Cathodoluminescence emission study of nanostructured SnO2 films deposited by spray pyrolysis

Korotchenkov Ghenadii; Han Sang Do; Nazarov Michael V.; Noh Do Young

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KOROTCHENKOV, Ghenadii, HAN, Sang Do, NAZAROV, Michael V., NOH, Do Young. Cathodoluminescence emission study of nanostructured SnO2 films deposited by spray pyrolysis. In: Moldavian Journal of the Physical Sciences, 2008, nr. 1(7), pp. 48-54. ISSN 1810-648X.

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Moldavian Journal of the Physical Sciences

Numărul 1(7) / 2008 / ISSN 1810-648X /ISSNe 2537-6365

Cathodoluminescence emission study of nanostructured SnO2 films deposited by spray pyrolysis

Pag. 48-54

Korotchenkov Ghenadii¹, Han Sang Do², Nazarov Michael V.³, Noh Do Young⁴

¹ Technical University of Moldova,
² Korea Institute of Industrial Technology,
³ Institute of the Electronic Engineering and Nanotechnologies "D. Ghitu" of the Academy of Sciences of Moldova,
⁴ Gwangju Institute of Science and Technology, Gwangju

Disponibil în IBN: 26 noiembrie 2013

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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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