Effect of Doping on the Morphological, Micro-Structural and Optical Properties of Cd1–(x + y)MnxFeyO Thin Films

Transition metal doped cadmium oxide (Cd 1–( x + y ) Mn x Fe y O) thin films with high purity were prepared using the spray pyrolysis method. The morphological analyses were done using scanning electron microscope and atomic force microscope. The X-ray diffraction studies indicated that the structure of cadmium oxide lattice remains same even after mono-doping (Cd 1– x Mn x O and Cd 1– y Fe y O) and co-doping (Cd 1–( x + y ) Mn x Fe y O). The micro-structural properties such as crystallite size, dislocation density, strain and texture coefficient depends on the nature of doping. The Mn and Fe co-doped CdO films (Cd 1–( x + y ) Mn x Fe y O) have low transmittance, low band gap, high n-type charge carrier concentration and high refractive index than mono-doped CdO films. The intensity of luminescence also depends on the nature of doping.