Articles written in Pramana – Journal of Physics
Volume 95 All articles Published: 4 August 2021 Article ID 0132 Research Article
In the framework of this study, pure and Li-doped TiO$_2$ (0.5, 1.5, 2.5 at.%) thin film samples were synthesised via sol–gel spin coating method. The structural, morphological and optical properties were examined by using X-ray diffraction, scanning electron microscopy (SEM) and UV–Vis spectroscopy respectively. XRD pattern reveals the polycrystalline nature of Li-doped TiO$_2$ thin films with anatase crystal phase. The average crystallite sizes were found to be in the range of 19–23 nm. The energy-dispersive X-ray spectroscopy (EDS) demonstrates the oxidation states of Ti, O and Li in the deposited thin films. The optical band gap of TiO$_2$ thin films was varied from 3.15 to 3.26 eV on increasing Li doping. For the study of light emission properties of Li-doped TiO$_2$ thin films, the PL spectra were recorded in the wavelength range of 350–700 nm. The doping of Li on TiO$_2$ films show improved charge transport properties which can be used in optoelectronics and energy storage devices.
Volume 95, 2021
Continuous Article Publishing mode
Click here for Editorial Note on CAP Mode