Abstract
Zinc oxide films were deposited on heated glass substrates at different substrate temperature 450°C and 500°C. After the deposition, some samples were heat treated at 500°C for one hour in air and some samples in vacuum for one hour at the same temperature. Absorbance analysis revealed that as deposited samples and post heat treated samples are showing intense absorption near 1.5eV apart from that corresponding to band gap of ZnO. The absorption coefficient variation with incident energy for the samples annealed in vacuum after deposition at 450° suggested the presence of oxygen vacancy as the native defect for the absorption near 1.5eV. The absorption energy for the samples obtained from (αhν)2 vs energy plot suggested that same kind of defect may be present in all the samples and is around 1.53eV.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
More From: IOP Conference Series: Materials Science and Engineering
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.