| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1669613 | Thin Solid Films | 2009 | 4 Pages |
Abstract
Pyromellitic dianhydride (PMDA) and trimellitic anhydride (TMA) were tried as cathode interfacial layers between tris-(8-hydroxyquinoline) aluminum (Alq3) and Al in organic light emitting diodes (OLEDs). Both ultra-thin anhydride cathode interfacial layers improved the electroluminescence characteristics of OLEDs compared to those without any interfacial layer, and the PMDA interfacial layer showed the most significant enhancement of the device performance. According to impedance measurements and equivalent circuit analysis, the PMDA interfacial layer decreased the impedance, probably due to the increase in the injection efficiency of electrons from the Al cathode.
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Materials Science
Nanotechnology
Authors
Eunkyoung Nam, Hyungjun Park, Keunhee Park, Mi Ran Moon, Sunyoung Sohn, Donggeun Jung, Junsin Yi, Heeyeop Chae, Hyoungsub Kim,