Open AccessOptical Investigation of TiO2/Graphene Oxide Thinfilm Prepared by Spin Coating Technique
Author(s) -
Ali H. A. Jalaukhan
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/871/1/012087
Subject(s) - graphene , oxide , raman spectroscopy , spin coating , materials science , fourier transform infrared spectroscopy , graphene oxide paper , band gap , titanium dioxide , thin film , chemical engineering , coating , titanium oxide , nanotechnology , analytical chemistry (journal) , optoelectronics , optics , composite material , chemistry , organic chemistry , metallurgy , physics , engineering
Titanium dioxide/graphene oxide thin films with different concentrations of (0.0, 0.015, 0.030, 0.045 and 4.5 g/ml) graphene oxide were deposited on glass substrates at room temperature using spin coating method. Thin films were characterized by UV-Vis, FTIR and Raman spectroscopy. Presence of graphene oxide was confirmed with FTIR and Raman spectroscopy, too. The optical band gap of TiO 2 with the addition of graphene oxide layer initially decreases, but by increasing the concentration of graphene oxide, the optical band gap increases to 2.9eV.