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Thin films of Zn2+ doped cupric oxide (CuO) were synthesized using spincoating technique starting from a solution with Cu and Zn. The speed of spincoating and time duration were varied to fabricate a film with required uniformthickness. Samples were subsequently annealed in air at different annealingtemperatures to crystallize the phase of CuO. Doping concentration of Zn2+ wasvaried up to weight percentage of 10%. Structural properties of samples weredetermined using X-ray diffraction technique. Particle size, dislocationdensity and strain at different doping concentrations were determined using XRDpatterns. Optical properties were measured by means of UV/Vis spectrometer.Optical band gap of CuO could be tailored by doping a trace amount of Zn2+. Theoptical band gap decreases with increase of particle size. The particle size,dislocation density, strain and optical band gap have a turning point close tothe doping concentration of 6%.

Characterization of spin coated Zn doped cupric oxide thin films