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High-temperature deep-level transient spectroscopy system for defect studies in wide-bandgap semiconductors
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
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2019 (English)In: Review of Scientific Instruments, ISSN 0034-6748, E-ISSN 1089-7623, Vol. 90, no 6, article id 063903Article in journal (Refereed) Published
Abstract [en]

Full investigation of deep defect states and impurities in wide-bandgap materials by employing commercial transient capacitance spectroscopy is a challenge, demanding very high temperatures. Therefore, a high-temperature deep-level transient spectroscopy (HT-DLTS) system was developed for measurements up to 1100 K. The upper limit of the temperature range allows for the study of deep defects and trap centers in the bandgap, deeper than previously reported by DLTS characterization in any material. Performance of the system was tested by carrying out measurements on the well-known intrinsic defects in n-type 4H-SiC in the temperature range 300-950 K. Experimental observations performed on 4H-SiC Schottky diodes were in good agreement with the literature. However, the DLTS measurements were restricted by the operation and quality of the electrodes.

Place, publisher, year, edition, pages
AMER INST PHYSICS , 2019. Vol. 90, no 6, article id 063903
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:uu:diva-390641DOI: 10.1063/1.5097755ISI: 000474601100062PubMedID: 31255019OAI: oai:DiVA.org:uu-390641DiVA, id: diva2:1343802
Funder
Carl Tryggers foundation , 13:284Magnus Bergvall FoundationAvailable from: 2019-08-19 Created: 2019-08-19 Last updated: 2019-08-19Bibliographically approved

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Majdi, SamanGabrysch, MarkusSuntornwipat, NattakarnBurmeister, FlorianKumar Kovi, KiranHallen, Anders

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Majdi, SamanGabrysch, MarkusSuntornwipat, NattakarnBurmeister, FlorianKumar Kovi, KiranHallen, Anders
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