Growth and characterization of ultrathin Pt films on Cu(111)

U. Schröder; R. Linke; J. H. Boo; K. Wandelt

doi:10.1016/0039-6028(96)00283-X

Growth and characterization of ultrathin Pt films on Cu(111)

U. Schröder, R. Linke, J. H. Boo, K. Wandelt

University of Bonn

Research output: Contribution to journal › Article › peer-review

17 Scopus citations

Abstract

The growth of ultrathin Pt films on the Cu(111) surface has been investigated in the temperature range 100-500 K. Different Pt coverages between 0.1 and 2.0 ML are obtained by thermal evaporation of Pt atoms. Auger data show a layer-by-layer growth of Pt for the first two monolayers at room temperature. Moreover, the Pt films are stable below 500 K and Xe-TDS can be used as a good probe for the determination of the Pt monolayer completion. Below monolayer coverages the Xe-TD peak maximum is shifted continuously to the high temperature sides by up to 100 K while remaining constant at higher coverages. CO-TDS from Cu(111) with submonolayer Pt coverages shows that CO adsorbs in two different states attributed to CO on Pt and Cu sites. The desorption temperature of CO on Pt sites is decreased by as much as about 100 K compared to pure Pt due to the influence of the Cu substrate. HREELS results and work function measurements are used to determine the CO adsorption sites.

Original language	English
Pages (from-to)	873-878
Number of pages	6
Journal	Surface Science
Volume	357-358
DOIs	https://doi.org/10.1016/0039-6028(96)00283-X
State	Published - 20 Jun 1996
Externally published	Yes

Keywords

Carbon monoxide
Copper
Electron energy loss spectroscopy
Platinum
Thermal desorption spectroscopy
Thin films
Work function measurements
Xenon

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/0039-6028(96)00283-X

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title = "Growth and characterization of ultrathin Pt films on Cu(111)",

abstract = "The growth of ultrathin Pt films on the Cu(111) surface has been investigated in the temperature range 100-500 K. Different Pt coverages between 0.1 and 2.0 ML are obtained by thermal evaporation of Pt atoms. Auger data show a layer-by-layer growth of Pt for the first two monolayers at room temperature. Moreover, the Pt films are stable below 500 K and Xe-TDS can be used as a good probe for the determination of the Pt monolayer completion. Below monolayer coverages the Xe-TD peak maximum is shifted continuously to the high temperature sides by up to 100 K while remaining constant at higher coverages. CO-TDS from Cu(111) with submonolayer Pt coverages shows that CO adsorbs in two different states attributed to CO on Pt and Cu sites. The desorption temperature of CO on Pt sites is decreased by as much as about 100 K compared to pure Pt due to the influence of the Cu substrate. HREELS results and work function measurements are used to determine the CO adsorption sites.",

keywords = "Carbon monoxide, Copper, Electron energy loss spectroscopy, Platinum, Thermal desorption spectroscopy, Thin films, Work function measurements, Xenon",

author = "U. Schr{\"o}der and R. Linke and Boo, \{J. H.\} and K. Wandelt",

year = "1996",

month = jun,

day = "20",

doi = "10.1016/0039-6028(96)00283-X",

language = "English",

volume = "357-358",

pages = "873--878",

journal = "Surface Science",

issn = "0039-6028",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Growth and characterization of ultrathin Pt films on Cu(111)

AU - Schröder, U.

AU - Linke, R.

AU - Boo, J. H.

AU - Wandelt, K.

PY - 1996/6/20

Y1 - 1996/6/20

N2 - The growth of ultrathin Pt films on the Cu(111) surface has been investigated in the temperature range 100-500 K. Different Pt coverages between 0.1 and 2.0 ML are obtained by thermal evaporation of Pt atoms. Auger data show a layer-by-layer growth of Pt for the first two monolayers at room temperature. Moreover, the Pt films are stable below 500 K and Xe-TDS can be used as a good probe for the determination of the Pt monolayer completion. Below monolayer coverages the Xe-TD peak maximum is shifted continuously to the high temperature sides by up to 100 K while remaining constant at higher coverages. CO-TDS from Cu(111) with submonolayer Pt coverages shows that CO adsorbs in two different states attributed to CO on Pt and Cu sites. The desorption temperature of CO on Pt sites is decreased by as much as about 100 K compared to pure Pt due to the influence of the Cu substrate. HREELS results and work function measurements are used to determine the CO adsorption sites.

AB - The growth of ultrathin Pt films on the Cu(111) surface has been investigated in the temperature range 100-500 K. Different Pt coverages between 0.1 and 2.0 ML are obtained by thermal evaporation of Pt atoms. Auger data show a layer-by-layer growth of Pt for the first two monolayers at room temperature. Moreover, the Pt films are stable below 500 K and Xe-TDS can be used as a good probe for the determination of the Pt monolayer completion. Below monolayer coverages the Xe-TD peak maximum is shifted continuously to the high temperature sides by up to 100 K while remaining constant at higher coverages. CO-TDS from Cu(111) with submonolayer Pt coverages shows that CO adsorbs in two different states attributed to CO on Pt and Cu sites. The desorption temperature of CO on Pt sites is decreased by as much as about 100 K compared to pure Pt due to the influence of the Cu substrate. HREELS results and work function measurements are used to determine the CO adsorption sites.

KW - Carbon monoxide

KW - Copper

KW - Electron energy loss spectroscopy

KW - Platinum

KW - Thermal desorption spectroscopy

KW - Thin films

KW - Work function measurements

KW - Xenon

UR - https://www.scopus.com/pages/publications/0030173158

U2 - 10.1016/0039-6028(96)00283-X

DO - 10.1016/0039-6028(96)00283-X

M3 - Article

AN - SCOPUS:0030173158

SN - 0039-6028

VL - 357-358

SP - 873

EP - 878

JO - Surface Science

JF - Surface Science

ER -

Growth and characterization of ultrathin Pt films on Cu(111)

Abstract

Keywords

UN SDGs

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