The role of oxygen vacancy in the photoluminescence property at room temperature of the CaTiO(3)
| Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
|---|---|
| Data(s) |
19/04/2012
19/04/2012
2009
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| Resumo |
In this paper, electron paramagnetic resonance, photoluminescence (PL) emission, and quantum mechanical calculations were used to observe and understand the structural order-disorder of CaTiO(3), paying special attention to the role of oxygen vacancy. The PL phenomenon at room temperature of CaTiO(3) is directly influenced by the presence of oxygen vacancies that yield structural order-disorder. These oxygen vacancies bonded at Ti and/or Ca induce new electronic states inside the band gap. Ordered and disordered CaTiO(3) was obtained by the polymeric precursor method. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3190524] Brazilian research financing Institutions FAPESP/CEPID[98/14324-0] CNPq Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES) |
| Identificador |
JOURNAL OF APPLIED PHYSICS, v.106, n.4, 2009 0021-8979 http://producao.usp.br/handle/BDPI/16465 10.1063/1.3190524 |
| Idioma(s) |
eng |
| Publicador |
AMER INST PHYSICS |
| Relação |
Journal of Applied Physics |
| Direitos |
openAccess Copyright AMER INST PHYSICS |
| Palavras-Chave | #THIN-FILMS #STRONTIUM-TITANATE #PHASE-TRANSITIONS #DOPED BATIO3 #DISORDER #PEROVSKITES #SRTIO3 #DENSITY #PBTIO3 #ENERGY #Physics, Applied |
| Tipo |
article original article publishedVersion |
