Spectroscopic, structural and morphological properties of spin coated Zn: TiO2 thin films

Prathvi, . and Bhandarkar, Asha S and Akshay Kumar, Kompa and Kekuda, Dhananjaya and Murari, M S and Telenkov, M P and Nagaraja, K K and Rao, Mohan K (2021) Spectroscopic, structural and morphological properties of spin coated Zn: TiO2 thin films. Surfaces and Interfaces, 23. ISSN 2468-0230

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Abstract

Herein we report on the spin coated thin films of Zn-doped TiO2 on glass substrates with various Zn concentrations (2 ‒8 at %). The structural, chemical, optical and morphological properties were investigated using X-ray diffraction (XRD), Raman spectroscopy, photoluminescence (PL), UV-Visible spectroscopy, X-ray Photoelectron Spectroscopy (XPS) and Field Emission Scanning Electron Microscopy (FESEM). Studies by XRD and Raman confirmed the existence of the anatase phase. With increasing Zn2+ concentration, the crystallite size was found to decrease. FESEM studies reveal the homogenous distribution of grains in the films. UV-Visible spectra showed higher light absorption with doping, and the bandgap decreased from 3.47 eV to 3.36 eV. The Urbach energy was found to increase on doping. XPS spectra revealed the successful incorporation of Zn2+ ion into TiO2 lattice.

Item Type: Article
Uncontrolled Keywords: Zn doped TiO2 XPS Raman Photoluminescence
Subjects: Engineering > MIT Manipal > Physics
Depositing User: MIT Library
Date Deposited: 05 Oct 2021 09:03
Last Modified: 05 Oct 2021 09:03
URI: http://eprints.manipal.edu/id/eprint/157502

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