Nitrogen ion implanted nanostructured titania films used in dye-sensitised solar cells and photocatalyst

Tuquabo Tesfamichael; Geoffrey Will; John Bell

doi:10.1016/j.apsusc.2004.10.024

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Nitrogen ion implanted nanostructured titania films used in dye-sensitised solar cells and photocatalyst

Journal article

Peer reviewed

Nitrogen ion implanted nanostructured titania films used in dye-sensitised solar cells and photocatalyst

Tuquabo Tesfamichael, Geoffrey Will and John Bell

Applied Surface Science, Vol.245(1-4), pp.172-178

2005

DOI: https://doi.org/10.1016/j.apsusc.2004.10.024

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Abstract

N depth profiling

N ion implantation

Nanocrystalline titania

Optical properties

Surface morphology

Nanostructured titania films were implanted with N at energies between 10 and 40 keV and ion dose range 1014 to 5 × 1016 cm−2 and the films were characterized using various techniques. The surface morphology of the nanostructured films has been modified with ion implantation as observed using scanning electron microscopy (SEM). From SIMS depth profile analysis the amount of nitrogen was found to increase with increasing ion energy. The profile of N appeared to have a skewed Gaussian curve and the results have been explained using SRIM theoretical simulations. A maximum nitrogen concentration of about 6.08 at% has been quantified by X-ray photoelectron spectrometer (XPS). Transmittance of the films decreases with increasing implantation energy and ion dose due to defects created by the ion implantation. Annealing can remove defects and thereby increase the transmittance of the films.

Details

Title: Nitrogen ion implanted nanostructured titania films used in dye-sensitised solar cells and photocatalyst
Authors: Tuquabo Tesfamichael (Corresponding Author) - Queensland University of Technology
Geoffrey Will (Author) - Queensland University of Technology
John Bell (Author) - Queensland University of Technology
Publication details: Applied Surface Science, Vol.245(1-4), pp.172-178
Publisher: Elsevier BV
DOI: 10.1016/j.apsusc.2004.10.024
ISSN: 1873-5584
Organisation Unit: School of Science, Technology and Engineering
Language: English
Record Identifier: 99737878102621
Output Type: Journal article

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