Characterization of WO3:Ag films: ToF-SIMS studies of ammonia adsorption

C. Bittencourt; M.P. Felicissimo; A. Felten; L.A.O. Nunes; P. Ivanov; E. Llobet; J.-J. Pireaux; L. Houssiau

doi:10.1016/j.apsusc.2004.12.018

Characterization of WO₃:Ag films: ToF-SIMS studies of ammonia adsorption

C. Bittencourt, M.P. Felicissimo, A. Felten, L.A.O. Nunes, P. Ivanov, E. Llobet, J.-J. Pireaux, L. Houssiau

Namur Research Institute for Life Sciences

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

Abstract

In this work, the composition and morphology of WO films loaded with different levels of Ag, prepared by screen-printing onto Si substrates and annealed in air were investigated. The TEM micrography showed that the films are grain-like; the grain size increases with the increase of the Ag loading level. The Raman spectroscopy showed the formation of a AgWO bronze structure. XPS and ToF-SIMS results showed that while undergoing annealing, the Ag atoms migrate to the surface forming clusters. The molecular images obtained by ToF-SIMS showed that the NH binds preferentially at the surface of the Ag clusters. No preferential binding site was found for hydrocarbon contamination.

Original language	English
Pages (from-to)	21-28
Number of pages	8
Journal	Applied Surface Science
Volume	250
Issue number	1-4
DOIs	https://doi.org/10.1016/j.apsusc.2004.12.018
Publication status	Published - 31 Aug 2005

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10.1016/j.apsusc.2004.12.018

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title = "Characterization of WO3:Ag films: ToF-SIMS studies of ammonia adsorption",

abstract = "In this work, the composition and morphology of WO films loaded with different levels of Ag, prepared by screen-printing onto Si substrates and annealed in air were investigated. The TEM micrography showed that the films are grain-like; the grain size increases with the increase of the Ag loading level. The Raman spectroscopy showed the formation of a AgWO bronze structure. XPS and ToF-SIMS results showed that while undergoing annealing, the Ag atoms migrate to the surface forming clusters. The molecular images obtained by ToF-SIMS showed that the NH binds preferentially at the surface of the Ag clusters. No preferential binding site was found for hydrocarbon contamination.",

author = "C. Bittencourt and M.P. Felicissimo and A. Felten and L.A.O. Nunes and P. Ivanov and E. Llobet and J.-J. Pireaux and L. Houssiau",

year = "2005",

month = aug,

day = "31",

doi = "10.1016/j.apsusc.2004.12.018",

language = "English",

volume = "250",

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journal = "Applied Surface Science",

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T1 - Characterization of WO3:Ag films

T2 - ToF-SIMS studies of ammonia adsorption

AU - Bittencourt, C.

AU - Felicissimo, M.P.

AU - Felten, A.

AU - Nunes, L.A.O.

AU - Ivanov, P.

AU - Llobet, E.

AU - Pireaux, J.-J.

AU - Houssiau, L.

PY - 2005/8/31

Y1 - 2005/8/31

N2 - In this work, the composition and morphology of WO films loaded with different levels of Ag, prepared by screen-printing onto Si substrates and annealed in air were investigated. The TEM micrography showed that the films are grain-like; the grain size increases with the increase of the Ag loading level. The Raman spectroscopy showed the formation of a AgWO bronze structure. XPS and ToF-SIMS results showed that while undergoing annealing, the Ag atoms migrate to the surface forming clusters. The molecular images obtained by ToF-SIMS showed that the NH binds preferentially at the surface of the Ag clusters. No preferential binding site was found for hydrocarbon contamination.

AB - In this work, the composition and morphology of WO films loaded with different levels of Ag, prepared by screen-printing onto Si substrates and annealed in air were investigated. The TEM micrography showed that the films are grain-like; the grain size increases with the increase of the Ag loading level. The Raman spectroscopy showed the formation of a AgWO bronze structure. XPS and ToF-SIMS results showed that while undergoing annealing, the Ag atoms migrate to the surface forming clusters. The molecular images obtained by ToF-SIMS showed that the NH binds preferentially at the surface of the Ag clusters. No preferential binding site was found for hydrocarbon contamination.

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DO - 10.1016/j.apsusc.2004.12.018

M3 - Article

AN - SCOPUS:23844501078

SN - 0169-4332

VL - 250

SP - 21

EP - 28

JO - Applied Surface Science

JF - Applied Surface Science

IS - 1-4

ER -

Characterization of WO₃:Ag films: ToF-SIMS studies of ammonia adsorption

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Synthesis, Irradiation and Analysis of Materials (SIAM)

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Characterization of WO3:Ag films: ToF-SIMS studies of ammonia adsorption

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Characterization of WO₃:Ag films: ToF-SIMS studies of ammonia adsorption