Abstract
A flexible organic device needs a protective encapsulating layer to resist degradation of the device due to environmental oxygen and moisture. The performance of organic devices degrades with time due to a self-process of delamination and oxide formation of the cathode by environmental oxygen and moisture for electrochemical processes. Here, a flexible multilayer barrier film, which is a sandwiched composite layer with organic layers, has been fabricated in an inexpensive way under atmospheric conditions using an applicator on PET substrate. An organic layer (POL) consists of bisphenol A-type phenoxy resin and epoxy resin. For the middle composite layer (MMT), a composite with montmorillonite has been used as an interactive barrier. The multilayer film with ball-milled montmorillonite 2% composite layer shows lower moisture permeation rate of 2.850 × 10−2 gm−2day-1 than only POL on PET substrate. Fabrication of flexible multilayer barrier film from solution has promising industrial prospects due to facile processing at low temperatures.
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