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International Journal of Photoenergy
Volume 2012, Article ID 268173, 14 pages
http://dx.doi.org/10.1155/2012/268173
Research Article

Effective Sol-Gel Nanocoatings on ZnO Electrodes for Suppressing Recombination in Dye-Sensitized Solar Cells

Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan

Received 3 February 2012; Accepted 16 April 2012

Academic Editor: David Worrall

Copyright © 2012 Shintaro Ueno and Shinobu Fujihara. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Linked References

  1. M. Grätzel, “Solar energy conversion by dye-sensitized photovoltaic cells,” Inorganic Chemistry, vol. 44, no. 20, pp. 6841–6851, 2005. View at Publisher · View at Google Scholar · View at Scopus
  2. S. Ueno, N. Hitachi, and S. Fujihara, “Nanostructural control of ZnO photoelectrodes for enhancing solar energy conversion efficiency in dye-sensitised solar cells,” International Journal of Nanoparticles, vol. 4, no. 2-3, pp. 231–247, 2011. View at Publisher · View at Google Scholar · View at Scopus
  3. S. Ueno and S. Fujihara, “Effect of an Nb2O5 nanolayer coating on ZnO electrodes in dye-sensitized solar cells,” Electrochimica Acta, vol. 56, no. 7, pp. 2906–2913, 2011. View at Publisher · View at Google Scholar · View at Scopus
  4. S. Ueno and S. Fujihara, “Formation of silica nanolayers on ZnO electrodes in dye-sensitized solar cells,” European Journal of Inorganic Chemistry, no. 14, pp. 2165–2171, 2010. View at Google Scholar
  5. K. Sayama, H. Sugihara, and H. Arakawa, “Photoelectrochemical properties of a porous Nb2O5 electrode sensitized by a ruthenium dye,” Chemistry of Materials, vol. 10, no. 12, pp. 3825–3832, 1998. View at Google Scholar · View at Scopus
  6. M. Law, L. E. Greene, J. C. Johnson, R. Saykally, and P. Yang, “Nanowire dye-sensitized solar cells,” Nature Materials, vol. 4, no. 6, pp. 455–459, 2005. View at Publisher · View at Google Scholar · View at Scopus
  7. K. Keis, C. Bauer, G. Boschloo et al., “Nanostructured ZnO electrodes for dye-sensitized solar cell applications,” Journal of Photochemistry and Photobiology A, vol. 148, no. 1–3, pp. 57–64, 2002. View at Publisher · View at Google Scholar · View at Scopus
  8. Q. Zhang, T. P. Chou, B. Russo, S. A. Jenekhe, and G. Cao, “Aggregation of ZnO nanocrystallites for high conversion efficiency in dye-sensitized solar cells,” Angewandte Chemie—International Edition, vol. 47, no. 13, pp. 2402–2406, 2008. View at Publisher · View at Google Scholar · View at Scopus
  9. Y. H. Lai, C. Y. Lin, H. W. Chen et al., “Fabrication of a ZnO film with a mosaic structure for a high efficient dye-sensitized solar cell,” Journal of Materials Chemistry, vol. 20, no. 42, pp. 9379–9385, 2010. View at Publisher · View at Google Scholar · View at Scopus
  10. S. Yodyingyong, Q. Zhang, K. Park et al., “ZnO nanoparticles and nanowire array hybrid photoanodes for dye-sensitized solar cells,” Applied Physics Letters, vol. 96, no. 7, Article ID 073115, 3 pages, 2010. View at Publisher · View at Google Scholar · View at Scopus
  11. S. H. Ko, D. Lee, H. W. Kang et al., “Nanoforest of hydrothermally grown hierarchical ZnO nanowires for a high efficiency dye-sensitized solar cell,” Nano Letters, vol. 11, no. 2, pp. 666–671, 2011. View at Publisher · View at Google Scholar · View at Scopus
  12. E. Hosono, S. Fujihara, and T. Kimura, “Synthesis, structure and photoelectrochemical performance of micro/nano-textured ZnO/eosin Y electrodes,” Electrochimica Acta, vol. 49, no. 14, pp. 2287–2293, 2004. View at Publisher · View at Google Scholar · View at Scopus
  13. E. Hosono, S. Fujihara, I. Honma, and H. Zhou, “The fabrication of an upright-standing zinc oxide nanosheet for use in dye-sensitized solar cells,” Advanced Materials, vol. 17, no. 17, pp. 2091–2094, 2005. View at Publisher · View at Google Scholar · View at Scopus
  14. K. Kakiuchi, E. Hosono, and S. Fujihara, “Enhanced photoelectrochemical performance of ZnO electrodes sensitized with N-719,” Journal of Photochemistry and Photobiology A, vol. 179, no. 1-2, pp. 81–86, 2006. View at Publisher · View at Google Scholar · View at Scopus
  15. K. Kakiuchi, M. Saito, and S. Fujihara, “Fabrication of ZnO films consisting of densely accumulated mesoporous nanosheets and their dye-sensitized solar cell performance,” Thin Solid Films, vol. 516, no. 8, pp. 2026–2030, 2008. View at Publisher · View at Google Scholar · View at Scopus
  16. M. Saito and S. Fujihara, “Large photocurrent generation in dye-sensitized ZnO solar cells,” Energy and Environmental Science, vol. 1, no. 2, pp. 280–283, 2008. View at Publisher · View at Google Scholar · View at Scopus
  17. M. Saito and S. Fujihara, “Fabrication and photovoltaic properties of dye-sensitized ZnO thick films by a facile doctor-blade printing method using nanocrystalline pastes,” Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan, vol. 117, no. 1367, pp. 823–827, 2009. View at Google Scholar · View at Scopus
  18. S. Ueno and S. Fujihara, “Controlled synthesis of nanostructured ZnO films for use in dye-sensitized solar cells,” Journal of the Electrochemical Society, vol. 158, no. 1, pp. K1–K5, 2011. View at Publisher · View at Google Scholar · View at Scopus
  19. S. Singh, P. Thiyagarajan, K. Mohan Kant et al., “Structure, microstructure and physical properties of ZnO based materials in various forms: bulk, thin film and nano,” Journal of Physics D, vol. 40, no. 20, pp. 6312–6327, 2007. View at Publisher · View at Google Scholar · View at Scopus
  20. M. Grätzel, “Photoelectrochemical cells,” Nature, vol. 414, no. 6861, pp. 338–344, 2001. View at Publisher · View at Google Scholar · View at Scopus
  21. M. A. Butler and D. S. Ginley, “Prediction of flatband potentials at semiconductor-electrolyte interfaces from atomic electronegativities,” Journal of the Electrochemical Society, vol. 125, no. 2, pp. 228–232, 1978. View at Google Scholar · View at Scopus
  22. H. P. Maruska and A. K. Ghosh, “A study of oxide-based heterostructure photoelectrodes,” Solar Energy Materials, vol. 1, no. 5-6, pp. 411–429, 1979. View at Google Scholar · View at Scopus
  23. G. Redmond, A. O'Keeffe, C. Burgess, C. MacHale, and D. Fitzmaurice, “Spectroscopic determination of the flatband potential of transparent nanocrystalline ZnO films,” Journal of Physical Chemistry, vol. 97, no. 42, pp. 11081–11086, 1993. View at Google Scholar · View at Scopus
  24. T. P. Chou, Q. Zhang, and G. Cao, “Effects of dye loading conditions on the energy conversion efficiency of ZnO and TiO2 dye-sensitized solar cells,” Journal of Physical Chemistry C, vol. 111, no. 50, pp. 18804–18811, 2007. View at Publisher · View at Google Scholar · View at Scopus
  25. M. K. Nazeeruddin, A. Kay, I. Rodicio et al., “Conversion of light to electricity by cis-X2bis(2,2′-bipyridyl-4,4′-dicarboxylate)ruthenium(II) charge-transfer sensitizers (X = Cl-, Br-, I-, CN-, and SCN-) on nanocrystalline TiO2 electrodes,” Journal of the American Chemical Society, vol. 115, no. 14, pp. 6382–6390, 1993. View at Google Scholar · View at Scopus
  26. C. H. Ku and J. J. Wu, “Chemical bath deposition of ZnO nanowire-nanoparticle composite electrodes for use in dye-sensitized solar cells,” Nanotechnology, vol. 18, no. 50, Article ID 505706, 9 pages, 2007. View at Publisher · View at Google Scholar · View at Scopus
  27. S. G. Chen, S. Chappel, Y. Diamant, and A. Zaban, “Preparation of Nb2O5 coated TiO2 nanoporous electrodes and their application in dye-sensitized solar cells,” Chemistry of Materials, vol. 13, no. 12, pp. 4629–4634, 2001. View at Publisher · View at Google Scholar · View at Scopus
  28. K. Tennakone, J. Bandara, P. K. M. Bandaranayake, G. R. A. Kumara, and A. Konno, “Enhanced efficiency of a dye-sensitized solar cell made from MgO-coated nanocrystalline SnO2,” Japanese Journal of Applied Physics, Part 2, vol. 40, no. 7, pp. L732–L734, 2001. View at Google Scholar · View at Scopus
  29. A. Kay and M. Grätzel, “Dye-sensitized core-shell nanocrystals: improved efficiency of mesoporous tin oxide electrodes coated with a thin layer of an insulating oxide,” Chemistry of Materials, vol. 14, no. 7, pp. 2930–2935, 2002. View at Publisher · View at Google Scholar · View at Scopus
  30. P. K. M. Bandaranayake, P. V. V. Jayaweera, and K. Tennakone, “Dye-sensitization of magnesium-oxide-coated cadmium sulfide,” Solar Energy Materials and Solar Cells, vol. 76, no. 1, pp. 57–64, 2003. View at Publisher · View at Google Scholar · View at Scopus
  31. K. Tennakone, G. R. R. A. Kumara, I. R. M. Kottegoda, and V. P. S. Perera, “An efficient dye-sensitized photoelectrochemical solar cell made from oxides of tin and zinc,” Chemical Communications, no. 1, pp. 15–16, 1999. View at Google Scholar · View at Scopus
  32. B. L. Cushing, V. L. Kolesnichenko, and C. J. O'Connor, “Recent advances in the liquid-phase syntheses of inorganic nanoparticles,” Chemical Reviews, vol. 104, no. 9, pp. 3893–3946, 2004. View at Publisher · View at Google Scholar · View at Scopus
  33. P. Yang, M. Ando, and N. Murase, “Encapsulation of emitting CdTe QDs within silica beads to retain initial photoluminescence efficiency,” Journal of Colloid and Interface Science, vol. 316, no. 2, pp. 420–427, 2007. View at Publisher · View at Google Scholar · View at Scopus
  34. M. A. Aegerter, “Sol-gel niobium pentoxide: a promising material for electrochromic coatings, batteries, nanocrystalline solar cells and catalysis,” Solar Energy Materials and Solar Cells, vol. 68, no. 3-4, pp. 401–422, 2001. View at Publisher · View at Google Scholar · View at Scopus
  35. S. D. Meetei, S. D. Singh, and V. Sudarsan, “Polyol synthesis and characterizations of cubic ZrO2:Eu3+ nanocrystals,” Journal of Alloys and Compounds, vol. 514, pp. 174–178, 2012. View at Publisher · View at Google Scholar
  36. Y. Du, M. S. Zhang, J. Hong, Y. Shen, Q. Chen, and Z. Yin, “Structural and optical properties of nanophase zinc oxide,” Applied Physics A, vol. 76, no. 2, pp. 171–176, 2003. View at Publisher · View at Google Scholar · View at Scopus
  37. S. Ueno and S. Fujihara, “Influence of sintering behavior of ZnO nanoparticles on J-V characteristics of ZnO-based dye-sensitized solar cells,” Key Engineering Materials, vol. 445, pp. 117–120, 2010. View at Publisher · View at Google Scholar · View at Scopus
  38. E. Palomares, J. N. Clifford, S. A. Haque, T. Lutz, and J. R. Durrant, “Control of charge recombination dynamics in dye sensitized solar cells by the use of conformally deposited metal oxide blocking layers,” Journal of the American Chemical Society, vol. 125, no. 2, pp. 475–482, 2003. View at Publisher · View at Google Scholar · View at Scopus
  39. F. Lenzmann, J. Krueger, S. Burnside et al., “Surface photovoltage spectroscopy of dye-sensitized solar cells with TiO2, Nb2O5, and SrTiO3 nanocrystalline photoanodes: indication for electron injection from higher excited dye states,” Journal of Physical Chemistry B, vol. 105, no. 27, pp. 6347–6352, 2001. View at Publisher · View at Google Scholar · View at Scopus
  40. K. Tennakone and J. Bandara, “Multiphoton semiconductor photocatalysis,” Solar Energy Materials and Solar Cells, vol. 60, no. 4, pp. 361–365, 2000. View at Publisher · View at Google Scholar · View at Scopus
  41. R. Katoh, A. Furube, T. Yoshihara et al., “Efficiencies of Electron Injection from Excited N3 Dye into Nanocrystalline Semiconductor (ZrO2, TiO2, ZnO, Nb2O5, SnO2, In2O3) Films,” Journal of Physical Chemistry B, vol. 108, no. 15, pp. 4818–4822, 2004. View at Google Scholar · View at Scopus
  42. M. Law, L. E. Greene, A. Radenovic, T. Kuykendall, J. Liphardt, and P. Yang, “ZnO-Al2O3 and ZnO-TiO2 core-shell nanowire dye-sensitized solar cells,” Journal of Physical Chemistry B, vol. 110, no. 45, pp. 22652–22663, 2006. View at Publisher · View at Google Scholar · View at Scopus
  43. Y. Y. Xi, Y. F. Hsu, A. B. Djurišić, and W. K. Chan, “Electrochemical synthesis of ZnO nanoporous films at low temperature and their application in dye-sensitized solar cells,” Journal of the Electrochemical Society, vol. 155, no. 9, pp. D595–D598, 2008. View at Publisher · View at Google Scholar · View at Scopus
  44. F. Fabregat-Santiago, J. García-Cañadas, E. Palomares et al., “The origin of slow electron recombination processes in dye-sensitized solar cells with alumina barrier coatings,” Journal of Applied Physics, vol. 96, no. 11, pp. 6903–6907, 2004. View at Publisher · View at Google Scholar · View at Scopus
  45. H. Chen, A. Du Pasquier, G. Saraf, J. Zhong, and Y. Lu, “Dye-sensitized solar cells using ZnO nanotips and Ga-doped ZnO films,” Semiconductor Science and Technology, vol. 23, no. 4, Article ID 045004, 6 pages, 2008. View at Publisher · View at Google Scholar · View at Scopus