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https://repositorio.ufba.br/handle/ri/14675
metadata.dc.type: | Artigo de Periódico |
Title: | Energy-level and optical properties of nitrogen doped TiO2: An experimental and theoretical study |
Other Titles: | Applied Physics Letters |
Authors: | Meira, M. V. Castro Almeida, J. Souza de Borrero, P. P. González Bernabé, H. S. Astrath, N. G. C. Bento, Antonio Carlos Baesso, Mauro Luciano Silva, A. Ferreira da |
metadata.dc.creator: | Meira, M. V. Castro Almeida, J. Souza de Borrero, P. P. González Bernabé, H. S. Astrath, N. G. C. Bento, Antonio Carlos Baesso, Mauro Luciano Silva, A. Ferreira da |
Abstract: | Photoacoustic spectroscopy was used to study nitrogen-doped titanium dioxide film. The energy positions of defect and impurity centre levels are reported. The energy levels were obtained using the excitation method and the mechanisms of the photoacoustic signal generation are discussed. The visible light absorption of the yellow film was explained considering electronic transitions between localized states within the band gap and the transitions from these states into the conduction band. Moreover, first principles calculations revealed that nitrogen doping and oxygen vacancies in titanium dioxide induce defect levels within the gap which account for the absorption in the visible light. |
metadata.dc.publisher.country: | Brasil |
metadata.dc.rights: | Acesso Aberto |
URI: | http://repositorio.ufba.br/ri/handle/ri/14675 |
Issue Date: | 2011 |
Appears in Collections: | Artigo Publicado em Periódico (FIS) |
Files in This Item:
File | Description | Size | Format | |
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M. V. Castro Meira.pdf | 489,34 kB | Adobe PDF | View/Open |
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