Ultrasound Assisted Synthesis and Characterization of Mn Doped CdS Nanocrystalline Zinc-Blendes

Cd1-xmnxs (x = 0, 0.1, 0.2) nanoparticles, prepared by coprecipitation method under ultrasonic irradiation, were studied by means of x-ray diffraction, scanning electron microscopy, ftir and uv-vis spectroscopy measurements. the average particle size of nanoparticles from the scanning electron microscopy image is about 20-30 nm. results show that partial substitution of cd by mn leads to a reduction in lattice parameters and enhancement of band gap energy. this is attributed to the nanometric grain size and quantum confinement effects. the particle size is calculated to be around 2 nm that is almost in agreement with the crystallite size estimated from the xrd result.