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. © 2010 Copyright SPIE - The International Society for Optical Engineering.