Investigation on the Structural and Optical Properties of Nanocrystalline TiO₂ Thin Films

Abstract:

Nanocrystalline TiO2 thin films were prepared by sol-gel dip coating method. The structural investigations were carried out using x-ray diffraction technique. Anatase TiO2 thin films with tetragonal phase were obtained and the grain size was observed to lie in the range of 21-25 nm. Analysis on the surface topography of prepared films have been carried out using atomic force microscopy (AFM). The band gap energy is calculated from the absorption spectra of TiO2 films and is found to lie in the range 3.3 to 3.7 eV.

• Periodical: Advanced Materials Research (Volume 678)
• Pages: 103-107
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.678.103
• Online since: March 2013
• Authors: Arumugam Ranjitha, Natarajan Muthukumarasamy, Santhanam Agilan, Mariyappan Thambidurai, Rangasamy Balasundraprabhu, Arumugam Chitrakala
• Keywords: AFM, Sol-Gel Method, TiO₂ Thin Film

References

[1] YN .Xia, PD. Yang, YG .Sun, YY .Wu, B .Mayers, B .Gates, One-dimensional nanostructures: synthesis, characterization, and applications, Adv Mater 15 (2003) 353-389.

DOI: 10.1002/adma.200390087

[2] Chen Xiaobo, S .Mao Samuel. Titanium dioxide nanomaterials: synthesis, properties, modifications, and applications, Chem Rev 107(7) (2007) 2891-2959.

DOI: 10.1021/cr0500535

[3] Ni Meng, KH .Leung Michael, YC .Leung Dennis, K .Sumathy, A review and recent developments in photocatalytic water-splitting using TiO2 for hydrogen production, Renewable Sustain Energy Rev,11 (2007) 401–425.

DOI: 10.1016/j.rser.2005.01.009

[4] A.T. Raghavender, A.P. Samantilleke, Pedro Sa, B.G. Almeida, M.I. Vasilevskiy, Nguyen Hoa Hong, Simple way to make Anatase TiO2 films on FTO glass for promising solar cells, Materials Letters 69 (2012) 59–62

DOI: 10.1016/j.matlet.2011.11.067

[5] Stamate, M.D, Dielectric properties of TiO2 thin films deposited by a dc magnetron sputtering system, Thin Solid Films 2000, 372, 246– 249

DOI: 10.1016/s0040-6090(00)01027-0

[6] Dinh, N. N., Oanh, N. T. T., Long, P. D., Bernard, M. C. and Hugot-Le Goff, A, Electrochromic properties of TiO anatase thin films prepared by a dipping sol–gel method Thin Solid Films 2003, 423, 70– 76

DOI: 10.1016/s0040-6090(02)00948-3

[7] Z.Ding, X. Hu, P.L. Yue, G.Q. Lu, P.F. Greenfield, Synthesis of anatase TiO2 supported on porous solids by chemical vapour deposition, Catal. Today 68 (2001) 173-182.

DOI: 10.1016/s0920-5861(01)00298-x

[8] G.Pecchi, P. Reyes, P.Sanhueza, J. Villasensor, Photocatalytic degradation of pentachlorophenol on TiO2 sol-gel catalysts, Chemo- Sphere 43 (2001) 141-146.

DOI: 10.1016/s0045-6535(00)00265-4

[9] R.S. Sonawane, S.G. Hegde, M.K. Dongare, Preparation of titanium (IV) oxide thin film photocatalyst by Sol-gel dip-coating, Mater. Chem. Phys. 77 (2002) 744-750.

DOI: 10.1016/s0254-0584(02)00138-4

[10] T.K. Rout, N. Bandyopadhyay, R. Narayan, Nitu Rani and D.K. Sengupta. Performance of titania–silica composite coating on interstitial-free steel sheet, Scripta Materialia 58 (2008) 473–476.

DOI: 10.1016/j.scriptamat.2007.10.046