Abstract
Polymer film nanocomposites based on cellulose and bicomponent mixtures of semiconducting p- and n-sulfides of univalent copper and cadmium were obtained by the in situ method. The content of the disperse phase in the as-prepared compositions was equal to similar to50-60 vol %. The synthesis of such bilayered compositions with a well-defined CdS/Cu2S boundary involves two principal stages: the formation of a CdS nanophase (via in situ reaction between Na2S and cadmium salt sorbed in the polymer matrix) and the formation of a Cu2S nanophase via the topochemical substitution of Cd2+ by Cu+ ions in the cellulose-CdS compositions). The structure of highly filled compositions is characterized by the presence of disperse phase particles with dimensions of 80-90 nm which are formed via the coagulation of smaller (primary) particles with dimensions of similar to10 nm. The as-prepared bilayered compositions may be used for the preparation of polymer-based solar batteries (systems with a p-n-heterotransition).