Structure of heterosystems formed by a SnO2 film and island metal (Ag, Au, or Pd) condensate


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Abstract

We have studied the phase composition and microstructure of thin tin(IV) oxide films surfacemodified with silver, gold, and palladium nanoislands. Using high-energy electron diffraction, we have shown for the first time that the thermal oxidation of the Sn films leads to the formation of nanocrystalline multiphase SnO2 films in which the major phase is orthorhombic. Also present are (in order of decreasing content) tetragonal and cubic phases. Blocks of SnO2(O) subgrains with 〈101〉 texture contain dislocations and stacking faults, which are interpreted as layers of the tetragonal phase. It has been shown that vacuum condensation makes it possible to modify the surface of SnO2 films with noble metals and obtain homogeneous nanoisland coatings characterized by a unimodal, uniform island size distribution.

About the authors

V. M. Ievlev

Voronezh State University; Moscow State University

Email: samoylov@chem.vsu.ru
Russian Federation, Universitetskaya pl. 1, Voronezh, 394006; Moscow, 119991

S. B. Kushchev

Voronezh State Technical University

Email: samoylov@chem.vsu.ru
Russian Federation, Moskovskii pr. 14, Voronezh, 394026

A. A. Sinel’nikov

Voronezh State University

Email: samoylov@chem.vsu.ru
Russian Federation, Universitetskaya pl. 1, Voronezh, 394006

S. A. Soldatenko

Voronezh State University

Email: samoylov@chem.vsu.ru
Russian Federation, Universitetskaya pl. 1, Voronezh, 394006

S. V. Ryabtsev

Voronezh State University

Email: samoylov@chem.vsu.ru
Russian Federation, Universitetskaya pl. 1, Voronezh, 394006

M. A. Bosykh

Voronezh State Technical University

Email: samoylov@chem.vsu.ru
Russian Federation, Moskovskii pr. 14, Voronezh, 394026

A. M. Samoilov

Voronezh State University

Author for correspondence.
Email: samoylov@chem.vsu.ru
Russian Federation, Universitetskaya pl. 1, Voronezh, 394006

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