Hybrid nanostructures based on the conducting polymers incorporated to porous silicon matrix

Abstract

An influence of conducting polymer on the structure, morphology and luminescent characteristics of porous silicon – conducting polymer hybrid nanostructures has been studied. The incorporation of conducting polymers such as polyphenylacetylene (PPA), polyepoxypropyle carbazole, polyparaphenylene (PPP), polyaniline to porous silicon matrix was provided by magnetron deposition, electropolymerization and dip coating. The hybrid layers were studied by FT-IR spectroscopy, scanning electron and atom force microscopy and examined on the ability to photo- and cathode luminescence (CL). For the hybrid nanostructured layers based on PPA and PPP a significant increasing in the luminescence intensity has been found. According to FT-IR spectroscopy the interaction between polymer functional groups and porous silicon surface takes a place. Probably it leads to decreasing a rate of non-radiation surface recombination and to increasing a radiation component of recombination as well as increasing in the CL total intensity.