Patent ID: 8329138

Claim:
A process for the manufacture of nanostructures each having the formula A 1−x -B x -chalcognide wherein A is a metal or transition metal or an alloy of one metals or transition metals including at least one of the following: Mo, W, Re, Ti, Zr, Hf, Nb, Ta, Pt, Ru, Rh, In, Ga, InS, InSe, GaS, GaSe, WMo, TiW; B is a metal or transition metal selected from the following: Si, Nb, Ta, W, Mo, Sc, Y, La, Hf, Ir, Mn, Ru, Re, Os, V, Au, Rh, Pd, Cr, Co, Fe, Ni; and x≦0.3, provided that within said nanostructure A is not zero and A≠B; and having B and B-chalcognide doped within the A 1−x -chalcognide; the process comprising: providing A-Y 1 and B-Y 2 compositions each in vapor phase, Y 1 and Y 2 being the same or different halogens selected from chlorine, bromine or iodine; flowing said A-Y 1 and B-Y 2 vapors together with a reducing agent carrying forming gas into a reaction chamber where they meet an opposite direction flow of a chalcognide carrying reacting gas, thereby causing occurrence of reduction of the A and B metals or transition metals followed by a reaction with the chalcognide carrying reacting gas resulting in the formation of said nanostructures.