Study of KCl + x% in and KCl + y% TlCl thin films

The present work reports the study of KCl thin films doped with In+ or Tl+. Both systems show optical absorption bands similar to single crystals. As the impurity concentration increases, so does the absorption as also the half band width, unlike in KCl: Cu+ films. Further experimental techniques such as X-ray diffraction, scanning electron micrographs and energy dispersive X-ray observations were used and comparative analysis with KCl : Cu+ films reveals new conditions for better crystallinity of the samples.

Keywords

Alkali halide, KCl, Optical absorption, Thin films, Crystal impurities, Doping (additives), Energy dispersive spectroscopy, Light absorption, Potassium compounds, Scanning electron microscopy, Single crystals, Tellurium compounds, X ray crystallography, Alkali halides, Ionic impurity defects, Polycrystalline materials