Metal-semiconductor transition in nonstoichiometric vanadium dioxide films

被引:28
|
作者
Berezina, O. Ya. [1 ]
Velichko, A. A. [1 ]
Lugovskaya, L. A. [1 ]
Pergaunent, A. L. [1 ]
Stefanovich, G. B. [1 ]
机构
[1] Petrozavodsk State Univ, Petrozavodsk 185910, Karelia, Russia
关键词
D O I
10.1134/S0020168507050123
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Undoped and tungsten-doped nonstoichiometric vanadium dioxide films have been prepared by a modified sol-gel process, and the effect of synthesis conditions on the parameters of the metal-semiconductor transition in the films has been studied. In particular, it is shown that the temperature of the metal-semiconductor transition in vanadium dioxide decreases with increasing W content and that no phase transition occurs at doping levels above 6 at %. The composition of the films has been evaluated by x-ray diffraction, and their surface morphology has been examined by atomic force microscopy. The parameters of electrical switching in the films can be stabilized by reducing the transition temperature.
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页码:505 / 511
页数:7
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