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Materials 2012, 5(10), 1890-1909; doi:10.3390/ma5101890
Review

Controlling Morphological Parameters of Anodized Titania Nanotubes for Optimized Solar Energy Applications

1
, 1,*  and 2,*
Received: 3 September 2012; in revised form: 8 October 2012 / Accepted: 10 October 2012 / Published: 19 October 2012
(This article belongs to the Special Issue Advanced Materials for Water-Splitting)
Download PDF [1282 KB, uploaded 19 October 2012]
Abstract: Anodized TiO2 nanotubes have received much attention for their use in solar energy applications including water oxidation cells and hybrid solar cells [dye-sensitized solar cells (DSSCs) and bulk heterojuntion solar cells (BHJs)]. High surface area allows for increased dye-adsorption and photon absorption. Titania nanotubes grown by anodization of titanium in fluoride-containing electrolytes are aligned perpendicular to the substrate surface, reducing the electron diffusion path to the external circuit in solar cells. The nanotube morphology can be optimized for the various applications by adjusting the anodization parameters but the optimum crystallinity of the nanotube arrays remains to be realized. In addition to morphology and crystallinity, the method of device fabrication significantly affects photon and electron dynamics and its energy conversion efficiency. This paper provides the state-of-the-art knowledge to achieve experimental tailoring of morphological parameters including nanotube diameter, length, wall thickness, array surface smoothness, and annealing of nanotube arrays.
Keywords: titania; TiO2; nanotube; water oxidation; bulk heterojunction solar cells; dye-sensitized solar cells; photoelectrochemical catalysis titania; TiO2; nanotube; water oxidation; bulk heterojunction solar cells; dye-sensitized solar cells; photoelectrochemical catalysis
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.

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MDPI and ACS Style

Haring, A.; Morris, A.; Hu, M. Controlling Morphological Parameters of Anodized Titania Nanotubes for Optimized Solar Energy Applications. Materials 2012, 5, 1890-1909.

AMA Style

Haring A, Morris A, Hu M. Controlling Morphological Parameters of Anodized Titania Nanotubes for Optimized Solar Energy Applications. Materials. 2012; 5(10):1890-1909.

Chicago/Turabian Style

Haring, Andrew; Morris, Amanda; Hu, Michael. 2012. "Controlling Morphological Parameters of Anodized Titania Nanotubes for Optimized Solar Energy Applications." Materials 5, no. 10: 1890-1909.


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