Preparation various morphology of PbTe via a facile hydrothermal method

Different morphologies of PbTe nanostructures were synthesized via a facile hydrothermal reaction. Products were achieved in a relatively short time and low temperature.The effects of different parameters such as precursor, temperature, reducing agent and reaction time and presence of surfactant on themorphology of the products were investigated. Nanostructures were characterized using X-ray diffraction (XRD), scanning electronmicroscopy (SEM), transmission electronmicroscopy (TEM), Fourier transform infrared (FT-IR) techniques and X-ray energy dispersive spectroscopy (EDS). Asobservations suggest the as-obtained PbTe nanoparticles exhibit a strong PL peak at room temperature that might be ascribed to the highlevel transition in the PbTe semiconductor.in other hand optical absorption spectrum of PbTe nanostructures exhibit an extremeblue-shift, which is attributed to the quantum confinement of charge carriers in the nanostructures

کلیدواژه ها:

PbTe ، Hydrotheraml method ، Nanostructuers