The Influence of Natural and Stimulated Oxidation on Luminescent Properties of Silicon-Cellulose Nanocomposites

A composite has been developed on the basis of nanocrystalline cellulose and silicon nanoparticles, which exhibited more intense photoluminescence in the visible range of the spectrum than did nanoporous silicon. This may be related to the spatial separation of silicon nanoparticles and migration of excitation from their vicinity. The effect of temperature and gas-phase oxidation on the luminescent properties of the material indicates a high stability of the luminescent properties of the composite. Investigation of the charging effect of the nanocomposite allows silicon nanoparticles to be considered as centers of accumulation of the bulk electricity charge.