STUDY OF THE EFFECT OF NANOPARTICLE SIZE ON THE DIELECTRIC CONSTANT AND CONCENTRATION OF CHARGE CARRIERS OF Si AND CdS MATERIALS

In this research, the effect of nanoparticle size on the dielectric constant and the concentration of charge carriers in silicon (Si) material and cadmium sulfide (CdS) is studied. These properties are studied by using a computer program in MATLAB version (17). This program depends on the Brus model and the characteristic matrix theory. The results indicate that the dielectric constant increases with the increase in the granular size of the material and when the granular size decreases the dielectric constant decreases. As for the concentration of the charge carriers, we notice that it decreases with the decrease of the granular size of the material.