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Effect of Increased Oxide Hole Trap Density due to Nitrogen Incorporation at the SiO2/SiC Interface on F-N Current Degradation

Journal Materials Science Forum (Volumes 679 - 680)
Volume Silicon Carbide and Related Materials 2010
Edited by Edouard V. Monakhov, Tamás Hornos and Bengt. G. Svensson
Pages 382-385
DOI 10.4028/www.scientific.net/MSF.679-680.382
Citation Christian Strenger et al., 2011, Materials Science Forum, 679-680, 382
Online since March, 2011
Authors Christian Strenger, Anton J. Bauer, Heiner Ryssel
Keywords Charge, FN, Fowler-Nordheim, Interface, N2O, Nitrogen, Oxide, Silicon Carbide (SiC), SiO2
Abstract

Metal-oxide-semiconductor (MOS) capacitors were formed on 4H-silicon carbide (SiC) using thermally grown silicon dioxide (SiO2) as gate dielectrics, both with and without nitrogen incorporation within the oxide. The field dependence of the charge trapping properties of these structures was analyzed and linked to the observed Fowler-Nordheim current degradation. Furthermore, first considerations were presented that indicate an electron impact emission induced generation of positive oxide trapped charge.

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