Cathodic electrodeposition of PbTe from acidic water solutions containing T
c(IV), Pb(II) and Cd(II) was investigated. It was found that [100] oriented
growth of PbTc crystallites takes place in certain concentration range of
Pb(II) and Cd(II). Electrosynthesis was performed by UPD of Pb-ad and catho
dic reduction of Tc(IV). It was established by CVA method that UPD of Cd-ad
on Te atoms also takes place at PbTe electrodeposition potential E = -0.3
V (Ag/AgCl). Adsorption of Pb-ad and Cd-ad is irreversible due to formation
of chemical bonds Pb-ad-Te and Cd-ad-Te. It was presumed that mechanism of
Cd(II) effect consists in selective adsorption of Cd-ad on faces of PbTc c
rystals and inhibition of Pb-ad UPD.