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Time-resolved photoluminescence of deep centers in semi-insulating 4H-SiC
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology, Semiconductor Materials.
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology, Semiconductor Materials.
2003 (English)In: Materials Science Forum, Vols. 433-436, 2003, Vol. 433-4, 301-304 p.Conference paper, Published paper (Refereed)
Abstract [en]

Deep levels (V, Cr, UD-1 and UD-3) have been studied with time resolved photoluminescence. The decay time is determined as 193 ns, 58 mus, 247 ns and 51.5 mus for the V, Cr, UD-1 and UD-3 centers, respectively, at low temperature (2 K). The relatively long decay times indicate that the radiative recombination is dominant at low temperatures. By fitting the temperature dependence of the decay time, the activation energies of the V and UD-1 centers are determined as 160 meV and 50 meV respectively.

Place, publisher, year, edition, pages
2003. Vol. 433-4, 301-304 p.
Keyword [en]
deep center, semi-insulating, time-resolved photoluminescence
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-48541OAI: oai:DiVA.org:liu-48541DiVA: diva2:269437
Conference
ECSCRM2002
Available from: 2009-10-11 Created: 2009-10-11 Last updated: 2010-12-06

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Magnusson, BjörnJanzén, Erik

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