title: Transparent Metal-Organic Framework/Polymer Mixed Matrix Membranes as Water Vapor Barriers.
abstract: Preventing the permeation of reactive molecules into electronic devices or photovoltaic modules is of great importance to ensure their life span and reliability. This work is focused on the formation of highly functioning barrier films based on nanocrystals (NCs) of a water-scavenging metal-organic framework (MOF) and a hydrophobic cyclic olefin copolymer (COC) to overcome the current limitations. Water vapor transmission rates (WVTR) of the films reveal a 10-fold enhancement in the WVTR compared to the substrate while maintaining outstanding transparency over most of the visible and solar spectrum, a necessary condition for integration with optoelectronic devices.
authors.affiliation: The Molecular Foundry, Materials Sciences Division, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States.
authors.forename: Youn Jue
authors.initials: YJ
authors.lastname: Bae
authors.affiliation: The Molecular Foundry, Materials Sciences Division, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States.
authors.forename: Eun Seon
authors.initials: ES
authors.lastname: Cho
authors.affiliation: The Molecular Foundry, Materials Sciences Division, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States.
authors.forename: Fen
authors.initials: F
authors.lastname: Qiu
authors.affiliation: Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL) CH 1051 Sion, Switzerland.
authors.forename: Daniel T
authors.initials: DT
authors.lastname: Sun
authors.affiliation: The Molecular Foundry, Materials Sciences Division, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States.
authors.forename: Teresa E
authors.initials: TE
authors.lastname: Williams
authors.affiliation: The Molecular Foundry, Materials Sciences Division, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States.
authors.forename: Jeffrey J
authors.initials: JJ
authors.lastname: Urban
authors.affiliation: Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL) CH 1051 Sion, Switzerland.
authors.forename: Wendy L
authors.initials: WL
authors.lastname: Queen
mesh_terms: D008670:Metals; D011108:Polymers / Q000737:chemistry*; D015203:Reproducibility of Results; D013227:Steam; D014867:Water / Q000737:chemistry
chemical_list: D008670:Metals; D011108:Polymers; D013227:Steam; D014867:Water
keywords: encapsulant; metal−organic framework; mixed-matrix membrane gas barrier; postsynthetic modification; water vapor transmission rate