Laser induced changes of As50Se50 nanolayers studied by synchrotron radiation photoelectron spectroscopy

► Stoichiometry changes of As50Se50 nanolayers under air and/or light exposure ► Effect of the ambient condition on the structure of As50Se50 surface nanolayers ► Transformation of As50Se50 surface nanolayers under near bandgap illumination ► Surface sensitive synchrotron radiation photoelectron spectroscopy experiments