Details

Autor(en) / Beteiligte

• Han, Sijin
• Yuan, Yanyan
• Lu, Zheng-Hong

Titel

Highly efficient organic light-emitting diodes with metal/fullerene anode

Ist Teil von

• Journal of applied physics, 2006-10, Vol.100 (7), p.074504-074504-6

Ort / Verlag

American Institute of Physics

Erscheinungsjahr

2006

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Metal/fullerene bilayers have been studied as hole injection electrodes for use in organic light-emitting diodes (OLEDs). In the case of a simple emission zone structure, it is found that OLEDs with the Au ∕ C 60 anodes have much lower ( ∼ 10 V ) driving voltages and much higher current efficiencies (five times higher) than OLEDs with a simple Au anode. This anode structure was found to be applicable for all types of light-emitting structures including fluorescent and phosphorescent dye-doped systems. The formation of a primary bond at the Au ∕ C 60 interface is explained as the major cause for efficient hole injection from Au to C 60 . The hole transfer barrier between C 60 and the adjacent hole transport layer is also found critical in selecting suitable matching materials to achieve highly efficient OLEDs.