High-Efficiency Fluorescent Blue Organic Light-Emitting Device with Balanced Carrier Transport
- 1 January 2007
- journal article
- Published by The Electrochemical Society in Journal of the Electrochemical Society
- Vol. 154 (7), J226-J228
- https://doi.org/10.1149/1.2737659
Abstract
We demonstrate a blue fluorescent organic light-emitting device having a current efficiency of 19.2cd∕A19.2cd∕A and an external quantum efficiency of 8.32% at 100cd∕m2100cd∕m2 . While driving at 20mA∕cm220mA∕cm2 , the device showed a current efficiency of 16.5cd∕A16.5cd∕A with a CIE coordinate at (0.155, 0.239) and an operation voltage of 5.14V5.14V . The estimated half-decay lifetime is 15,611h15,611h at an initial luminance of 1000cd∕m21000cd∕m2 . The improved performance is the result of better carrier balance which is achieved by using bis(10-hydroxybenzo[h]quinolinato)beryllium (Bebq2)(Bebq2) as the electron-transport layer.Keywords
This publication has 20 references indexed in Scilit:
- Effect of Hole Mobility Through Emissive Layer on Temporal Stability of Blue Organic Light‐Emitting DiodesAdvanced Functional Materials, 2006
- Radiation Simulations of Top-Emitting Organic Light-Emitting Devices With Two- and Three-Microcavity StructuresJournal of Display Technology, 2006
- The role of charge-transfer integral in determining and engineering the carrier mobilities of 9,10-di(2-naphthyl)anthracene compoundsChemical Physics Letters, 2006
- Operation lifetimes of organic light-emitting devices with different layer structuresChemical Physics Letters, 2005
- Enhanced light extraction efficiency from organic light emitting diodes by insertion of a two-dimensional photonic crystal structureJournal of Applied Physics, 2004
- Local order in amorphous organic molecular thin filmsChemical Physics Letters, 2001
- Organic electroluminescent devices with improved stabilityApplied Physics Letters, 1996
- Microcavity effects in organic semiconductorsApplied Physics Letters, 1994
- Control of emission characteristics in organic thin-film electroluminescent diodes using an optical-microcavity structureApplied Physics Letters, 1993
- Electroluminescence of doped organic thin filmsJournal of Applied Physics, 1989