science and technique: optics, electrochemistry and optoelectronics. Non-linear optical properties of the
composite materials depend on a size, a shape and features of synthesis methods. The sample was investigated is a film
of 0.3 mm thickness. The size of nanoparticles (2.5 nm) was characterized by method of X-ray powder diffraction. The
green luminescence in 529 nm range is due to the radiative recombination of electron-hole pairs. The red luminescence
in 640 nm range is due to the radiative recombination of the exciton trapped in the nanocomposite defect states. We
observed the generation of the second harmonic in the range of 400 nm by pumping 790 nm laser pulses. The
luminescence intensity I in the range of 400 nm and 529 nm as a function of the excitation density energy P are
correspond to the function I ~ Pn. For the band at 529 nm range n =3 that correspond two- (400 nm) and three- (267 nm)
at 800 nm excitation.
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