Transient photodarkening and photobleaching in glassy GeSe2 films

Transient photodarkening and photobleaching were studied earlier in As chalcogenide films. Such effects are observed in glassy GeSe2 films additionally to the metastable effects. Transient photobleaching in glassy GeSe2 films displays some peculiarities. Transient photobleaching is the manifestation of transient component of photodarkening.

Research highlights
► Transient photodarkening and photobleaching are studied in glassy GeSe2 films.
► Transient photobleaching displays some peculiarities.
► It appears only in as-deposited films. Transient photobleaching arises from transient.