Growth Mechanism of One-dimensional Rutile TiO2 Nanorods Array and Its Application for Dye-Sensitized Solar Cells

doi:10.11901/1005.3093.2013.611

Chinese Journal of Materials Research

2014, Vol. 28

Issue (6): 469-475 DOI: 10.11901/1005.3093.2013.611

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Growth Mechanism of One-dimensional Rutile TiO₂Nanorods Array and Its Application for Dye-Sensitized Solar Cells

Zengming ZHANG(

),Jing WANG,Yutian DING,Yong HU,Xingji SHANG

State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Materials, Lanzhou University of Technology, Lanzhou 730050

Cite this article:

Zengming ZHANG,Jing WANG,Yutian DING,Yong HU,Xingji SHANG. Growth Mechanism of One-dimensional Rutile TiO₂Nanorods Array and Its Application for Dye-Sensitized Solar Cells. Chinese Journal of Materials Research, 2014, 28(6): 469-475.

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Abstract

Photoanodes with a film of rutile TiO₂nanorods were prepared on a conductive glass substrate by hydrothermal method and then characterized by XRD, SEM and HRTEM. The effect of different hydrothermal conditions on the morphology of rutile TiO₂nanorods was carefully examined. The result shows that the diameter and length of rutile TiO₂ nanorods increase with the increase of the energy of hydrothermal system; the additives has a great effect on the growth of rutile nanorods; a dense layer will form at the interface of conductive substrates and the rutile TiO₂nanorods, which will affect the photo-electronic properties of DSSCs markedly. Under the stand conditions (AM 1.5 100 mW/cm²), a photoelectric conversion efficiency 1.81% is measured for the dye-sensitized solar sells (DSSCs) constructed with the prepared photoanodes.

Key words: rutile nanorod hydrothermal growth growth mechanism DSSCs

Received: 26 August 2013

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	Zengming ZHANG
	Jing WANG
	Yutian DING
	Yong HU
	Xingji SHANG

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https://www.cjmr.org/EN/10.11901/1005.3093.2013.611 OR https://www.cjmr.org/EN/Y2014/V28/I6/469

Fig.1 XRD patterns of the as-prepared TiO₂nanorods with different TTB concentration (a) 0.6 ml, (b) 0.8 ml, (c)1.2 ml, (d)1.6 ml

Fig.2 TEM and HRTEM picture of rutile nanorod

Fig.3 FESEM images of the oriented rutile nanorod film with different TTB concentration (a) 0.6 ml, (b) 1.2 ml, (c) 1.6 ml(the inset picture is the cross-sectional view) (TTB 1.6 ml), (d) 1.8 ml

Fig.4 FESEM images of oriented rutile nanorod film grown at different temperatures (a) 120℃, (b)140℃, (c)160℃, (d)180℃, (e)150℃, 3 h

Fig.5 FESEM images of oriented rutile nanorod film with different levels of NaCl (a) 1 ml, (b) 2 ml, (c) 4 ml (the cross-sectional view, growth time 10 h), (d) 7 ml

Fig.6 Diameter distribution of rutile nanorods under different concentration ofCl^- (a) NaCl 1 ml, (b) NaCl 4 ml

Fig.7 N 719 dye absorbtion performance of DSSCs electrodes under different conditions

Table 1 Related parameters of photovoltaic performance of DSSCs presented in Fig.8

Fig.8 I-V curves of DSSCs under different conditions

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