| abstract |
An organic light emitting device (100) is provided, having a p-doped organicnlayer (130), an n-doped layer (170), and a phosphorescent emissive layer (150)ndisposed between the p-doped and n-doped layers. Blocking layers (140, 160)nare used to confine electrons, holes, and excitons in the emissive layer. A devicenhaving a cathode (180) on the top is provided, as well as an "inverted"ndevice having a cathode on the bottom. |