CdS nanocrystals macroporous silicon макропористий кремній нанокристали CdS нанокристаллы CdS Grimme’ dispersion correction SiO2 nanocoatings bilateral structures carbon nanotubes catalysis composite materials density functional theory method dihydrogen doping with N and B-atoms electrical conductivity graphene-like matrix hydrogen peroxide local electric fields macroporous silicon substrates multiwall carbon nanotubes nanocoatings nitrogen-containing carbon nanotubes oxidized macroporous silicon photoluminescence polyethyleneimine polyvinyl butyral quasi-guided and photonic modes solar cell technology sorption thermal conductivity