Effect of Aging Time on the Synthesis of Fe-doped TiO2 Thin Films by Spin Coating Method
Abstract
The synthesis of Fe-doped TiO2 thin film using spin coating method was studied. Effects of aging time on the deposited thin film were investigated. Titanium butoxide (C16H36O4Ti) as a precursor solution was mixed with the FeCl3. Spin coating process was carried out on three types of precursor solution: (1) spin-coating process performed immediately after the precursor solution was made, (2) spin-coating process performed after solution was aged for 24 hours, (3) aged for 24 and (4) spin-coating after aging the precursor for 72 hours. Heating was carried out on the resulting thin film at temperature of 400 °C. The morphology of TiO2 layers was characterized using Scanning Electron Microscope (SEM) and Atomic Force Microscope (AFM). Elemental and phase composition of the films was determined using EDX and X-ray diffraction (XRD). We found that the best TiO2 layer is obtained when spin-coating process is done after aging the precursor for 72 hours. The layer shows a more uniform particle distribution on the substrate and a more monodisperse particle size dominated by the anatase phase.
References
[1] G. Liu, J. C. Yu, G. Q. M. Lu, and H.-M. Cheng, Crystal facet engineering of semiconductor photocatalysts: motivations, advances and unique properties, Chem Commun (Camb), 47, 6763–6783, (2011).
[2] A. A. Umar, M. YA. Rahman, S. K. M. Saad, and M. M. Salleh, Effect of NH3 Concentration on the Performance of Nitrogen doped TiO2 Photoelectrochemical Cell, Int J Electrochem Sci, 7, 7855–7865, (2012).
[3] M. Ouzzine, J. A. Macia-Agullo, M. A. Lillo-Rodenas, C. Quijada, and A. LinaresSolano, Synthesis of high surface area TiO2 nanoparticles by mild acid treatment with HCl or HI for photocataytic propene oxidation, Applied Catalysis B Environmental, (2014).
[4] B. Kilic, N. Gedic, S. P. Mucur, and A. S. Hergul, Band gap engineering and modifying surface of TiO2 nanostructures by Fe2O3 for enhanced-performance of dye sensitized solar cell, J. Mater Sci. Smiconductor Process, 31, 363–371, (2015).
[5] S. K. M. Saad, A. A. Umar, M. Y. A. Rahman, and M. M. Salleh, Porous Zn-doped TiO2 nanowall photoanode: effect of Zn2 concentration on the dye-sensitized solar cell performance, Appl Surf Sci, 353, 835–842, (2015).
[6] H. I. Hsiang and S. C. Lin, Effect of aging on nanocrystalline anatase-to-rutile phase transformation kinetics, Ceram Int, 34, 557–561, (2008).
[7] J. Kumar, A. Srivastava, and A. Bansal, Production of self cleaning cement using modified titanium dioxide, Int. J. Innovative Research in Sci, Eng. And Tech., 2, 2688– 2693, (2013).
[8] N. Ghrairi and M. Bouaicha, Structural, morphological, and optical properties of TiO2 thin films synthesized by the electro phoretic deposition technique, Nanoscale Res Lett, 7, p. 357, (2012).
[9] S. Patra, S. Bruyere, P. T. Taberna, and F. Sauvage, Electrodeposition of TiO2 using ionic liquids, Elecrochemistry Lett, 3, D-15–D-18, (2014).
[10] T. H. Meen, J. K. Tsai, Y. S. Tu, T. C. Wu, W. D. Hsu, and S. J. Chang, Optimization of the dye-sensitized solar cell performane by mechanical copression„ 9, p. 523, (2014).
[11] S. Vyas, R. Tiwary, K. Shubham, and P. Chakrabarti, Study of target effect on the structural, surface and otical properties of TiO2 thin film faabricated by RF sputring method, Superlattices Microstruct, 80, 215–221, (2015).
[12] M. Kavitha, C. Gopinathan, and P. Pandi, Synthesis and characterization of TiO2 nanopowder in hydrothermal and sol-gel method, Int, J. Adv. Res Tech., 2, 102–108, (2013).
[13] F. Bensouici, T. Souier, A. Iratni, A. A. Dakhel, R. Tala-Ighil, and M. Bououdina, Effect of acid nature in the starting solution on surface and photocatalytic properties of TiO2 thin films, Surf Coat Tech, 251, 170–176, (2014).