Structural and optical changes in AS2S3 thin films induced by light ion irradiation

The influence of H+ and D+ ion irradiation and laser illumination on the optical absorption edge, the refractive index and the Raman scattering spectra of as-deposited and annealed As2S3 films have been investigated. It was established, that a significant similarity exists between optical changes induced in As2S3 films by light illumination and by irradiation with light ions and also between structural changes thought to be responsible for these effects. The changes are connected with electron excitation processes in both cases and further initiation of atomic rearrangements within the amorphous phase.