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 |
|---|---|
| Pages (from-to) | 7511-7519 |
| Number of pages | 9 |
| Journal | Acta Materialia |
| Volume | 61 |
| Issue number | 19 |
| DOIs | |
| Publication status | Published - 2013 Nov 1 |
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All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Ceramics and Composites
- Polymers and Plastics
- Metals and Alloys
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Electronic and luminescence properties of sputter-deposited TiO2 nanostructures. / Chang, Yu Ming; Mishra, Dillip K.; Ting, Jyh-Ming.
In: Acta Materialia, Vol. 61, No. 19, 01.11.2013, p. 7511-7519.Research output: Contribution to journal › Article
TY - JOUR
T1 - Electronic and luminescence properties of sputter-deposited TiO2 nanostructures
AU - Chang, Yu Ming
AU - Mishra, Dillip K.
AU - Ting, Jyh-Ming
PY - 2013/11/1
Y1 - 2013/11/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84885670624&partnerID=8YFLogxK
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U2 - 10.1016/j.actamat.2013.08.066
DO - 10.1016/j.actamat.2013.08.066
M3 - Article
VL - 61
SP - 7511
EP - 7519
JO - Acta Materialia
JF - Acta Materialia
SN - 1359-6454
IS - 19
ER -