Controlling the work function of a diamond-like carbon surface by fluorination with XeF2
- Autores
- Tarditi, Ana Maria; Kondratyuk, Petro; Wong, Pak Kin; Gellman, Andrew J.
- Año de publicación
- 2010
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Thin diamond-like carbon films were subjected to fluorination with gaseous XeF2 under ultrahigh vacuum conditions in order to increase the work function of the diamond-like carbon surface. Changes in the work function and surface composition were monitored with UV photoemission spectroscopy (UPS) and x-ray photoemission spectroscopy (XPS), respectively. Successive XeF2 exposures raised the work function by as much as 1.55 eV. Surprisingly, approximately half of the increase in the work function occurred while the coverage of fluorine remained below 0.02 monolayers (ML). This suggests that initial doses of XeF2 remove extrinsic adsorbates from the diamond-like carbon film and that fluorine desorbs with the reaction products. Increasing the exposure of the diamond-like carbon to XeF2 leads to the expected covalent fluorination of the surface, which saturates at fluorine coverages of 6 F atoms/nm2 (~0.3 ML). Annealing of the diamond-like carbon to temperatures above 850 K was required to reduce the surface fluorine concentration to undetectable levels. This did not, however, cause the work function to return to its original, pre-fluorination value.
Fil: Tarditi, Ana Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
Fil: Kondratyuk, Petro. University of Carnegie Mellon; Estados Unidos
Fil: Wong, Pak Kin. Sae Technology Centre; China
Fil: Gellman, Andrew J.. University of Carnegie Mellon; Estados Unidos. Institute For Advanced Energy Studies; - Materia
-
diamond-like carbon
XeF2
work function - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/54029
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Controlling the work function of a diamond-like carbon surface by fluorination with XeF2Tarditi, Ana MariaKondratyuk, PetroWong, Pak KinGellman, Andrew J.diamond-like carbonXeF2work functionhttps://purl.org/becyt/ford/2.5https://purl.org/becyt/ford/2Thin diamond-like carbon films were subjected to fluorination with gaseous XeF2 under ultrahigh vacuum conditions in order to increase the work function of the diamond-like carbon surface. Changes in the work function and surface composition were monitored with UV photoemission spectroscopy (UPS) and x-ray photoemission spectroscopy (XPS), respectively. Successive XeF2 exposures raised the work function by as much as 1.55 eV. Surprisingly, approximately half of the increase in the work function occurred while the coverage of fluorine remained below 0.02 monolayers (ML). This suggests that initial doses of XeF2 remove extrinsic adsorbates from the diamond-like carbon film and that fluorine desorbs with the reaction products. Increasing the exposure of the diamond-like carbon to XeF2 leads to the expected covalent fluorination of the surface, which saturates at fluorine coverages of 6 F atoms/nm2 (~0.3 ML). Annealing of the diamond-like carbon to temperatures above 850 K was required to reduce the surface fluorine concentration to undetectable levels. This did not, however, cause the work function to return to its original, pre-fluorination value.Fil: Tarditi, Ana Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; ArgentinaFil: Kondratyuk, Petro. University of Carnegie Mellon; Estados UnidosFil: Wong, Pak Kin. Sae Technology Centre; ChinaFil: Gellman, Andrew J.. University of Carnegie Mellon; Estados Unidos. Institute For Advanced Energy Studies;A V S Amer Inst Physics2010-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/54029Tarditi, Ana Maria; Kondratyuk, Petro; Wong, Pak Kin; Gellman, Andrew J.; Controlling the work function of a diamond-like carbon surface by fluorination with XeF2; A V S Amer Inst Physics; Journal Of Vacuum Science & Technology A - Vacuum Surfaces And Films; 28; 7-2010; 1250-12540734-2101CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1116/1.3480335info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:37:34Zoai:ri.conicet.gov.ar:11336/54029instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:37:34.986CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Controlling the work function of a diamond-like carbon surface by fluorination with XeF2 |
title |
Controlling the work function of a diamond-like carbon surface by fluorination with XeF2 |
spellingShingle |
Controlling the work function of a diamond-like carbon surface by fluorination with XeF2 Tarditi, Ana Maria diamond-like carbon XeF2 work function |
title_short |
Controlling the work function of a diamond-like carbon surface by fluorination with XeF2 |
title_full |
Controlling the work function of a diamond-like carbon surface by fluorination with XeF2 |
title_fullStr |
Controlling the work function of a diamond-like carbon surface by fluorination with XeF2 |
title_full_unstemmed |
Controlling the work function of a diamond-like carbon surface by fluorination with XeF2 |
title_sort |
Controlling the work function of a diamond-like carbon surface by fluorination with XeF2 |
dc.creator.none.fl_str_mv |
Tarditi, Ana Maria Kondratyuk, Petro Wong, Pak Kin Gellman, Andrew J. |
author |
Tarditi, Ana Maria |
author_facet |
Tarditi, Ana Maria Kondratyuk, Petro Wong, Pak Kin Gellman, Andrew J. |
author_role |
author |
author2 |
Kondratyuk, Petro Wong, Pak Kin Gellman, Andrew J. |
author2_role |
author author author |
dc.subject.none.fl_str_mv |
diamond-like carbon XeF2 work function |
topic |
diamond-like carbon XeF2 work function |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/2.5 https://purl.org/becyt/ford/2 |
dc.description.none.fl_txt_mv |
Thin diamond-like carbon films were subjected to fluorination with gaseous XeF2 under ultrahigh vacuum conditions in order to increase the work function of the diamond-like carbon surface. Changes in the work function and surface composition were monitored with UV photoemission spectroscopy (UPS) and x-ray photoemission spectroscopy (XPS), respectively. Successive XeF2 exposures raised the work function by as much as 1.55 eV. Surprisingly, approximately half of the increase in the work function occurred while the coverage of fluorine remained below 0.02 monolayers (ML). This suggests that initial doses of XeF2 remove extrinsic adsorbates from the diamond-like carbon film and that fluorine desorbs with the reaction products. Increasing the exposure of the diamond-like carbon to XeF2 leads to the expected covalent fluorination of the surface, which saturates at fluorine coverages of 6 F atoms/nm2 (~0.3 ML). Annealing of the diamond-like carbon to temperatures above 850 K was required to reduce the surface fluorine concentration to undetectable levels. This did not, however, cause the work function to return to its original, pre-fluorination value. Fil: Tarditi, Ana Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina Fil: Kondratyuk, Petro. University of Carnegie Mellon; Estados Unidos Fil: Wong, Pak Kin. Sae Technology Centre; China Fil: Gellman, Andrew J.. University of Carnegie Mellon; Estados Unidos. Institute For Advanced Energy Studies; |
description |
Thin diamond-like carbon films were subjected to fluorination with gaseous XeF2 under ultrahigh vacuum conditions in order to increase the work function of the diamond-like carbon surface. Changes in the work function and surface composition were monitored with UV photoemission spectroscopy (UPS) and x-ray photoemission spectroscopy (XPS), respectively. Successive XeF2 exposures raised the work function by as much as 1.55 eV. Surprisingly, approximately half of the increase in the work function occurred while the coverage of fluorine remained below 0.02 monolayers (ML). This suggests that initial doses of XeF2 remove extrinsic adsorbates from the diamond-like carbon film and that fluorine desorbs with the reaction products. Increasing the exposure of the diamond-like carbon to XeF2 leads to the expected covalent fluorination of the surface, which saturates at fluorine coverages of 6 F atoms/nm2 (~0.3 ML). Annealing of the diamond-like carbon to temperatures above 850 K was required to reduce the surface fluorine concentration to undetectable levels. This did not, however, cause the work function to return to its original, pre-fluorination value. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-07 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/54029 Tarditi, Ana Maria; Kondratyuk, Petro; Wong, Pak Kin; Gellman, Andrew J.; Controlling the work function of a diamond-like carbon surface by fluorination with XeF2; A V S Amer Inst Physics; Journal Of Vacuum Science & Technology A - Vacuum Surfaces And Films; 28; 7-2010; 1250-1254 0734-2101 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/54029 |
identifier_str_mv |
Tarditi, Ana Maria; Kondratyuk, Petro; Wong, Pak Kin; Gellman, Andrew J.; Controlling the work function of a diamond-like carbon surface by fluorination with XeF2; A V S Amer Inst Physics; Journal Of Vacuum Science & Technology A - Vacuum Surfaces And Films; 28; 7-2010; 1250-1254 0734-2101 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1116/1.3480335 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
A V S Amer Inst Physics |
publisher.none.fl_str_mv |
A V S Amer Inst Physics |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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1844614396220801024 |
score |
13.070432 |