Abstract
Indium doped ZnO (In-ZnO) nanoparticles by a sol-gel processing technique has been synthesized for a concentration of In ranging from 0 to 5%. The structural and optical properties of ZnO and In-ZnO nanoparticles were characterized by different techniques. The structural study confirms the presence of hexagonal wurtzite phase and indicates the indium incorporation of In3+ ions at the Zn2+ sites. However, the optical study was shown a high absorption in the UV range and an important reflectance in the visible range. The optical band gap of In-ZnO samples were varied between 3.16 and 3.22 eV. The aim of this work is to study the effect of indium doping on the structural, morphological and optical properties of ZnO nanoparticles.