In the article we introduce the experiment of the photostimulation effect in the tunneling conductivity of free-standing thin C-Au films. We observe a sharp increase of the conductivity of hybrid film due to the electromagnetic exciting at the frequencies which are close to the plasmon resonance of gold nanoparticles. The use of carbyne threads as a stabilizing matrix makes it possible to obtain free-standing thin films that demonstrate a good structural stability. The tunnel current-voltage measurements demonstrate a strong dependence of the current value on the intensity of green laser radiation used to photostimulate thin C-Au in area of the measuring experiment.
The formation of macroscale carbon structures characterised by an sp-sp2-hybridization is realised by self-assembly in colloidal solutions under an effect of laser irradiation and electromagnetic fields. The sponge-like morphology, sculptured with gold nanoparticles (NPs) was revealed by Scanning Electron Microscopy (SEM) imaging. Full structural and defect characterization of the self-assembled sponges was provided using the micro-Raman spectroscopic technique. The synthesized clusters manifest themselves in the presence of a strong spectral band in the visible range of the photoluminescence spectra that is quite unusual for ordered sp2-carbon systems.
The results of experiments on obtaining and studying the electrical properties of semiconductor films of PbTe are presented, and a model of current-voltage characteristics in the percolation approximation is proposed. The simulation performed qualitatively correctly reflects the current-voltage characteristics of the obtained films.
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