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Optical characterization of 4H-SiC by variable angle of incidence spectroscopic ellipsometry
Linkoping Univ, Dept Phys & Measurement Technol, SE-58183 Linkoping, Sweden.
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology, Applied Optics .ORCID iD: 0000-0001-9229-2028
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology, Materials Science .
Linkoping Univ, Dept Phys & Measurement Technol, SE-58183 Linkoping, Sweden.
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2000 (English)In: Materials Science Forum, ISSN 0255-5476, Vol. 338-3, 575-578 p.Article in journal (Refereed) Published
Abstract [en]

A variable angle of incidence spectroscopic ellipsometer equipped with a compensator has been used to determine the dielectric functions in the 0.74 - 6 eV photon energy range of n-type bulk 4H-SiC with doping concentrations between 10(17) and 10(19) cm(-3). The resulting dielectric function for different SiC wafers depends on the doping concentration, especially around the absorption onset and higher photon energies. Measurements on different wafers with the same doping show good reproducibility. Simulations and preliminary measurements show that ellipsometry might be useful for thickness determination of thin (<1 m) homoepitaxial films.

Place, publisher, year, edition, pages
2000. Vol. 338-3, 575-578 p.
Keyword [en]
doping concentration, ellipsometry, SiC dielectric function
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-49439OAI: oai:DiVA.org:liu-49439DiVA: diva2:270335
Available from: 2009-10-11 Created: 2009-10-11 Last updated: 2013-10-14

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Arwin, HansForsberg, UrbanJärrendahl, Kenneth

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