<div class="csl-bib-body">
<div class="csl-entry">Stöger-Pollach, M., & Schattschneider, P. (2007). The influence of relativistic energy losses on bandgap determination using valence EELS. <i>Ultramicroscopy</i>, <i>107</i>(12), 1178–1185. https://doi.org/10.1016/j.ultramic.2007.01.015</div>
</div>
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dc.identifier.issn
0304-3991
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/169064
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dc.description.abstract
The influence of relativistic energy losses on bandgap determination using valence EELS
M. Stöger-Pollach a and P. Schattschneider a
a University Service Center for Transmission Electron Microscopy, Technische Universität Wien, Wiedner Hauptstraße 8-10, A-1040 Wien, Austria
Abstract
Since monochromated transmission electron microscopes have become available, the determination of bandgaps and optical properties using electron energy loss spectrometry (EELS) has again attracted interest. The underlying idea is very simple: below the bandgap energy no transitions can contribute to the valence EELS signal. However, the bandgap cannot be directly read out from the recorded data. Therefore the optical properties cannot be determined correctly from the low loss using the Kramers-Kronig relations. We will discuss under which conditions relativistic effects may be surpressed. It is demonstrated that scanning TEM (STEM) geometry is not applicable for most bandgap measurements.
en
dc.language.iso
en
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dc.publisher
ELSEVIER
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dc.relation.ispartof
Ultramicroscopy
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dc.subject
Electronic, Optical and Magnetic Materials
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dc.subject
Atomic and Molecular Physics, and Optics
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dc.subject
Semiconductors
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dc.subject
Instrumentation
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dc.subject
EELS
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dc.subject
Bandgap
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dc.subject
Kramers-Kronig
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dc.title
The influence of relativistic energy losses on bandgap determination using valence EELS
en
dc.type
Artikel
de
dc.type
Article
en
dc.description.startpage
1178
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dc.description.endpage
1185
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dc.type.category
Original Research Article
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tuw.container.volume
107
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tuw.container.issue
12
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tuw.journal.peerreviewed
true
-
tuw.peerreviewed
true
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tuw.researchTopic.id
M2
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tuw.researchTopic.name
Materials Characterization
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tuw.researchTopic.value
100
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dcterms.isPartOf.title
Ultramicroscopy
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tuw.publication.orgunit
E057-02 - Fachbereich Universitäre Serviceeinrichtung für Transmissions- Elektronenmikroskopie
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tuw.publication.orgunit
E138-03 - Forschungsbereich Functional and Magnetic Materials
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tuw.publisher.doi
10.1016/j.ultramic.2007.01.015
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dc.identifier.eissn
1879-2723
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dc.description.numberOfPages
8
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wb.sci
true
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wb.sciencebranch
Physik, Mechanik, Astronomie
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wb.sciencebranch.oefos
12
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item.languageiso639-1
en
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item.openairetype
research article
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item.grantfulltext
none
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item.fulltext
no Fulltext
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item.cerifentitytype
Publications
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item.openairecristype
http://purl.org/coar/resource_type/c_2df8fbb1
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crisitem.author.dept
E057-02 - Fachbereich Universitäre Serviceeinrichtung für Transmissions- Elektronenmikroskopie
