Date
Place
- Room F (Room 320)
- 27. Substrates and Optical Films
- August 20, 2015 (Thursday)
- 09:00 ~ 09:55
- [27-2]
- 09:25 ~ 09:40
- Title:Evaluation of Water-Vapor-Barrier Properties for Flexible OLEDs
- Akira Suzuki, Atsushi Uehigashi, Hisashi Takahagi (CEREBA, Japan), and Shigeki Hara (AIST, Japan)
Abstract: Degradation resulting from the ingress of water vapor into devices is particularly a serious problem for those using flexible organic light emitting diodes (OLEDs). We focused on the development of a reliable technique for evaluating a barrier film, which is a key material for the encapsulation of flexible OLEDs. The variables affecting WVTR measurements were investigated because the results of such evaluations typically vary widely. A series of films have been developed in order to eliminate differences between individual barrier films and enable the comparison of WVTR as detected by three different systems. Consistency between the systems in terms of the WVTR is achieved to a level of 10?5 g?m-2?day-1 at 40¡ÆC and 90% relative humidity. These results prove the reliability of not only our evaluation but also of these three systems, provided the measurements have been undertaken correctly.
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