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arXiv · 1802.02886

Characterization of spin coated Zn doped cupric oxide thin films

P. Samarasekara·P. G. D. C. K. Karunarathna·H. P. Weeramuni·C. A. N. Fernando
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Abstract

Thin films of Zn2+ doped cupric oxide (CuO) were synthesized using spin coating technique starting from a solution with Cu and Zn. The speed of spin coating and time duration were varied to fabricate a film with required uniform thickness. Samples were subsequently annealed in air at different annealing temperatures to crystallize the phase of CuO. Doping concentration of Zn2+ was varied up to weight percentage of 10%. Structural properties of samples were determined using X-ray diffraction technique. Particle size, dislocation density and strain at different doping concentrations were determined using XRD patterns. 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+. The optical band gap decreases with increase of particle size. The particle size, dislocation density, strain and optical band gap have a turning point close to the doping concentration of 6%.

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P. Samarasekara, P. G. D. C. K. Karunarathna, H. P. Weeramuni, C. A. N. Fernando. 2018-02-04. Characterization of spin coated Zn doped cupric oxide thin films. https://arxiv.org/abs/1802.02886

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