The same chemical state of carbon gives rise to two peaks in X-ray photoelectron spectroscopy

Abstract Chemical state analysis in X-ray photoelectron spectroscopy (XPS) relies on assigning well-defined binding energy values to core level electrons originating from atoms in particular bonding configurations. Here, we present direct evidence for the violation of this paradigm. It is shown that...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	G. Greczynski, L. Hultman
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/7ad01f7731cf40e39334757f4e029954
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:7ad01f7731cf40e39334757f4e029954
record_format	dspace
spelling	oai:doaj.org-article:7ad01f7731cf40e39334757f4e0299542021-12-02T16:53:01ZThe same chemical state of carbon gives rise to two peaks in X-ray photoelectron spectroscopy10.1038/s41598-021-90780-92045-2322https://doaj.org/article/7ad01f7731cf40e39334757f4e0299542021-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-90780-9https://doaj.org/toc/2045-2322Abstract Chemical state analysis in X-ray photoelectron spectroscopy (XPS) relies on assigning well-defined binding energy values to core level electrons originating from atoms in particular bonding configurations. Here, we present direct evidence for the violation of this paradigm. It is shown that the C 1s peak due to C–C/C–H bonded atoms from adventitious carbon (AdC) layers accumulating on Al and Au foils splits into two distinctly different contributions, as a result of vacuum level alignment at the AdC/foil interface. The phenomenon is observed while simultaneously recording the spectrum from two metal foils in electric contact with each other. This finding exposes fundamental problems with the reliability of reported XPS data as C 1s peak of AdC is routinely used for binding energy scale referencing. The use of adventitious carbon in XPS should thus be discontinued as it leads to nonsense results. Consequently, ISO and ASTM charge referencing guides need to be rewritten.G. GreczynskiL. HultmanNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-5 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q G. Greczynski L. Hultman The same chemical state of carbon gives rise to two peaks in X-ray photoelectron spectroscopy
description	Abstract Chemical state analysis in X-ray photoelectron spectroscopy (XPS) relies on assigning well-defined binding energy values to core level electrons originating from atoms in particular bonding configurations. Here, we present direct evidence for the violation of this paradigm. It is shown that the C 1s peak due to C–C/C–H bonded atoms from adventitious carbon (AdC) layers accumulating on Al and Au foils splits into two distinctly different contributions, as a result of vacuum level alignment at the AdC/foil interface. The phenomenon is observed while simultaneously recording the spectrum from two metal foils in electric contact with each other. This finding exposes fundamental problems with the reliability of reported XPS data as C 1s peak of AdC is routinely used for binding energy scale referencing. The use of adventitious carbon in XPS should thus be discontinued as it leads to nonsense results. Consequently, ISO and ASTM charge referencing guides need to be rewritten.
format	article
author	G. Greczynski L. Hultman
author_facet	G. Greczynski L. Hultman
author_sort	G. Greczynski
title	The same chemical state of carbon gives rise to two peaks in X-ray photoelectron spectroscopy
title_short	The same chemical state of carbon gives rise to two peaks in X-ray photoelectron spectroscopy
title_full	The same chemical state of carbon gives rise to two peaks in X-ray photoelectron spectroscopy
title_fullStr	The same chemical state of carbon gives rise to two peaks in X-ray photoelectron spectroscopy
title_full_unstemmed	The same chemical state of carbon gives rise to two peaks in X-ray photoelectron spectroscopy
title_sort	same chemical state of carbon gives rise to two peaks in x-ray photoelectron spectroscopy
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/7ad01f7731cf40e39334757f4e029954
work_keys_str_mv	AT ggreczynski thesamechemicalstateofcarbongivesrisetotwopeaksinxrayphotoelectronspectroscopy AT lhultman thesamechemicalstateofcarbongivesrisetotwopeaksinxrayphotoelectronspectroscopy AT ggreczynski samechemicalstateofcarbongivesrisetotwopeaksinxrayphotoelectronspectroscopy AT lhultman samechemicalstateofcarbongivesrisetotwopeaksinxrayphotoelectronspectroscopy
_version_	1718382868545142784

The same chemical state of carbon gives rise to two peaks in X-ray photoelectron spectroscopy

Ejemplares similares