Lead iodide is one of the most important materials used in x-ray detectors. It is prepared from the chemical reaction of lead nitrate Pb(NO3)2 with potassium iodide (KI). Undoped and Zn doped Lead iodide (PbI2) nanostructure was successfully prepared by thermal evaporation method on a glass substrate at room temperature. Recently, progress has been made on the synthesis, physical and chemical characterization of both theoretical and experimental studies within a range less than 100 nm that exhibits size-dependent properties. A quite good quantity of research papers have been published on PbI2 within the past decades. New fundamental research is paralleled with original and inspired potential applications,