We fabricate long-lived organic light emitting devices using a 175-micrometer thick polyethylene terephthalte substrate coated with an organic-inorganic multilayered barrier film. To assess the permeability of the plastic substrate, a glass lid and epoxy seal are used to encapsulate the display in order to compare the rate of degradation to glass-based devices. The observed permeating rate of water vapor through the plastic substrate was estimated to be 2 x 10-6 g/m squared/day. Driven at 2.5 mA/cm squared, we measure a device lifetime of 3800 hours from an initial luminance of 425 cd/m squared.
Revised: November 1, 2002 |
Published: October 14, 2002
Citation
Weaver M., L. Michalski, K. Rajan, M.A. Rothman, J.A. Silvernail, J.J. Brown, and P.E. Burrows, et al. 2002.Organic Light-Emitting Devices with Extended Operating Lifetimes on Plastic Substrates.Applied Physics Letters 81, no. 16:2929-2931. PNWD-SA-5773.