Abstract
TiO2 nanostructures are synthesized here by a radiofrequency magnetron sputter deposition technique using tin as a catalyst. The catalyst seeding and the sputter deposition are performed at ambient temperature. The growth of TiO2 is carried out in a mixed Ar + O2 and Ar + N2 atmosphere and is found to comprise pure anatase. The morphologies of the obtained TiO2 nanostructures are characterized using scanning electron microscopy. The electronic structures are investigated by X-ray absorption near-edge structure spectroscopy. The chemical compositions are analyzed using X-ray photoelectron spectra analysis, which indicates the presence of Ti3+. The luminescence properties are examined using cathodoluminescence spectroscopy. Five peaks are resolved from the luminescence data, indicating emissions of oxygen vacancies, F, F+, band-to-band emission and self-trapped excitons on TiO6.
Original language | English |
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Pages (from-to) | 7511-7519 |
Number of pages | 9 |
Journal | Acta Materialia |
Volume | 61 |
Issue number | 19 |
DOIs | |
Publication status | Published - 2013 Nov |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Ceramics and Composites
- Polymers and Plastics
- Metals and Alloys