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Silver sulphide growth on Ag(111) : a medium energy ion scattering study
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Window, A. J. (Amanda J.), Hentz, A., Sheppard, Daniel Crispin, Parkinson, G. S., Woodruff, D. P., Noakes, T. C. Q. and Bailey, P. (2010) Silver sulphide growth on Ag(111) : a medium energy ion scattering study. Surface Science, Vol.604 (No.15-16). pp. 1254-1260. doi:10.1016/j.susc.2010.04.009 ISSN 0039-6028.
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Official URL: http://dx.doi.org/10.1016/j.susc.2010.04.009
Abstract
The interaction of S-2 with Ag(111) under ultra-high vacuum conditions has been investigated by medium energy ion scattering (MEIS). 100 key He+ MEIS measurements provide a direct confirmation of a previous report, based on thermal desorption, that the growth of multilayer films of Ag2S occurs through a continuous corrosion process. These films show a commensurate (root 7 x root 7)R19 degrees unit mesh in low energy electron diffraction, consistent with the epitaxial growth of (111) layers of the high-temperature F-cubic phase of Ag2S. The substantial range of co-existing film thicknesses found indicates that the growth must be in the form of variable-thickness islands. The use of 100 key H+ incident ions leads to a very rapid decrease in the sulphide film thickness with increasing exposure that we attribute to an unusual chemical leaching, with implanted H atoms interacting with S atoms and desorption of H2S from the surface.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QD Chemistry Q Science > QC Physics |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
Library of Congress Subject Headings (LCSH): | Silver sulfide -- Synthesis | ||||
Journal or Publication Title: | Surface Science | ||||
Publisher: | Elsevier Science BV | ||||
ISSN: | 0039-6028 | ||||
Official Date: | 15 August 2010 | ||||
Dates: |
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Volume: | Vol.604 | ||||
Number: | No.15-16 | ||||
Number of Pages: | 7 | ||||
Page Range: | pp. 1254-1260 | ||||
DOI: | 10.1016/j.susc.2010.04.009 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access | ||||
Date of first compliant deposit: | 3 December 2015 | ||||
Date of first compliant Open Access: | 3 December 2015 | ||||
Funder: | Engineering and Physical Sciences Research Council (EPSRC) |
Data sourced from Thomson Reuters' Web of Knowledge
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