Bulletin of the American Physical Society
APS March Meeting 2011
Volume 56, Number 1
Monday–Friday, March 21–25, 2011; Dallas, Texas
Abstract: S1.00239 : Tunable TiO2 Nanotubes as Nanotemplate for Solar Cells
Author:
Titanium oxide (TiO2) is an n-type semiconductor with a bandgap
energy of
3.0-3.2 eV. It has broad applications,
because of the versatile functionalities. Synthesis of anodic
titanium oxide
(ATO) nanotube templates has gained significant progress in
fluoride-ion-contained electrolytes. The one-dimensional (1D)
structure
provides a large specific surface area as well as a direct
pathway for
charge transport, thus rendering superior capabilities in
lightharvesting,
electrochromic switching, environmental sensing, energy storage,
etc. In
this work, highly ordered ATO nanotubes film has been synthesized by
two-step anodization method. After using a reductive doping
approach, the
metal materials (Cu and Ni) can be electrodeposited into the
nanotubes. The
versatile process yields reproducible tubular structures in ATO
nanotubes
due to the conductive nature of crystallized TiO2, indicating great
potential for nanotemplate application. A dye-sensitized solar
cell is also
demonstrated by employing the ATO films. It is observed that bottom
treatment greatly enhances short current density and filling factor
resulting in improved energy conversion efficiency.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2011.MAR.S1.239
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