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Effects of nitrogenmonoxide on 4H-SiC(0 0 0 1)
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology, Materials Science .
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology.
2003 (English)In: Surface Science, ISSN 0039-6028, E-ISSN 1879-2758, Vol. 530, no 1-2, 17-25 p.Article in journal (Refereed) Published
Abstract [en]

Effects induced by nitrogenmonoxide (NO) exposures on the v3 × v3 R30° reconstructed 4H-SiC(0 0 0 1) surface are reported. NO exposures from 0.3 to 1 × 106 L at a substrate temperature of 800 °C are investigated. Recorded Si2p spectra show three shifted components, besides the bulk SiC peak. These are assigned to originate from SiO2, N-Si-O and Si3N4/Si+1 (since we cannot distinguish between Si3N4 and an Si+1 oxidation state). It can be concluded that SiO2 does grow on top of N-Si-O and that Si3N4/Si+1 is located at the interface. Two N1s components are observed after NO exposures. A main one, located at around 398.05 eV, assigned to originate from Si3N4 and a weaker one suggested to correspond to N-Si-O bonding. The assignments are made using Si2p and N1s spectra collected after NH3 and O2 exposures under similar conditions. No graphite like carbon or carbon by-product at the interface can be detected after large NO or O2 exposures. © 2003 Elsevier Science B.V. All rights reserved.

Place, publisher, year, edition, pages
2003. Vol. 530, no 1-2, 17-25 p.
Keyword [en]
Nitrides, Nitrogen oxides, Oxidation, Silicon, Silicon carbide
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-46659DOI: 10.1016/S0039-6028(03)00389-3OAI: oai:DiVA.org:liu-46659DiVA: diva2:267555
Available from: 2009-10-11 Created: 2009-10-11 Last updated: 2017-12-13

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Virojanadara, ChariyaJohansson, Leif

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