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Effect of Silver Nanoparticles Size Prepared by Photoreduction Method on Optical Absorption Spectra of TiO2/Ag/N719 Dye Composite Films

Authors: C. Photiphitak, P. Rakkwamsuk, P. Muthitamongkol, C. Thanachayanont, C. Sae-Kung


TiO2/Ag composite films were prepared by incorporating Ag in the pores of mesoporous TiO2 films using a photoreduction method. The Ag nanoparticle sizes were in a range of 3.66-38.56 nm. The TiO2/Ag composite films were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscropy (TEM). The TiO2 films and TiO2/Ag composite films were immersed in a 0.3 mM N719 dye solution and characterized by UV-Vis spectrophotometer. The TiO2/Ag/N719 composite film showed that an optimal size of Ag nanoparticles was 19.12 nm and, hence, gave the maximum optical absorption spectra. The improved absorption was due to surface plasmon resonance induced by the Ag nanoparticles to enhance the absorption coefficient of the dye.

Keywords: Optical Properties, Surface Plasmon Resonance, silver nanoparticle, TiO2/Ag composite films

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[1] C. Wen, K. Ishikawa, M. Kishima, K. Yamada, "Effects of silver particles on the photovoltaic properties of dye-sensitized TiO2 thin films", Sol Energ Mat Sol C, vol. 61, no. 4, pp. 339-351, Apr. 2000.
[2] K. Che Lee, S. Jein Lin, C. Hong Lin, C. Song Tsai, Y. Jen Lu, "Size effect of Ag nanoparticles on surface plasmon resonance", Surf Coat Tech, vol. 202, pp. 5339-5342,Aug 2008.
[3] G. Zhao, H. Kozuka, T. Yoko, "Effect of the incorporation of silver and gold nanoparticles on the photoanodic properties of rose Bengal sensitized TiO2 film electrodes prepared by sol-gel method", Sol Energ Mat Sol C, vol. 46, pp. 219-231, Jun 1997.
[4] A.M. Glass, P.F. Lioa, J.G. Bergman, D.H. Olson, "Interaction of metal particles with adsorbed dye molecules: absorption and luminescence", Opt Lett, vol. 5, pp. 368-370, 1980.
[5] Z.Y. Zhu, C. Mao, R.Y. Yang, L.X. Dai, C.S. Nie, "Surface-enhanced Raman scattering of Ru(II) homo- and heterolytic complexes with 2,2ÔÇ▓- bipyridine and 1,1ÔÇ▓-biisoquinoline in aqueous silver sol", J Raman Spectrosc, vol. 24, pp. 221-226, Apr 1993.
[6] D.M. Schaadt, B. Feng, E.T. Yu, "Enhanced semiconductor optical absorption via surface plasmon excitation in metal nanoparticles", Appl Phys Lett, vol. 86, pp. 063106-1 - 063106-3, Feb 2005.
[7] C.F. Eagen, "Nature of the enhanced optical absorption of dye-coated Ag island films", Appl Opt Appl Optics, vol. 20, pp. 3035-3042, 1981.
[8] J.J. Mock, M. Barbic, D.R. Smith, D.A. Schultz, S. Schultz, "Shape effects in plasmon resonance of individual colloidal silver nanoparticles", J Chem Phys, vol. 116, pp. 6755-6759, Jan 2002.
[9] P. Royer, J.P. Goudonnet, R.J. Warmack, T.L. Ferrell, "Substrate effects on surface-plasmon spectra in metal-island films", Phys Rev B., vol. 35, pp. 3753-3759, 1987.
[10] G. Xu, M. Tazawa, P. Jin, S. Nakao, K. Yoshimura, "Wavelength tuning of surface plasmon resonance using dielectric layers on silver island films", Appl Phys Lett, vol. 82, pp. 3811-3813, 2003.
[11] M. Ihara, K. Tanaka, K. Sakaki, I. Honma, K. Yamada, "Enhancement of the absorption coefficient of cis-(NCS)2 Bis(2, 2ÔÇ▓-bipyridyl-4, 4ÔÇ▓- dicarboxylate) ruthenium (II) dye-sentisized solar cells by a silver island film", J Phys Chem B, vol. 101, pp. 153-157, Jun 1997.
[12] J. Okumu, C. Dahmen, A.N. Sprafke, M. Luysberg, G, von Plessen, M. Wuttig, "Photochromic silver nanoparticles fabricated by sputter deposition", J Appl Phys, vol. 97, pp. 094305-094305-6, Apr 2005.
[13] G. Sandmann, H. Dietz, W. Plieth, "Preparation of silver nanoparticles on ITO surfaces by a double-pulse method", J Electroanal Chem, vol. 491, pp. 78-86, Sep 2000.
[14] L. Miao, Y. Ina, S. Tanemura, T. Jiang, M. Taneura, K. Kaneko, S. Toh, Y. Mori, "Fabrication and photochromic study of titanate nanotube loaded with silver nanoparticles", Surf Sci , vol. 601 , pp. 2792-2799, Jul 2007.
[15] I. Paramasivam, J.M. Macak, A. Ghicov, P Schmuki, "Enhance photochromism of Ag loade self-organized TiO2 nanotube layers", Chem Phys Lett, vol. 445, pp. 233-237, Sep 2007.
[16] Y. Liu, X. Wang, F. Yang, X. Yang, "Excellent antimicrobial properties of mesoporous anatase TiO2 and Ag/TiO2 composite films", Micropor Mesopor Mat, vol. 114, pp. 431-439, Sep 2008.
[17] Y. Ohko, T. Tatsuma, T. Fuji, K. Naoi, C. Niwa, Y. Kubota, A. Fijishima, "Multicolour photochromism of TiO2 films loaded with silver nanoparticles", Nat Mater, vol. 2, pp. 29-31, 2003.
[18] F. Mafune, J.Y. Kohno, Y. Takeda, T. Kondow, "Formation and Size Control of Silver Nanoparticles by Laser Ablation in Aqueous Solution", J Phys Chem B, vol. 104, pp. 9111-9117, Sep 2000.
[19] D.S. Wang, M. KerKer, "Enhanced Raman scattering by molecules adsorbed at the surface of colloidal spheroids", Phys Rev B vol. 24, pp. 1777-1790, 1981.