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Investigations of nanostructured porous PbTe films with x-ray diffractometry and reflectometry

In this work application of x-ray total external reflection method for the determination of the porosity value of PbTe and PbSe epitaxial films on silicon substrates subjected to anodic electrochemical etching in a Norr electrolyte was carried out. It is shown that the porosity values of the films can be in the range of 10-68% depending on the anodizing conditions. Triple-crystal x-ray diffractometry method was utilized for the estimation of quantitative characteristics of the pore dimensions along different directions. Nanometer-range pore dimensions and shape are estimated.