ИСТИНА

The chemical approach based on bottom up methods to obtain different material nanopowders was actively developed in the last years. It was expected that influence of accelerated electrons together with subsequent thermal treatment gave a possibility to change in a wide range both surface and bulk properties of nanoparticles due to non-equilibrium charge carrier generation and atom displacement effects. Structure change was possible as well. Some types of radiation processing are good tools for the controlled formation of stable bulk defects in the material and changes in the material surface properties. At the same time material and structure linear electron accelerator processing in the 3-10 MeV range is the best approach due to experiment speed, safety, irradiation regime reproducibility and cost. The goal of the present work is to study synthesis as well as radiation condition influence on the properties of chemically obtained silicon nanosuspensions and nanopowders with nitrogen heterocyclic carbene – NHC, butyl and perfluorinated butyl as stabilizing ligands. The corresponding results were obtained for the 7 MeV electron energy. The difference in luminescence spectra before and after high-energy electron treatment of silicon 2 nm diameter nanoparticles covered with NHC, is discussed.