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Nanosystems: Physics, Chemistry, Mathematics, 2012 Volume 3, Issue 2, Pages 116–138 (Mi nano679)

CHEMISTRY

The catalytic action of vanadium and its oxide (V) in the oxidation processes of A$^{\mathrm{III}}$ B$^{\mathrm{V}}$ semiconductors

I. Ya. Mittova, E. V. Tomina, A. A. Lapenko, B. V. Sladkopevtsev

Voronezh State University, Воронеж, Россия

Abstract: The catalytic synchronous mechanism effect of deposited nanoscale layers of chemostimulaters V and V$_2$O$_5$ on the surface of InP and GaAs in the process of thermal oxidation these semiconductors was established. The proof of this mechanism is a abrupt decline in the effective activation energy of processes, a significant increase in the rate of film growth compared with its own oxidation, regeneration of active particles containing V$^{+5}$ (data of XRD, IRS, AES), the independence of the kinetic parameters of oxidation processes on the amount of applied catalyst. Thermal oxidation of InP in the presence of nanoislands of V$_2$O$_5$ in the initial stage of the process occurs mainly in those catalytically active centers (accordingly to the data of SEM, AES).

Keywords: heterostructure, chemical stimulated oxidation, transit, catalysis, gallium arsenide, indium phosphide.

UDC: 542.943:546.881



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