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- W1967800352 abstract "To understand the mechanism of photo-CVD utilized for preparation of a thin Fe film, the photolytic decarbonylation of Fe(CO)5 adsorbed on silver surfaces at T < 120 K was studied using IR reflection absorption spectroscopy (IRAS), X-ray photoelectron spectroscopy (XPS), and thermal desorption spectroscopy (TDS). Irradiation of adsorbed Fe(CO)5 with SOR light (λ > 150 nm) leads to the evolution of CO without the photodesorption of molecular Fe(CO)5. The yield of CO photo-evolution increases with increasing coverage of Fe(CO)5 up to 15 monolayers, indicating significant energy relaxation at the metal surface. XPS analysis indicates that surface intermediates formed by photolytic decarbonylation of Fe(CO)5 adsorbed at coverages less than one monolayer have an average composition ofCO/Fe = 4. In overlayers of adsorbed Fe(CO)5, photodecarbonylation proceeds further. The intermediates are stable under prolonged irradiation, but undergo thermal decarbonylation at T > 300 K, depositing Fe on the surface. The results of IRAS suggest that the intermediate species is Fe(CO)4 or Fe2(CO)8 at coverages lower than a monolayer, proceeding to higher oligomers as its population increases. The oligomers are dissociated to monomers at T ≃ 280 K. The Fe deposits are found tobe carbon free and inactive for Co adsorption." @default.
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- W1967800352 date "1994-05-01" @default.
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- W1967800352 title "Surface intermediates formed during photolytic decarbonylation of iron pentacarbonyl adsorbed on silver surfaces" @default.
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- W1967800352 doi "https://doi.org/10.1016/0169-4332(94)90449-9" @default.
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