Mikroskop camları üzerinde spin kaplama yöntemiyle üretilmiş ZnO ince filmlerine tavlama sıcaklık ve süresinin etkileri

In this study, ZnO thin films on amorphous microscope glasses were fabricated using the spin coating method and annealed at temperatures ranging from 350 o C to 850 o C. Annealings have been performedat these temperatures in 50o C increaments and for two annealing durations (0.5 and 8 hours). XRD, SEM and UV-VIS spectra of all the samples have been given. Optical and structural properties of the produced films have been evaluated. The sample annealed at o C for eight hours was crystallized in only one (100) direction. Annealing at 800 o C and 850 o C created new phases related to SiOand ZnSiO , respectively. It has been found that the annealing temperature and duration generally increased the ZnO nanostructures’ diameter. The UV-VIS spectra of the samples for moderate temperatures (350-600 o C) had an absorption band at 370 nm (3.36eV), whereas these peaks disappeared after 650 o C annealing, producing a new absorption peak situated at 290 nm which could be attributed to the SiO phase. In case of the sample annealed at o C for 8 hours, SiO absorption peak has 10 nm redshift.