effet de vieillissement

CONT: Le silicium amorphe souffre [...] d'un effet de vieillissement lié à l'instabilité de l'hydrogène dans sa structure due aux effets de surface et aux réactions chimiques avec le milieu extérieur (H[indice 2]O, CO[indice 2], ...).

CONT: Ageing effect. The efficiency of amorphous silicon solar cells drops when exposed to light until it has reached a stable value (at around 10 to 30 percent of its initial value) over the course of its service life. The efficiency of ""cascading"" or ""tandem"" cells helps here considerably.