Print Email Facebook Twitter Spotless hybrid thin-film encapsulation stack for organic light-emitting diodes on organic foils Title Spotless hybrid thin-film encapsulation stack for organic light-emitting diodes on organic foils Author van de Weijer, P. Akkerman, H.B. Publication year 2019 Abstract In order to protect a flexible OLED on plastic foil against water from the ambient atmosphere a top and bottom thin-film encapsulation (TFE) is necessary. A TFE stack SiN-OCP-SiN with getter in OCP results in excellent shelf lifetime. However, the getter particles result in light scattering that is lost upon water ingress in the stack. As a result spots of reduced electroluminescence are observed during exposure to the ambient atmosphere that limit the practical lifetime of the device drastically. For the bottom emitting OLED we reduced the getter content in the bottom barrier to a level that does not exhibit visible light scattering. The reduced getter capacity with respect to the top barrier does not result in a lower performance of the bottom barrier due to the lower pinhole density in SiN-ITO with respect to Al-SiN. The projected shelf lifetime at ambient conditions is 10 years. © 2018 Elsevier B.V. Subject Flexible OLEDSpotless barrierThin-film encapsulationGettersLightLight scatteringSilicon nitrideThin filmsAmbient atmosphereAmbient conditionsBottom emittingFlexible OLEDHybrid thin filmSpotless barrierThin film encapsulationWater ingressOrganic light emitting diodes (OLED) To reference this document use: http://resolver.tudelft.nl/uuid:9ca11afc-eed1-42ac-a901-f5024423cc8a TNO identifier 858076 Publisher Elsevier B.V. ISSN 1566-1199 Source Organic Electronics: physics, materials, applications, 66, 43-46 Document type article Files To receive the publication files, please send an e-mail request to TNO Library.