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Investigation of thermal properties in fabricated 4H-SiC high-power bipolar transistors
KTH, Dept Microelect & Informat Technol, SE-16440 Kista, Sweden Linkoping Univ, Dept Phys & Measurement Technol, SE-58183 Linkoping, Sweden.
KTH, Dept Microelect & Informat Technol, SE-16440 Kista, Sweden Linkoping Univ, Dept Phys & Measurement Technol, SE-58183 Linkoping, Sweden.
Linköpings universitet, Tekniska högskolan. Linköpings universitet, Institutionen för fysik, kemi och biologi, Halvledarmaterial.
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2002 (Engelska)Ingår i: Materials Science Forum, Vols. 389-393, 2002, Vol. 389-3, s. 1337-1340Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

Silicon Carbide bipolar junction transistors have been fabricated and investigated. The transistors had a maximum current gain of approximately 10 times, and a breakdown voltage of up to 600 V. When operated at high power densities the device showed a clear self-heating effect, decreasing the current gain. The junction temperature was extracted during self-heating to approximately 150 degreesC, using the assumption that the current gain only depends on temperature. Thermal images of a device under operation were also recorded using an infrared camera, showing a significant temperature increase in the vicinity of the device. Physical device simulations have been used to analyze the measured data. The thermal conductivity is fitted to model the measured self-heating, and the lifetime in the base is fitted against the measurement of the current gain.

Ort, förlag, år, upplaga, sidor
2002. Vol. 389-3, s. 1337-1340
Nyckelord [en]
bipolar transistors, breakdown voltage, thermal conductivity
Nationell ämneskategori
Teknik och teknologier
Identifikatorer
URN: urn:nbn:se:liu:diva-48828OAI: oai:DiVA.org:liu-48828DiVA, id: diva2:269724
Konferens
ICSCRM2001
Tillgänglig från: 2009-10-11 Skapad: 2009-10-11 Senast uppdaterad: 2010-12-07

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Forsberg, UrbanJanzén, Erik

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