Principles for fabricating moisture barrier films via stacked Janus graphene layers.

ABSTRACT: The excellent impermeability makes graphene film an ideal candidate for thin film encapsulation technology. However, current chemical vapor deposition (CVD) graphene-based barrier films can not provide sufficient moisture barrier performance, suggesting a lack of understanding in mechanism that dominates water diffusion in/through graphene stacks. Herein, we fabricate large-area graphene barrier films with a record-low water vapor transmission rate (WVTR) of 5 × 10^-5g/(m²·day), two orders of magnitude lower than previous works, in which two stacked Janus graphene films are intercalated by toluidine blue O (TBO) sub-monolayer: one side of graphene is decorated with fluorine- and oxygen-containing groups to allow crack-free transfer, while the other side is functionali

SUBMITTER: Zhou C 

PROVIDER: S-EPMC11994773 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature