About: X-ray photoelectron spectroscopic study on interface bonding between Pt and Zn- and O-terminated ZnO     Goto   Sponge   NotDistinct   Permalink

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  • Interface bonding between Pt and Zn- and O-terminated ZnO surfaces was investigated by precise analysis of x-ray photoelectron spectra. The interfaces were formed by vapor depositing Pt onto the ZnO surfaces in ultrahigh vacuum. The changes in the Zn 2p(3/2), O 1s, Zn LMM Auger, and Pt 4f(7/2) spectra upon Pt deposition were observed. The changes in the shape of the Zn LMM spectra and the shifts in the binding energy of Zn 2p(3/2) and O 1s revealed that there was a metallic Zn component in the Zn LMM and Zn 2p(3/2) spectra for Zn-terminated ZnO and a Pt-O component in the O 1s spectra for both Zn- and O-terminated ZnO. Peaks were fitted with multiple components accordingly. The binding energy shifts of Zn 2p(3/2) and O 1s for the ZnO component were almost the same, which confirmed that the fitting was reasonable. From the fitting results, the interface bonding was concluded to be O-terminated, i.e., Zn-O-Pt bond formation occurred at the interface for both Zn- and O-terminated ZnO. This clearly demonstrated that the stable interface bonding occurring between Pt and ZnO is Zn-O-Pt bonding whether the ZnO substrate is initially Zn-terminated or O-terminated. (C) 2013 American Vacuum Society. [http://dx.doi.org/10.1116/1.4772464]
  • Interface bonding between Pt and Zn- and O-terminated ZnO surfaces was investigated by precise analysis of x-ray photoelectron spectra. The interfaces were formed by vapor depositing Pt onto the ZnO surfaces in ultrahigh vacuum. The changes in the Zn 2p(3/2), O 1s, Zn LMM Auger, and Pt 4f(7/2) spectra upon Pt deposition were observed. The changes in the shape of the Zn LMM spectra and the shifts in the binding energy of Zn 2p(3/2) and O 1s revealed that there was a metallic Zn component in the Zn LMM and Zn 2p(3/2) spectra for Zn-terminated ZnO and a Pt-O component in the O 1s spectra for both Zn- and O-terminated ZnO. Peaks were fitted with multiple components accordingly. The binding energy shifts of Zn 2p(3/2) and O 1s for the ZnO component were almost the same, which confirmed that the fitting was reasonable. From the fitting results, the interface bonding was concluded to be O-terminated, i.e., Zn-O-Pt bond formation occurred at the interface for both Zn- and O-terminated ZnO. This clearly demonstrated that the stable interface bonding occurring between Pt and ZnO is Zn-O-Pt bonding whether the ZnO substrate is initially Zn-terminated or O-terminated. (C) 2013 American Vacuum Society. [http://dx.doi.org/10.1116/1.4772464] (en)
Title
  • X-ray photoelectron spectroscopic study on interface bonding between Pt and Zn- and O-terminated ZnO
  • X-ray photoelectron spectroscopic study on interface bonding between Pt and Zn- and O-terminated ZnO (en)
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  • X-ray photoelectron spectroscopic study on interface bonding between Pt and Zn- and O-terminated ZnO
  • X-ray photoelectron spectroscopic study on interface bonding between Pt and Zn- and O-terminated ZnO (en)
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  • RIV/00216208:11320/13:10192092!RIV14-MSM-11320___
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  • 117591
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  • RIV/00216208:11320/13:10192092
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  • films; copper; hydrogen; catalysts; zno(0001); overlayers; work function; methanol synthesis; band alignment; zinc-oxide surfaces (en)
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  • US - Spojené státy americké
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  • [30D02C301F52]
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  • Journal of Vacuum Science and Technology A
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  • 31
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  • Blumentrit, Petr
  • Yoshitake, Michiko
  • Nemsak, Slavomír
http://linked.open...ain/vavai/riv/wos
  • 000315595700001
issn
  • 0734-2101
number of pages
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  • 10.1116/1.4772464
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  • 11320
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