Abstract
Undoped and Mn-doped TiO2 thin films have been prepared by sol–gel dip-coating technique on glass and silicon substrates. X-ray diffraction studies showed that both TiO2 and Mn-doped TiO2 thin films are of anatase phase with (101) as preferential orientation. All films exhibit high transparency ([Formula: see text]80%) over the visible range. The optical bandgap decreases from 3.66[Formula: see text]eV to 3.52[Formula: see text]eV due to the extent of electronic states introduced by doping. Infrared transmission spectra showed Ti–O (625[Formula: see text]cm[Formula: see text]) and Ti–O–Ti (495–436[Formula: see text]cm[Formula: see text]) bands. Thermal analysis revealed endothermic reactions between 94∘C and 110∘C and exothermic reactions between 406∘C and 443∘C. The Nyquist plots depicted that equivalent circuit of the films is an [Formula: see text] parallel. The resistance [Formula: see text] decreases while the capacitance [Formula: see text] increases with Mn-doping.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
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.