Solution Processible Organic–Inorganic Hybrid Moisture Barrier Film
It is extremely important to provide the substrate of the flexible OLED with transparent and flexible moisture barrier property since the organic functional layers and metal electrodes are highly sensitive to water vapor. Solution processible moisture barrier may be a potential candidate to achieve low cost, high productivity and large area moisture barrier. In this study, we fabricated an organic–inorganic hybrid moisture barrier thin film by the condensation reaction between poly(melamine-co-formaldehyde) (PMF) and tetraethyl orthosilicate (TEOS) using sol–gel method. It was expected that PMF and silicone oxide provided the thin film with mechanical flexibility and moisture barrier property, respectively. It was confirmed that very dense hybrid monolayer and multi-layer films with very smooth surface and high optical transmittance were successfully fabricated using the sol–gel process. Moisture barrier property was determined by water vapor transmission rate (WVTR) measured by Ca-test at 85 °C and 85% RH. WVTR of the bare poly(ethylene naphthalate) (PEN, 150 μm) film was found to be about 17 g/m2/day, while the PEN film coated with the hybrid film showed the lower WVTR value of 4.5 g/m2/day. The WVTR value at 85 °C and 85% RH corresponds to the value in the range of 10–2–10–3 g/m2/day under ambient condition, confirming the efficient moisture barrier property of the hybrid layers.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
Document Type: Research Article
Publication date: November 1, 2014
More about this publication?
- Science of Advanced Materials (SAM) is an interdisciplinary peer-reviewed journal consolidating research activities in all aspects of advanced materials in the fields of science, engineering and medicine into a single and unique reference source. SAM provides the means for materials scientists, chemists, physicists, biologists, engineers, ceramicists, metallurgists, theoreticians and technocrats to publish original research articles as reviews with author's photo and short biography, full research articles and communications of important new scientific and technological findings, encompassing the fundamental and applied research in all latest aspects of advanced materials.
- Editorial Board
- Information for Authors
- Subscribe to this Title
- Ingenta Connect is not responsible for the content or availability of external websites