Formation of high-conductivity regions in nanostructured SnO2-AOx (A = Ti4+, Zr4+, Sb3+, Sb5+) films exposed to UV radiation or H2

Postovalova, G. G.; Roginskaya, Yu. E.; Zav’yalov, S. A.; Galyamov, B. Sh.; Klimasenko, N. L.

doi:10.1007/bf02758083

Cited by 2 publications

(2 citation statements)

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“…1 For measurements we used mechanically sharpened tips of Pt-Ir (10 wt %) wire 0.5 mm in diameter. Before embarking on spectroscopic measurements, as a rule we would obtain topographic STM images of satisfactory quality, then at selected points of a surface measured several (5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20) spectra, which were averaged or selected most "typical" curves from the obtained mass of data. Base values of the tunneling current and voltage (corresponding to an equilibrium position of the tip in the course of topographic measurements and before the beginning of spectroscopic measurements) for samples of various nature are given in captions to relevant figures.…”

Section: Methodsmentioning

confidence: 99%

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Voltage-Height Spectroscopy in the Ex Situ Configuration of a Scanning Tunneling Microscope

Yusipovich

Vassiliev

2005

Russ J Electrochem

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Basic regularities of electrochemical processes in the gap of an ex situ scanning tunneling microscope in conditions of condensation of air moisture at the sample surface are considered on a qualitative level. A layer of condensed moisture is viewed as an electrolyte in a two-electrode cell. The depolarizers present in this layer may experience electrochemical conversions on the tip and in an area of the sample surface near the tip. As a result, the recorded "tunneling" current includes electrochemical constituents. Depending on the electrochemical processes in the gap, various dependences of the tip-sample distance on the current and applied voltage can be expected. For preliminary diagnostics of processes in the gap it is suggested to use voltageheight spectra, whose shape and characteristic heights are sensitive to the nature and location of redox active species. Experimental data for various films on conducting supports (quasi-two-dimensional adsorbed layers of hemin and peroxidase, electrodeposited nonstoichiometric tungsten oxides, doped tin dioxide, solid electrolyte with ionic conduction) are presented as an examples.

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Section: Methodsmentioning

confidence: 99%

“…Nanoheterogeneous titanium-doped oxides based on tin dioxide were synthesized by thermohydrolytic decomposition of salts via the procedure [10], the annealing of the samples was performed at a temperature of 450°ë . Composite systems CsHSO 4 -SnO 2 were manufactured by pressing out of mechanical mixtures of components [11].…”

Section: Preparation Of Samplesmentioning

confidence: 99%