Elecrocemical formation of semiconductor nanocrystalline thin films from complex electrolyts

Abstract

The present paper deals with the influence of 2, 2/-dipyridil and 1,10-fenantroline heterocyclic amines on electrochemical formation of nanocrystalline thin-film of CdTe, Cu2Se, CuInSe2 semi-conductor compounds are established. Used heterocyclic amines are waterproof surface-active substances which are specifically adsorbed on an electrode surface at the expense of waterproof interactions and π-eleсtrons of aromatic rings. As a result of it the change of superficial activity of protondonors without change of рН in the volume of solution are observed. The heterocyclic amines form thermodinamic steady complexes with Cd (II) and In (III) ions and stabilize Cu (I) ions. Changing concentration of heterocyclic amines at electrochemical formation of CdTe, Cu2Se, CuInSe2 semiconductor thin films with the necessary qualitative and quantitative characteristics are received. The size of semiconductor compounds particles has made 30–50 Å.