Auger electron spectroscopy stoichiometry, electronic

However, in recent times, there have been several reports on synthesis of the crystalline form of carbonitride. Zhang et al. " synthesized crystalline carbonitride films with large crystalline grains up to 10 pm (from SEM and XRD spectra) in size by RE plasma assisted hot filament chemical vapor deposition. Li. et al. claimed to have synthesized poly crystalline C3N4 films (from XRD data) at ambient temperature by RE diode sputtering. Erom Auger electron spectroscopy, the N/C ratio was computed to be 1.33 as required for C3N4 stoichiometry. 

On this basis, we focused on the sol-gel synthesis and characterization of nanocrystalline copper oxide thin films with the aim to achieve a good control over film chemical composition [66]. In the preparation of such systems, stoichiometry and phase composition represent a major concern, and they can be suitably tailored by a proper choice of the molecular precursors and of the annealing conditions. The chemical composition and copper oxidation state were investigated by X-ray photoelectron spectroscopy (XPS) and X-ray excited Auger electron spectroscopy (XE-AES). Copper oxide thin films (thickness = lOOnm) were produced from copper acetate and were subsequently heated between 100 and 900 °C in different flowing gas atmospheres, i.e. air, nitrogen and forming gas (4% H2 in N2). 

---