Organic light-emitting devices with extended operating lifetimes on plastic substrates

We fabricate long-lived organic light-emitting devices using a 175 μm thick polyethylene terephthalate substrate coated with an organic–inorganic multilayered barrier film and compare the rate of degradation to glass-based devices. The observed permeation rate of water vapor through the plastic substrate was estimated to be 2×10−6 g/m2/day. Driven at 2.5 mA/cm2, we measure a device lifetime of 3800 h from an initial luminance of 425 cd/m2.

[1]  Hood Chatham,et al.  Oxygen diffusion barrier properties of transparent oxide coatings on polymeric substrates , 1996 .

[2]  C. Tang,et al.  Organic Electroluminescent Diodes , 1987 .

[3]  Wendy D. Bennett,et al.  Gas permeation and lifetime tests on polymer-based barrier coatings , 2001, SPIE Optics + Photonics.

[4]  Ching Wan Tang,et al.  Doped organic electroluminescent devices with improved stability , 1997 .

[5]  G. Graff,et al.  Ultrahigh rate, wide area, plasma polymerized films from high molecular weight/low vapor pressure liquid or solid monomer precursors , 1999 .

[6]  H. Chan,et al.  Investigation of the sites of dark spots in organic light-emitting devices , 2000 .

[7]  S R Forrest,et al.  Vacuum-deposited, nonpolymeric flexible organic light-emitting devices. , 1997, Optics letters.

[8]  A. Heeger,et al.  Flexible light-emitting diodes made from soluble conducting polymers , 1992, Nature.

[9]  Stephen R. Forrest,et al.  Operating lifetime of phosphorescent organic light emitting devices , 2000 .

[10]  R. N. Marks,et al.  Light-emitting diodes based on conjugated polymers , 1990, Nature.

[11]  F. Papadimitrakopoulos,et al.  Chemical and morphological stability of aluminum tris(8-hydroxyquinoline) (Alq/sub 3/): effects in light-emitting devices , 1998 .

[12]  Stephen R. Forrest,et al.  High operational stability of electrophosphorescent devices , 2002 .

[13]  Stephen R. Forrest,et al.  High-efficiency organic electrophosphorescent devices with tris(2-phenylpyridine)iridium doped into electron-transporting materials , 2000 .

[14]  S. Forrest,et al.  Reliability and degradation of organic light emitting devices , 1994 .