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TiO2 Nanotube Films via Laser Ablation for Solar Cells

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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.

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Authors and Affiliations

  1. Department of Chemistry and the Alan G. MacDiarmid Nanotech Institute, The University of Texas at Dallas, 800 west Campbell Road, 75080-3021, Richardson, TX, USA

    D. Perera Sanjaya & J. Balkus Kenneth Jr.

Authors
  1. D. Perera Sanjaya
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  2. J. Balkus Kenneth Jr.
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Sanjaya, D.P., Kenneth, J.B. TiO2 Nanotube Films via Laser Ablation for Solar Cells. MRS Online Proceedings Library 1211, 1138 (2009). https://doi.org/10.1557/PROC-1211-R11-38

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  • DOI: https://doi.org/10.1557/PROC-1211-R11-38

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