The present book deals with the phenomena of preparation, Synthesis, characterization, study of optical and electrical properties of Semiconductor Nanoparticles. Semiconductor Nanomaterials (CdS, ZnO, CdSe, ZnS, ZnSe, CdO) were prepared by chemical synthesis method and characterized by using XRD, UV-VIS, SEM, TEM technique. Optical and electrical properties of the as prepared nanomaterials were studied under various parameters such as frequency, time...