Effects of air exposure on amorphous carbon nitride surfaces

摘要

The possible application of amorphous carbon nitride thin films to prevent the multipactor effect is discussed. The main difficulty lies in the increase of the secondary electron emission coefficient after air exposure. Adsorption processes on amorphous carbon nitride surfaces due to air exposure and subsequent changes due to thermal annealing have been studied by means of x-ray photoemission spectroscopy with the purpose of understanding the changes of secondary electron emission characteristics.