Low voltage organic light emitting diodes featuring doped phthalocyanine as hole transport material
- 10 August 1998
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 73 (6) , 729-731
- https://doi.org/10.1063/1.121982
Abstract
We show that doping of the transport layers can strikingly improve the properties of organic light emitting diodes (OLEDs). The electroluminescence onset voltage of diodes containing an vanadyl–phthalocyanine (VOPc) hole transport layer intentionally doped with tetrafluorotetracyano-quinodimethan (F4-TCNQ) is reduced by up to an order of magnitude compared to OLED with undoped VOPc. The improved properties of our devices can be explained by the improved conductivity and better injection for a doped transport layer.Keywords
This publication has 17 references indexed in Scilit:
- Organic light-emitting diodes using 3- or 5-hydroxyflavone–metal complexesApplied Physics Letters, 1997
- Bright high efficiency blue organic light-emitting diodes with Al2O3/Al cathodesApplied Physics Letters, 1997
- Highly efficient and bright organic electroluminescent devices with an aluminum cathodeApplied Physics Letters, 1997
- Operating stability of light-emitting polymer diodes based on poly(p-phenylene vinylene)Applied Physics Letters, 1997
- Fabrication and electroluminescence of double-layered organic light-emitting diodes with the Al2O3/Al cathodeApplied Physics Letters, 1997
- Accelerated hole transfer by double-layered metallophthalocyanine thin film for effective electroluminescenceApplied Physics Letters, 1997
- A novel family of amorphous molecular materials containing an oligothiophene moiety as color‐tunable emitting materials for organic electroluminescent devicesAdvanced Materials, 1997
- Transparent organic light emitting devicesApplied Physics Letters, 1996
- Organic electroluminescent diodesApplied Physics Letters, 1987
- Molecular semiconductors and junction formation: Phthalocyanine derivativesSynthetic Metals, 1987