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Investigation on origin of Z(1/2) center in SiC by deep level transient spectroscopy and electron paramagnetic resonance

Kawahara, Koutarou (author)
Kyoto University, Japan
Thang Trinh, Xuan (author)
Linköpings universitet,Halvledarmaterial,Tekniska högskolan
Son Tien, Nguyen (author)
Linköpings universitet,Halvledarmaterial,Tekniska högskolan
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Janzén, Erik (author)
Linköpings universitet,Halvledarmaterial,Tekniska högskolan
Suda, Jun (author)
Kyoto University, Japan
Kimoto, Tsunenobu (author)
Kyoto University, Japan
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 (creator_code:org_t)
American Institute of Physics (AIP), 2013
2013
English.
In: Applied Physics Letters. - : American Institute of Physics (AIP). - 0003-6951 .- 1077-3118. ; 102:11
  • Journal article (peer-reviewed)
Abstract Subject headings
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  • The Z(1/2) center in n-type 4H-SiC epilayers-a dominant deep level limiting the carrier lifetime-has been investigated. Using capacitance versus voltage (C-V) measurements and deep level transient spectroscopy (DLTS), we show that the Z(1/2) center is responsible for the carrier compensation in n-type 4H-SiC epilayers irradiated by low-energy (250 keV) electrons. The concentration of the Z(1/2) defect obtained by C-V and DLTS correlates well with that of the carbon vacancy (V-C) determined by electron paramagnetic resonance, suggesting that the Z(1/2) deep level originates from V-C.

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TECHNOLOGY
TEKNIKVETENSKAP

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