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

doi:10.1088/1674-1056/23/4/048104

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: sdyulong@cumt.edu.cn

About author: 81.10.Aj; 68.55.-a; 42.25.Bs; 81.07.Gf

Cite this article:

Zhu Jian-Jing (朱建晶), Zhao Yu-Long (赵宇龙), Zhu Lei (朱磊), Gu Xiu-Quan (顾修全), Qiang Ying-Huai (强颖怀) 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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Synthesis and application of TiO2 single-crystal nanorod arrays grown by multicycle hydrothermal for dye-sensitized solar cells

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