Effect of doping on Lead Iodide single crystals by gel technique

摘要

The undoped and doped Lead Iodide single crystals have been grown by gel technique. These crystals were characterized by X-ray diffraction, SEM, EDAX, Thermal analysis (TGA and DSC), IR, and Magnetic Properties. The observation on XRD shows that the peaks of the intensities goes on increasing as dopant concentrations increases. The IR and Thermal analysis, leads to the conclusion that there is no water molecules present in the crystals and the crystals is thermally stable. The inclusion of Cu as an impurity in lead iodide confirmed by EDAX. Convertion of diamagnetic lead iodide crystals into paramagnetic Cu-doped lead iodide crystals confirmed by magnetic susceptibility. The probable role of this doped element into the Lead Iodide crystals is explained along with surface structure of these crystals with the SEM.