Enhancement of adsorbate vibrations due to interaction with microcavity mode in porous silicon superlattice

A porous silicon Fabry–Perot microcavity centred in the infrared region was used, after exposure to dodecane (C 12H 26) vapour, to study the interaction of the cavity mode with the C–H vibrations of the adsorbed molecules inside pores. This Fabry–Perot microcavity has been realised by controlling th...

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Bibliographic Details
Published in:Surface science 1999-06, Vol.427, p.235-238
Main Authors: Mattei, G., Alieva, E.V., Petrov, J.E., Yakovlev, V.A.
Format: Article
Language:English
Subjects:
Enhancement
Infrared
Microcavity
Porous silicon
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Summary:A porous silicon Fabry–Perot microcavity centred in the infrared region was used, after exposure to dodecane (C 12H 26) vapour, to study the interaction of the cavity mode with the C–H vibrations of the adsorbed molecules inside pores. This Fabry–Perot microcavity has been realised by controlling the current and the time of a stepwise anodization procedure of a p +-type silicon wafer in an electrochemical cell with a hydrofluoric acid solution. Splitting of the cavity mode dispersion curve (frequency versus wavevector) and enhancement of the infrared absorption of the adsorbate bands have been studied for various concentrations of dodecane.
ISSN:0039-6028
1879-2758
DOI:10.1016/S0039-6028(99)00271-X