The Anomalous Increasing of the Anode Current in the Diode Structures

Authors G.I. Churyumov, A.I. Ekezli

Kharkov National University of Radioelectronics, 14, Lenina Av., 61166 Kharkov, Ukraine

Issue Volume 6, Year 2014, Number 1
Dates Received 03 December 2013; published online 06 April 2014
Citation G.I. Churyumov, A.I. Ekezli, J. Nano- Electron. Phys. 6 No 1, 01018 (2014)
PACS Number(s) 84.40.Fe
Keywords Diode (25) , Anode voltage, Oxide cathode, Secondary electron emission, Anode current, Magnetron (18) , Space charge region, Saturation region.
Annotation This paper discusses the issues of current flow in the diode structures with an oxide cathode. Have been analyzed of theoretical and experimental anode characteristics of cylindrical diodes with a split anode. It is shown that in the range of anode voltage greater than the maximum observed effect of spontaneous growth of the anode current and increases the discrepancy between theoretical and experimental characteristics of diode structures. It was established that at this voltage occurs electron-stimulated desorption of ions from the anode surface with subsequent bombardment of the cathode, which causes secondary electron emission and additional growth of the anode current. This process is accompanied by a considerable increase in the temperature of the anode due to electron bombardment of the surface.

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