Effects of triplet energies and transporting properties of carrier transporting materials on blue phosphorescent organic light emitting devices
- 22 September 2008
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 93 (12), 123306
- https://doi.org/10.1063/1.2978235
Abstract
We have studied the effects of the hole transporting layers and electron transporting layers on the device efficiencies of iridium(III) bis[(4,6-di-fluorophenyl)-pyridinato- N , C 2 ′ ] picolinate (FIrpic) doped 3, 5 ′ − N , N ′ -dicarbazole-benzene (mCP) host blue phosphorescent organic light emitting diodes. We found that the device efficiency is very sensitive to the hole transporting materials used and both the triplet energy and carrier transport properties affect the device efficiency. On the other hand, there is no apparent correlation between the device efficiency and the triplet energy of the electron transporting material used. Instead, the device efficiency is affected by the electron mobility of the electron transporting layer only.Keywords
This publication has 23 references indexed in Scilit:
- Emission mechanism in organic light-emitting devices comprising a europium complex as emitter and an electron transporting material as hostJournal of Applied Physics, 2007
- Highly Efficient Organic Blue Electrophosphorescent Devices Based on 3,6‐Bis(triphenylsilyl)carbazole as the Host MaterialAdvanced Materials, 2006
- Highly efficient white organic light-emitting diodeApplied Physics Letters, 2006
- Intermolecular Interaction and a Concentration-Quenching Mechanism of Phosphorescent Ir(III) Complexes in a Solid FilmPhysical Review Letters, 2006
- White Organic Light‐Emitting Devices for Solid‐State LightingAdvanced Materials, 2004
- Efficient Organic Electrophosphorescent White‐Light‐Emitting Device with a Triple Doped Emissive LayerAdvanced Materials, 2004
- The path to ubiquitous and low-cost organic electronic appliances on plasticNature, 2004
- High-efficiency phosphorescent polymer light-emitting devicesOrganic Electronics, 2003
- Transient analysis of organic electrophosphorescence. II. Transient analysis of triplet-triplet annihilationPhysical Review B, 2000
- Transient analysis of organic electrophosphorescence: I. Transient analysis of triplet energy transferPhysical Review B, 2000