PHOTOELECTRON SPECTROSCOPY STUDY OF COMMERCIAL METAL TIN FOIL, SnO AND SnO2 OXIDES IN TWO ENERGY RANGES OF THE SYNCHROTRON RADIATION
Keywords:
tin dioxide, tin monoxide, X-ray photoelectron spectroscopy, hard X-ray photoelectron spectroscopy, synchrotron radiation, atomic and electronic structure.Abstract
Interpretation of the tin — oxygen systems atomic and electronic structure is considerably
complicated due to the large variety of Sn 3d5/2 and O 1s core levels binding energies values for SnO
and SnO2 that can be found in the literature. The aim of this work was the determination of these core
levels binding energy values for the reference commercial samples of tin foil, SnO powder and compact
sample of the tin dioxide SnO2. The used non-destructive techniques was X-ray photoelectron
spectroscopy in the synchrotron soft and hard X-rays allowing the non-destructive study at different
analysis depths and describing the surface (~ 1 nm), and a bulk layers (~ 8 nm) of the samples studied.
As a result, the binding energy values were studied for Sn 3d5/2, O 1s and Sn 4d5/2 core levels of
metallic tin, tin monoxide and dioxide. Valence electrons energy distribution features were studied
as well.
