Effect of Al-doping on optical and electrical properties of spray pyrolytic nano-crystalline CdO thin films
CdO and Al-doped CdO nano-crystalline thin films have been prepared on glass at 300° C
substrate temperature by spray pyrolysis. The films are highly crystalline with grain size (18–
32nm) and found to be cubic structure with lattice constant averaged to 0.46877 nm. Al-
doping increased the optical transmission of the film substantially. Direct band gap energy of
CdO is 2.49 eV which decreased with increasing Al-doping. The refractive index and
dielectric constant varies with photon energy and concentration of Al as well. The …
substrate temperature by spray pyrolysis. The films are highly crystalline with grain size (18–
32nm) and found to be cubic structure with lattice constant averaged to 0.46877 nm. Al-
doping increased the optical transmission of the film substantially. Direct band gap energy of
CdO is 2.49 eV which decreased with increasing Al-doping. The refractive index and
dielectric constant varies with photon energy and concentration of Al as well. The …