Nanoporous TiO2 electrode grown by laser ablation of titanium in air at atmospheric pressure and room temperature

Anna Białous; Maria Gazda; Katarzyna Grochowska; P. Atanasov; Anna Dikovska; N. Nedyalkov; J. Reszczyńska; Adriana Zalewska-Medynska; Gerard Śliwiński

doi:10.1016/j.tsf.2015.10.069

Nanoporous TiO2 electrode grown by laser ablation of titanium in air at atmospheric pressure and room temperature

Abstract

Recently, fabrication of the nanoporous TiO2 photoelectrode on metal foils by means of sputtering of the Ti film on preheatedmetal substrate followed by the TiO2 deposition (doctor blade technique) and sintering represents the frequently applied technique. This is despite the relatively complicated procedure and number of parameters to be controlled in order to fabricate films of required properties. In this work an approach is applied and discussed in which the nanoporous TiO2 electrode is fabricated under conditions similar to pulsed laser deposition but with the deposit formed directly on the ablated target at atmospheric pressure and room temperature. The titanium dioxide thin film is grown by ablation of the Ti foil with the nanosecond UV laser (266 nm) at fluence up to 1.5 J/cm2. The rutile–anatase phase transformation takes place during this one-step process and no thermal pre-and post-treatment of the deposit is needed. In samples produced in air, the presence of mixed phases of the non-stoichiometric anatase (N70%), rutile and negligible amount of TiN is consistently confirmed by the X-ray diffraction, energy-dispersive X-ray and Raman spectra. For applications of the reported films as electrode material in the third generation photovoltaic cells, the use of industrial lasers could significantly improve the process efficiency.

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Authors (9)

Anna Białous
- Polish Academy of Sciences
Maria Gazda prof. dr hab. inż.
Katarzyna Grochowska
- Polish Academy of Sciences
P. Atanasov
- Bulgarian Academy of Sciences
Anna Dikovska
- Bulgarian Academy of Sciences
N. Nedyalkov
- Bulgarian Academy of Sciences
J. Reszczyńska
- University of Gdańsk
Adriana Zalewska-Medynska
- University of Gdańsk
Gerard Śliwiński prof.
- Polish Academy of Sciences

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Category:: Articles
Type:: artykuł w czasopiśmie wyróżnionym w JCR
Published in:: THIN SOLID FILMS no. 601, pages 41 - 44,
ISSN: 0040-6090
Language:: English
Publication year:: 2016
Bibliographic description:: Białous A., Gazda M., Grochowska K., Atanasov P., Dikovska A., Nedyalkov N., Reszczyńska J., Zalewska-Medynska A., Śliwiński G.: Nanoporous TiO2 electrode grown by laser ablation of titanium in air at atmospheric pressure and room temperature// THIN SOLID FILMS. -Vol. 601, (2016), s.41-44
DOI:: Digital Object Identifier (open in new tab) 10.1016/j.tsf.2015.10.069
Verified by:: Gdańsk University of Technology