| 摘要 |
This multilayer component (11) for encapsulating an element (12) which is sensitive to air and/or moisture comprises an organic polymer layer (1) and at least one barrier stack (2). The barrier stack (2) comprises at least one sequence of layers consisting of a retention layer (22) sandwiched between two high-activation-energy layers (21, 23), in which: - for each of the two high-activation-energy layers (21, 23), the difference in activation energy for water vapor permeation between, on the one hand, a reference substrate coated with the high-activation-energy layer and, on the other hand, this same reference substrate when bare is greater than or equal to 20 kJ/mol; and - the ratio of the effective water vapor diffusivity in the retention layer (22) on a reference substrate to the water vapor diffusivity in this same reference substrate when bare is strictly less than 0.1. |
