Abstract
Measurements of the vibrational spectra of monolayers or submono-layers of adsorbates on surfaces present a severe challenge to the infrared spectroscopist. In many cases, multiple surfaces cannot be used and small signals must be measured that are superimposed on background radiation that can be many orders of magnitude stronger. To be successful, an experiment must be both well conceived and well executed. The conventional approaches are transmittance and reflection-absorption spectroscopy. Hoffmann(1) and Ryberg(2) have reviewed the reflection-absorption technique. Many approaches have been used to enhance the size of the surface signal relative to the backgrounds. These include multiple reflection,(3,4) attenuated total internal reflection,(5) surface electromagnetic waves,(6) and Stark modulation,(7) as well as direct measurements of absorption and emission.
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Richards, P.L., Tobin, R.G. (1987). Infrared Spectroscopy of Adsorbates on Metals: Direct Absorption and Emission. In: Yates, J.T., Madey, T.E. (eds) Vibrational Spectroscopy of Molecules on Surfaces. Methods of Surface Characterization, vol 1. Springer, Boston, MA. https://doi.org/10.1007/978-1-4684-8759-6_9
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DOI: https://doi.org/10.1007/978-1-4684-8759-6_9
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