Spectroscopic studies of conducting metal oxides
Metal oxides such as indium tin oxide and fluorine doped
tin oxide are degenerate semiconductors. These materials
are widely used in flat panel displays as well as in
applications such as heat shields where infrared reflectivity
is an advantage. Here we discuss spectroscopic studies of
The fact that ITO has reflectivity in the infrared suggests
that grazing angle infrared spectroscopy will be useful to
detect surface adlayers. The plasmon frequency occurs
at the transition between a conductor and an insulator.
In ITO this transition occurs at around 9000 cm-1 allowing
infrared detection as shown in the following.