Growth of the [110] Oriented TiO2 Nanorods on ITO Substrates by Sputtering Technique for Dye-Sensitized Solar Cells

TiO2 films have been deposited on ITO substrates by dc reactive magnetron sputtering technique. It has been found that the sputtering pressure is a very important parameter for the structure of the deposited TiO2 films. When the pressure is lower than 1 Pa, the deposited film has a dense structure and shows a preferred orientation along the [101] direction. However, the nanorod structure has been obtained as the sputtering pressure is higher than 1 Pa. These nanorods structure TiO2 film shows a preferred orientation along the [110] direction. The phases of the deposited TiO2 films have been characterized by the x-ray diffraction and the Raman scattering measurements. All the films show an anatase phase and no other phase has been observed. The results of the SEM show that these TiO2 nanorods are perpendicular to the ITO substrate. The TEM measurement shows that the nanorods have a very rough surface. The dye-sensitized solar cells (DSSCs) have been assembled using these TiO2 nanorod films prepared at different sputtering pressures as photoelectrode. And the effect of the sputtering pressure on the properties of the photoelectric conversion of the DSSCs has been studied.

[1]  Fumin Wang,et al.  Dye-sensitized solar cells based on a single-crystalline TiO2 nanorod film. , 2006, The journal of physical chemistry. B.

[2]  Xiaomin Li,et al.  Nanoporous TiO2 aerogel blocking layer with enhanced efficiency for dye-sensitized solar cells , 2014 .

[3]  M. Grätzel.  Dye-sensitized solar cells , 2003 .

[4]  Wang Kong.  Dye-Sensitized solar cells , 2007 .

[5]  Fumin Wang,et al.  Highly efficient dye-sensitized solar cells with a titania thin-film electrode composed of a network structure of single-crystal-like TiO2 nanowires made by the "oriented attachment" mechanism. , 2004, Journal of the American Chemical Society.

[6]  Yanyan Jiang,et al.  Liquid-liquid phase transition and structure inheritance in carbon films , 2014, Scientific Reports.

[7]  Xiaoxu Chen,et al.  Rapid charge-transfer in polypyrrole–single wall carbon nanotube complex counter electrodes: Improved photovoltaic performances of dye-sensitized solar cells , 2014 .

[8]  M. Grätzel,et al.  A low-cost, high-efficiency solar cell based on dye-sensitized colloidal TiO2 films , 1991, Nature.

[9]  U. Bach,et al.  The function of a TiO2 compact layer in dye-sensitized solar cells incorporating "planar" organic dyes. , 2008, Nano letters.

[10]  Hee-jee Kim,et al.  Sputter deposition and surface treatment of TiO2 films for dye-sensitized solar cells using reactive RF plasma , 2007 .

[11]  Lijian Meng,et al.  The control of the diameter of the nanorods prepared by dc reactive magnetron sputtering and the applications for DSSC , 2010 .

[12]  Annabella Selloni,et al.  Structure and energetics of stoichiometric TiO 2 anatase surfaces , 2001 .

[13]  Lijian Meng,et al.  Blocking layer effect on dye-sensitized solar cells assembled with TiO2 nanorods prepared by dc reactive magnetron sputtering , 2011 .

[14]  Sa. K. Narayandass,et al.  Structural characterization of DC magnetron-sputtered TiO2 thin films using XRD and Raman scattering studies , 2003 .

[15]  Moon-Sung Kang,et al.  Columnar rutile TiO2 based dye-sensitized solar cells by radio-frequency magnetron sputtering , 2008 .

[16]  Fujio Izumi,et al.  Raman spectrum of anatase, TiO2 , 1978 .

[17]  Golam Newaz,et al.  Residual stresses and Raman shift relation in anatase TiO2 thin film , 2009 .

[18]  C. Thompson.  Structure Evolution During Processing of Polycrystalline Films , 2000 .

[19]  Wei Guo,et al.  Economical Pt-free catalysts for counter electrodes of dye-sensitized solar cells. , 2012, Journal of the American Chemical Society.

[20]  Kai Zhu,et al.  Enhanced charge-collection efficiencies and light scattering in dye-sensitized solar cells using oriented TiO2 nanotubes arrays. , 2007, Nano letters.

[21]  Weifeng Zhang,et al.  Dye-Sensitized Solar Cells Based on , 2011 .

[22]  Seeram Ramakrishna,et al.  Controlled electron injection and transport at materials interfaces in dye sensitized solar cells , 2009 .

[23]  S. Mhaisalkar,et al.  A maskless synthesis of TiO2-nanofiber-based hierarchical structures for solid-state dye-sensitized solar cells with improved performance , 2014, Nanoscale Research Letters.

[24]  Yucheng He,et al.  Novel fabrication of TiO2/ZnO nanotube array heterojunction for dye-sensitized solar cells , 2014 .

[25]  Lijian Meng,et al.  Effect of Annealing Temperature on TiO2 Nanorod Films Prepared by dc Reactive Magnetron Sputtering for Dye-Sensitized Solar Cells , 2011 .

[26]  H. Cai,et al.  Insights on the accumulation of charge carriers for enhanced electrical and photoelectric behaviors in conducting multilayer films , 2013 .

[27]  Pinliang Ying,et al.  Sputtered highly ordered TiO2 nanorod arrays and their applications as the electrode in dye-sensitized solar cells. , 2011, Journal of nanoscience and nanotechnology.

[28]  Annabella Selloni,et al.  Erratum: Structure and energetics of stoichiometric TiO 2 anatase surfaces [Phys. Rev. B 63, 155409 (2001)] , 2002 .

[29]  Jiazang Chen,et al.  Electrophoretic deposition of TiO2 nanorods for low-temperature dye-sensitized solar cells , 2014 .

[30]  C. Granqvist,et al.  Dye-Sensitized Nanocrystalline Titanium-Oxide-Based Solar Cells Prepared by Sputtering: Influence of the Substrate Temperature During Deposition , 2000 .

[31]  Investigation of sputter-deposited TiO2 thin film for the fabrication of dye-sensitized solar cells , 2008 .

[32]  Jong Hak Kim,et al.  Improved electron transfer and plasmonic effect in dye-sensitized solar cells with bi-functional Nb-doped TiO2/Ag ternary nanostructures. , 2014, Nanoscale.

[33]  Tao Yu,et al.  The different electron transport of two nanotubes incorporated in working electrode of dye-sensitized solar cells , 2013 .

[34]  C. Chien,et al.  Enhancing Charge Collection in Dye-Sensitized Solar Cells by Trimming Sidewall of the TiO2 , 2011 .

[35]  Hongxia Wang,et al.  Influence of electrolyte cations on electron transport and electron transfer in dye-sensitized solar cells , 2012 .

[36]  H. M. Jang,et al.  Reduced charge recombination by the formation of an interlayer using a novel dendron coadsorbent in solid-state dye-sensitized solar cells , 2012 .

[37]  Annabella Selloni,et al.  Erratum: Structure and energetics of stoichiometric TiO2 anatase surfaces (Physical Review B (2001) 63 (155409)) , 2002 .

[38]  M. P. D. Santos,et al.  Structural Modification of TiO2 Nanorod Films with an Influence on the Photovoltaic Efficiency of a Dye-Sensitized Solar Cell (DSSC) , 2013, Journal of Inorganic and Organometallic Polymers and Materials.

[39]  T. Miyasaka,et al.  Alternation of Charge Injection and Recombination in Dye-Sensitized Solar Cells by the Addition of Nonconjugated Bridge to Organic Dyes , 2013 .

[40]  Julius M. Mwabora,et al.  Electron transport and recombination in dye sensitized solar cells fabricated from obliquely sputter deposited and thermally annealed TiO2 films , 2007 .

[41]  X. Zhao,et al.  Increased charge transfer of PVDF-HFP based electrolyte by addition of graphite nanofiber and its application in dye-sensitized solar cells , 2013 .

[42]  Susumu Yoshikawa,et al.  Highly efficient dye-sensitized solar cell using nanocrystalline titania containing nanotube structure , 2004 .

[43]  Tao Yu,et al.  The role of oxygen vacancy-Ti3+ states on TiO2 nanotubes' surface in dye-sensitized solar cells , 2013 .

[44]  K. Koumoto,et al.  Template‐Free Self‐Assembly of a Nanoporous TiO2 Thin Film , 2007 .

[45]  Peidong Yang,et al.  Nanowire dye-sensitized solar cells , 2005, Nature materials.

[46]  J. Bell,et al.  Kinetics of electron recombination of dye-sensitized solar cells based on TiO2 nanorod arrays sensitized with different dyes. , 2011, Physical chemistry chemical physics : PCCP.

[47]  John A. Thornton,et al.  Influence of apparatus geometry and deposition conditions on the structure and topography of thick sputtered coatings , 1974 .

[48]  T. Ma,et al.  Low-cost dye-sensitized solar cell based on nine kinds of carbon counter electrodes , 2011 .

[49]  Dong Young Kim,et al.  Charge Transport Characteristics of High Efficiency Dye-Sensitized Solar Cells Based on Electrospun TiO2 Nanorod Photoelectrodes , 2009 .

[50]  C. Granqvist,et al.  High efficiency dye-sensitized nanocrystalline solar cells based on sputter deposited Ti oxide films , 2000 .