Structural, morphological, and optical properties of TiO2 thin films synthesized by the electro phoretic deposition technique

Abstract

In this work, we report the structural, morphological, and optical properties of TiO2 thin films synthesized by the electro phoretic deposition technique. The TiO2 film was formed on a doped fluorine tin oxide (SnO2:F, i.e., FTO) layer and used as a photo electrode in a dye solar cell (DSC). Using spectroscopic ellipsometry measurements in the 200 to 800 nm wavelengths domain, we obtain a thickness of the TiO2 film in the range of 70 to 80 nm. Characterizations by X-ray diffraction and atomic force microscopy (AFM) show a polycrystalline film. In addition, AFM investigation shows no cracks in the formed layer. Using an ultraviolet–visible near-infrared spectrophotometer, we found that the transmittance of the TiO2 film in the visible domain reaches 75%. From the measured current–voltage or I-V characteristic under AM1.5 illumination of the formed DSC, we obtain an open circuit voltage Voc = 628 mV and a short circuit current Isc = 22.6 μA, where the surface of the formed cell is 3.14 cm2.

Reliable optical characterization of e-beam evaporated TiO2films deposited at different substrate temperatures

“…It is not surprising therefore, that many authors carry out research and publish results related to various aspects of TiO 2 amorphous films and crystalline structures. TiO 2 thin films can be produced by different deposition techniques including magnetron sputtering [4,5], RF sputtering [6,7], e-beam evaporation [8], reactive evaporation [3,9], plasma ion-assisted deposition [10], e-beam evaporation with ion-beam assistance [11,12], plasmatron sputtering [13], electrophoretic deposition [14], and solgel methods [15]. Some authors compare the properties of TiO 2 films produced by different methods (see, for example, [16,17]).…”

Influence of Mn-doping with CdS on the structural and optical properties of ZnS/CdS/TiO2 photoanodes

“…The theory of optical absorption gives the relationship between the absorption coefficient a and the incident photon energy by the relation [15] given in Eq. (7):…”

Effect of Aging Time on the Synthesis of Fe-doped TiO2 Thin Films by Spin Coating Method

“…Various methods has been reported to produce a thin layer of TiO 2 such as electrophoretic deposition [7], electrodeposition [8], doctor blades [9], RF sputtering [10], sol gel [11], dip-coating [12], spin coating, etc. In this study, we use a spin coating method to deposit TiO 2 layer.…”