Abstract
GaSe nanoparticles obtained by direct interaction of laser radiation with Ga element and SeO2 solution were experimentally investigated. A pulsed Nd:YAG laser with a duration of 10 ns and an energy of 135 mJ per pulse was used as the radiation source. The formation of nanoparticles with diameters ranging from 2 to 25 nm was observed in the colloidal solution. By X-ray diffraction analysis it was found that the crystal structure of the nanoparticles is the same as that of the bulk material (hexagonal). It is shown that the photoluminescence emission of the obtained nanoparticles has a dark orange color and is associated with the radiative recombination of free excitons.
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