Cathodoluminescence emission study of nanostructured SnO2 films deposited by spray pyrolysis
In this paper the results of cathodoluminescence (CL) emission study of undoped and doped SnO films are discussed. SnO films were deposited by spray pyrolysis method. It was shown that the study of CL emission is effective method for structural characterization of metal oxides aimed to gas sen...
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| Autores principales: | , , |
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| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
D.Ghitu Institute of Electronic Engineering and Nanotechnologies
2008
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| Materias: | |
| Acceso en línea: | https://doaj.org/article/fa0b8cb979c44524bd2d314ca1eb35f5 |
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| Sumario: | In this paper the results of cathodoluminescence (CL) emission study of undoped and
doped SnO films are discussed. SnO films were deposited by spray pyrolysis method. It was
shown that the study of CL emission is effective method for structural characterization of
metal oxides aimed to gas sensor applications. It was concluded that the changes taking place
in CL spectra are connected with the change of both the grain size and the crystallinity (stoichiometry) of the surface layer and the bulk of SnO . The shape of CL spectra depends
on correlation between well-crystallized core and disordered surface layer. It was found that
doping is accompanied by deterioration of film crystallinity and the growth of concentration
of structural defects responsible for unradiative recombination of excited electrons and holes. |
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