Effect of Thermal Annealing Time on The Optical Characteristics of CuO Thin Films

Authors : Reşit ÖZMENTEŞ

Pages : 176-182

View : 11 | Download : 5

Publication Date : 2019-12-31

Article Type : Research Paper

Abstract :In this study, annealing time effect has been investigated on the optical characteristics of copper oxide thin films prepared by spray method.   X-ray diffraction insert ignore into journalissuearticles values(XRD); measurements determined that the copper oxide films, produced on glass substrate using the 0.1 M copper-II-acetate monohydrate [Cuinsert ignore into journalissuearticles values(CH 3 COO); 2 H 2 O] precursor solution at 250 °C in the CuO tenorite phase.   The films produced at 250 o C subsequently annealed at 450 o C for half an hour intervals and as optically have been characterized. When the film annealed at 450 o C; it was observed that after the first annealing process the film transmittance and band gap energy were decreased, longer annealing process did not change significantly the optical transmittance and the band gap of CuO film. Optical band gap values of film obtained from transmittance measurements; for as deposited and   0.5 h, 1 h, 1.5 h, 2 h and 2.5 h annealed films; 1.71 eV, 1.60 eV, 1.59 eV, 1.61 eV, 1.58 eV, 1.58 eV were calculated respectively.
Keywords : CuO, Thin, Film, Optical, Thermal, time, copper, oxide