Optically detected magnetic resonance studies of intrinsic defects in 6H-SiC

Nguyen, Son Tien,1953-Linköpings universitet,Tekniska högskolan,Halvledarmaterial (author)

Optically detected magnetic resonance (ODMR) was used for study of defects in n-type 6H-SiC. Four ODMR spectra related to spin S = 1 centres were observed. Two of these centres, labelled a and b, have a trigonal symmetry with the symmetry axis along the c-axis of the hexagonal crystal. For the other two centres, labelled c and d, the symmetry is lower (C1h) and the principal axis z of the g- and D-tensor is about 71 degrees off the c-axis. Based on the symmetry axes, the annealing behaviour and the intensity, these spectra are suggested to originate from different configurations of the paired centre between a silicon vacancy and a nearest-neighbour point defect (either a carbon vacancy or a silicon antisite), occupying different inequivalent sites in the 6H-SiC. These defects are non-radiative and act as efficient recombination channels in the material.

Hai, P. N. (author)
Wagner, Matthias,1969-Linköpings universitet,Tekniska högskolan,Halvledarmaterial(Swepub:liu)matwa12 (author)
Chen, Weimin,1959-Linköpings universitet,Tekniska högskolan,Funktionella elektroniska material(Swepub:liu)weich55 (author)
Ellison, A. (author)
Hallin, Christer,1963-Linköpings universitet,Tekniska högskolan,Institutionen för fysik, kemi och biologi(Swepub:liu)chrha60 (author)
Monemar, Bo,1942-Linköpings universitet,Tekniska högskolan,Halvledarmaterial(Swepub:liu)bomo46 (author)
Janzén, Erik,1954-Linköpings universitet,Tekniska högskolan,Halvledarmaterial(Swepub:liu)erija14 (author)
Linköpings universitetTekniska högskolan (creator_code:org_t)

By the author/editor: Nguyen, Son Tien ...; Hai, P. N.; Wagner, Matthias ...; Chen, Weimin, 19 ...; Ellison, A.; Hallin, Christer ...; show more...; Monemar, Bo, 194 ...; Janzén, Erik, 19 ...; show less...

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