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TiO2 Nanotube Films via Laser Ablation for Solar Cells

Published online by Cambridge University Press:  31 January 2011

Sanjaya D. Perara  and
Kenneth Balkus
Sanjaya D. Perara
Affiliation:
dsp081000@utdallas.edu, University of Texas at Dallas, Chemistry, Richardson, Texas, United States
Kenneth Balkus
Affiliation:
balkus@utdallas.edu
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Abstract

Titanium dioxide (TiO2) nanostructures are widely employed in photoconversion processes. In particular titanium dioxide nanotubes (TNTs) have shown promise in many applications including solar cells. While there are methods for making TNT films the preparation of high surface area small diameter (<10nm) TNT films is a challenge. We have now prepared TNT films by pulsed laser deposition (PLD) of P25 and P90 TiO2TiO2 nanoparticles onto stainless steel foils followed by a hydrothermal treatment. The best results were obtained when the TiO2TiO2 films were deposited at 500°C. Subsequent hydrothermal treatment at 150°C results in a dense mat of TNTs that are ˜10 nm in diameter with a pore size of ˜5 nm. The TNTs were further functionalized with quantum dots including PbS with controlled particle size and location to access a greater portion of the solar spectrum. The titanium oxide nanotube/ quantum dot films were characterized by SEM, TEM, XRD UV-Vis and Raman spectroscopy. Preliminary results for the formation and characterization of solar cells using the TNT films will be described.

Keywords

nanostructurelaser ablationphotovoltaic
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1211: Symposium R – Advanced Nanostructured Solar Cells , 2009 , 1211-R11-38
Copyright
Copyright © Materials Research Society 2010

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