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Chin. Phys. B, 2014, Vol. 23(4): 048104    DOI: 10.1088/1674-1056/23/4/048104

Synthesis and application of TiO2 single-crystal nanorod arrays grown by multicycle hydrothermal for dye-sensitized solar cells

Zhu Jian-Jing, Zhao Yu-Long, Zhu Lei, Gu Xiu-Quan, Qiang Ying-Huai
School of Materials Science and Engineering, China University of Mining and Technology, Xuzhou 221116, China
Abstract  TiO2 is a wide band gap semiconductor with important applications in photovoltaic cells. Vertically aligned TiO2 nanorod arrays (NRs) are grown on the fluorine-doped tin oxide (FTO) substrates by a multicycle hydrothermal synthesis process. The samples are characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), and selected-area electron diffraction (SAED). It is found that dye-sensitized solar cells (DSSCs) assembled by the as-prepared TiO2 single-crystal NRs exhibit different trends under the condition of different nucleation and growth concentrations. Optimum cell performance is obtained with high nucleation concentration and low growth cycle concentration. The efficiency enhancement is mainly attributed to the improved specific surface area of the nanorod.
Keywords:  TiO2 single-crystal nanorod array      mild multicycle hydrothermal      dye-sensitized solar cell      low growth cycle concentration  
Received:  13 August 2013      Revised:  09 October 2013      Accepted manuscript online: 
PACS:  81.10.Aj (Theory and models of crystal growth; physics and chemistry of crystal growth, crystal morphology, and orientation)  
  68.55.-a (Thin film structure and morphology)  
  42.25.Bs (Wave propagation, transmission and absorption)  
  81.07.Gf (Nanowires)  
Fund: Project supported by the Fundamental Research Funds for the Central Universities, China (Grant No. 2013XK07).
Corresponding Authors:  Zhao Yu-Long     E-mail:
About author:  81.10.Aj; 68.55.-a; 42.25.Bs; 81.07.Gf

Cite this article: 

Zhu Jian-Jing, Zhao Yu-Long, Zhu Lei, Gu Xiu-Quan, Qiang Ying-Huai Synthesis and application of TiO2 single-crystal nanorod arrays grown by multicycle hydrothermal for dye-sensitized solar cells 2014 Chin. Phys. B 23 048104

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