Electron structure of iron and cobalt nanocomposites on the basis of porous silicon

Abstract

Morphology and phase composition of porous silicon with electrochemically deposited Fe and Co particles as well as the particles of their mixtures were investigated by scanning electron microscopy (SEM) and X‐ray emission and absorption spectroscopy. Iron was shown to cover the surface of porous silicon while cobalt penetrates inside the pores in the form of nanoparticles. Iron Iron is present in the form of the phase of Fe2O3 with an admixture of FeO and Fe3O4. Cobalt forming nanoparticles is involved as metallic Co and Co2O3. Under co‐deposition of these metals from solution of their salts mixture cobalt favored penetration of iron inside the pores. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

Variations of the optical characteristics of nano-, meso-, and macroporous silicon with time

“…There has been considerable recent interest in the applications of various types of porous silicon in opto electronics, sensorics, and medicine in which porous silicon is a promising material for marker and drug delivery and similar applications [1][2][3][4][5]. A relatively wide range of the functional characteristics of porous silicon (visible luminescence, relatively high absorp tivity and reactivity, biocompatibility, and different sizes and morphology of pores) stimulates the study of the corresponding objects.…”