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Low Density of Near-Interface Traps at the Al2O3/4H-SiC Interface with Al2O3 Made by Low Temperature Oxidation of Al
Science Institute, University of Iceland, IS-107 Reykjavík, Iceland.
Linköpings universitet, Institutionen för fysik, kemi och biologi, Halvledarmaterial. Linköpings universitet, Tekniska fakulteten. Science Institute, University of Iceland, IS-107 Reykjavík, Iceland.
Department of Microtechnology and Nanoscience, Chalmers University of Technology, SE-41296 Göteborg, Sweden.
Linköpings universitet, Institutionen för fysik, kemi och biologi, Halvledarmaterial. Linköpings universitet, Tekniska fakulteten.
Vise andre og tillknytning
2017 (engelsk)Inngår i: Silicon Carbide and Related Materials 2016, Trans Tech Publications Ltd , 2017, Vol. 897, s. 135-138Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

We report on a very low density (<5×1011 cm-2) of near-interface traps (NITs) at the Al2O3/4H-SiC interface estimated from capacitance-voltage (CV) analysis of MOS capacitors at different temperatures. The aluminum oxide (Al2O3) is grown by repeated deposition and subsequent low temperature (200°C) oxidation for 5 min of thin (1-2 nm) Al layers using a hot plate. We refer to this simple method as hot plate Al2O3. It is observed that the density of NITs is significantly lower in the hot plate Al2O3 samples than in samples with Al2O3 grown by atomic layer deposition (ALD) at 300°C and in reference samples with thermally grown silicon dioxide grown in O2 or N2O ambient.

sted, utgiver, år, opplag, sider
Trans Tech Publications Ltd , 2017. Vol. 897, s. 135-138
Serie
Materials Science Forum
Emneord [en]
Gate Dielectrics, Aluminum Oxide, Interface States, Near-Interface Traps (NITs)
HSV kategori
Identifikatorer
URN: urn:nbn:se:liu:diva-160907DOI: 10.4028/www.scientific.net/MSF.897.135Scopus ID: 2-s2.0-85020132120OAI: oai:DiVA.org:liu-160907DiVA, id: diva2:1360839
Konferanse
11th European Conference on Silicone Carbide & Related Materials, Halkidiki, Greece, 25-29 September, 2016
Tilgjengelig fra: 2019-10-14 Laget: 2019-10-14 Sist oppdatert: 2019-10-24bibliografisk kontrollert

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