| 摘要 |
The present invention is drawn to a layered structure suitable as a support for an organic light emitting device (OLED), said layered structure comprising: ∙ (i) A light-transmissive glass substrate, ∙ (ii) A diffusive internal extraction layer (IEL) with an outer layer made of a glass containing at least 30 weight% of Bi 2O 3, formed on one side of the light-transmissive glass substrate, ∙ (iii) An acid-resistant barrier layer formed on the IEL, said acid-resistant barrier layer having a bilayer structure made of an ∙ - ALD-deposited metal oxide layer (5), the metal oxide being selected from the group consisting of aluminum oxide (Al 2O 3), titanium oxide (TiO 2), zirconium oxide (ZrO 2) and hafnium oxide (HfO 2), in contact with the IEL, and ∙ - a sputter-deposited SiO xN y layer (4) in contact with the ALD-deposited metal oxide layer. The present invention also is drawn to a method for producing such a layered structure suitable as OLED substrate. |
