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Carbon-vacancy rela...
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Nguyen, Son Tien,1953-Linköpings universitet,Tekniska högskolan,Halvledarmaterial
(författare)
Carbon-vacancy related defects in 4H- and 6H-SiC
- Artikel/kapitelEngelska1999
Förlag, utgivningsår, omfång ...
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Elsevier,1999
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printrdacarrier
Nummerbeteckningar
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LIBRIS-ID:oai:DiVA.org:liu-45155
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https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-45155URI
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https://doi.org/10.1016/S0921-5107(98)00502-9DOI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:ref swepub-contenttype
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Ämneskategori:kon swepub-publicationtype
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Electron paramagnetic resonance (EPR) was used to study intrinsic defects in 4H- and 6H-SiC irradiated with 2.5 MeV electrons with doses ranging from 1×1017 to 2×1018 cm−2. In p-type 4H- and 6H-SiC, the dominant EPR signal, labeled EI1, associates with a defect centre having a low symmetry and an effective electron spin S=1/2. For both polytypes, its g-tensor was determined as gz=2.0015, gx=1.9962 and gy=2.0019, where gz and gx lie in the (11Image 0) plane and the z-axis makes an angle not, vert, similar41 degrees with the c-axis. Hyperfine interaction with a 29Si atom located at two equivalent sites in the nearest neighbour shell was detected, confirming that the defect resides at the carbon site. In heavily irradiated 4H- and 6H-SiC, a new EPR spectrum having an electron spin S=1, labeled EI3, was observed. In both polytypes, the EI3 centre has a low symmetry, an isotropic g-value of 2.0063 and a fine structure parameter |D|not, vert, similar5.5×10−2 cm−1. The observed hyperfine interaction with four 29Si atoms in the nearest neighbour shell confirms the involvement of the carbon vacancy in the defect. The defect is suggested to be a complex centre involving a carbon vacancy.
Ämnesord och genrebeteckningar
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NATURAL SCIENCES
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NATURVETENSKAP
Biuppslag (personer, institutioner, konferenser, titlar ...)
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Chen, Weimin,1959-Linköpings universitet,Tekniska högskolan,Funktionella elektroniska material(Swepub:liu)weich55
(författare)
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Lindström, J. L.
(författare)
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Monemar, Bo,1942-Linköpings universitet,Tekniska högskolan,Halvledarmaterial(Swepub:liu)bomo46
(författare)
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Janzén, Erik,1954-Linköpings universitet,Tekniska högskolan,Halvledarmaterial(Swepub:liu)erija14
(författare)
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Linköpings universitetTekniska högskolan
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:Materials Science and Engineering B, Vol. 61-62: Elsevier, s. 202-
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