Abstract
Scanning tunneling microscope operating at 4.2 K was used for investigation of the surface topography and local energy spectrum of the PbSe:Cl epitaxial films on BaF2 substrates. The information on the film growth mechanism and the surface topography was obtained. Scanning tunneling spectroscopy experiments at low temperatures showed the features of the local electron density in the grains and grain boundaries. The tunneling spectra of the grains with the average size of 0.1÷0.3 μm correspond to the bulk material properties. For the first time the information on energy spectrum of the grain boundaries with the size around 10 nm was obtained. Their local energy spectrum differs from the grains' ones. The local electron density in the grain boundaries varies also from one point to other.
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