Background:
Metal chalcogenide nanomaterials represent an important group of efficient
materials, in which the subtle variations in shape, size and phase of nano-powders resulted in physical
properties (e.g., electronic and optical) differing from their bulk counterparts, which makes them
useful materials for various technological devices.
Objective:
Synthesis and growth of chalcogenide nano powders from novel single source molecular
precursors (i.e., Cd(II) bis-(aminopropane) selenide, Cd(II) bis-(aminoethane) telluride) for the production
of cadmium chalcogenide (CdE, E= Se/Te) at nano scale.
Method:
Single source molecular precursor inserted in quinoline, acting as a coordinating solvent at
suitable temperature, yielded vacuum dried powders of CdSe and CdTe nanomaterials.
Results:
The average particle size was estimated as CdSe ≈ 3 nm, and CdTe ≈ 29 nm from powder
X-ray diffraction pattern of synthesized nanoparticles. The produced nanomaterials possess optical
properties and calculated energy band gap of nanoparticles as CdTe = 5.2 eV and CdSe = 4.0 eV
from UV-Visible spectra.
Conclusion:
The economical, harmless single source molecular method may be a striking technique
to fabricate metal chalcogenide nanoparticles.
Synthesis of nanostructured powders and thin films of iron sulfide from molecular precursors
