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Energy-level and optical properties of nitrogen doped TiO2: An experimental and theoretical study
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10.1063/1.3664104
/content/aip/journal/apl/99/22/10.1063/1.3664104
http://aip.metastore.ingenta.com/content/aip/journal/apl/99/22/10.1063/1.3664104
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Figures

Image of FIG. 1.
FIG. 1.

(Color online) Room temperature PA signal of the TiO2− x N x film as a function of photon energy. The continuous line represents the typical PA signal. The other curves stand for PA signal under both modulated and continuous excitation with 100 mW at 2.71 eV (dash) and 120 mW at 3.54 eV (dot) excitation. The direct optical band gap Eg = (2.55 ± 0.05) eV is obtained from the crossing point of PA signal with and without continuous excitation. For comparison, the calculated absorption spectra for TiO2, TiO1.96N0.04, and TiO1.92N0.04 were also included.

Image of FIG. 2.
FIG. 2.

(Color online) DOS for TiO2, TiO1.96N0.04, and TiO1.92N0.04. It shows the electronic transitions for the processes induced by UV-VIS irradiation of the N-doped TiO2− x N x film. The valence band maximum (VBM) of TiO2 is set to zero energy and it is indicated by a vertical dashed line.

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/content/aip/journal/apl/99/22/10.1063/1.3664104
2011-11-30
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Energy-level and optical properties of nitrogen doped TiO2: An experimental and theoretical study
http://aip.metastore.ingenta.com/content/aip/journal/apl/99/22/10.1063/1.3664104
10.1063/1.3664104
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