Single-Source Molecular Precursor for Synthesis of Copper Sulfide Nanostructures

摘要

As a new precursor, [bis(thiosemicarbazide)copper(II)]chloride; ([Cu(TSC)2]Cl2), complex was used in thermal decomposition process for the synthesis of Cu2S nanocrystals. The steric hindrance of the precursor raises the need of using co-surfactant, therefore oleylamine (C18H37N) and triphenylphosphine (C18H15P) were applied as solvent and surfactant of the reaction. CuS nanocrystals were synthesized via hydrothermal decomposition of [bis(thiosemicarbazide) copper(II)] without any surfactant. The products were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, Fourier transform infrared spectroscopy, and photoluminescence spectroscopy. Synthesized copper sulfide nanostructures have average size of 20–50 nm. Finally, optical properties of the products were examined and investigated by PL spectra.