Optical characterization of Fe^3+ doped CdS nanoparticles synthesized by wet-chemical route

Fe^3+ doped CdS nanoparticles using Mercaptoethanol as a capping agent were prepared by colloidal wet-chemical method. UV-VIS spectra show that Fe-doping can effectively tune energy band structure, i.e. a large blue shift (∼30 nm) with increasing Fe concentration. PL measurement of doped CdS nanoparticles shows an additional emission band at ∼532 nm, which can be due to radiative transition of dopant level to ground state. X-ray diffraction patterns studies revealed cubic crystal phase. TEM micrographs show a spherical shape and nearly well distribution with an average particle size of ∼4 nm.