Concentrations in weight percent (5-25 wt%) of TiO 2 films used to optimize the film formation. The TiO 2 films on glass substrates successfully obtained by spin-coating process using TiO 2 nanopowder as precursor. Ultraviolet-Visible (UV-Vis), Scanning Electron Microscopy (SEM) equipped with Electron Diffraction X-ray (EDX) and X-ray Diffractometer (XRD) techniques used to characterize the films. The result of electron transport material (TiO 2) showed that film prepared from 15 wt% of TiO 2 solution and annealed at 450 has highest transmittance at visible light region with indirect optical band gap of 3.24 eV which corresponds to wavelength of 382 nm whereas 20 wt% has indirect band gap of 2.99 nm equivalent to 414.7 nm. The chemical analysis from Electron Diffraction Spectroscopy (EDS) of the material shows titanium and oxygen present at L and K-shells, respectively. The sample crystallized with preferred orientation at (101) from XRD analysis.