The XPS measurements on Au(111) were performed at the ALOISA beamline of the Elettra synchrotron radiation facility in Trieste (Italy) . The high-resolution XPS spectra were recorded with the analyzer oriented along the linearly polarized electric field while keeping the sample at a grazing incidence of 4.0˚ (close to normal emission and p-polarization). The electron spectrometer is a home-made hemispherical analyzer (mean radius of 66 mm) equipped with a high dynamic range (2 MHz) two-dimensional delay-line detector (2D-DLD) coupled to multi-channel plates. All spectra were acquired after I-BOPHY-I evaporation at RT and stepwise post-annealing at different temperatures. The photon energy used for the XPS measurements of F 1s and I 3d was 820 eV (overall XPS resolution better than 240 meV), while for C 1s and N 1s spectra was 515 eV (overall XPS resolution better than 160 meV). The scale in binding energy (BE) was calibrated to the Fermi level. We verified that no significant radiation damage took place on the timescale of the spectroscopic measurements by comparison of photoemission spectra measured on irradiated and fresh sample areas. XPS on Ag(111) and air stability measurements on Au(111) and Ag(111) were performed using a Phoibos 100 electron analyzer equipped with a 2D-DLD detector and an Al-Kα monochromatic X-Ray source.