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Efficient top-emitting organic light-emitting devices using Fe3O4 modified Ag anode
- Source :
- Organic Electronics. 11:1891-1895
- Publication Year :
- 2010
- Publisher :
- Elsevier BV, 2010.
-
Abstract
- Highly efficient top-emitting organic light-emitting devices (TOLEDs) using a Fe3O4 modified Ag anode have been demonstrated. The tris-(8-hydroxyquinoline) aluminum-based TOLEDs exhibit a very low turn-on voltage of 2.5 V and a high current efficiency of 8.1 cd/A. The improved properties for the TOLEDs is mainly due to the enhanced hole injection by introducing the anodic buffer. The mechanism of this enhanced hole injection is studied by the X-ray and ultra-violet photoemission spectroscopy, which demonstrated that the dipole layer is formed at the anode/organic interface and the hole-injection barrier is therefore reduced after introducing the thin Fe3O4 film between the Ag anode and the hole-transport layer.
- Subjects :
- business.industry
Organic interface
Photoemission spectroscopy
Analytical chemistry
chemistry.chemical_element
General Chemistry
Condensed Matter Physics
Buffer (optical fiber)
Electronic, Optical and Magnetic Materials
Anode
Biomaterials
Dipole
chemistry
Aluminium
Materials Chemistry
Optoelectronics
Electrical and Electronic Engineering
business
Layer (electronics)
Voltage
Subjects
Details
- ISSN :
- 15661199
- Volume :
- 11
- Database :
- OpenAIRE
- Journal :
- Organic Electronics
- Accession number :
- edsair.doi...........fea6a6d7097ea6fbe26658c4016c1e77