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Study of blue organic light emitting diode by inserting a red dye ultra thin layer at the emitting layer
- Source :
- Journal of Physics D: Applied Physics. 38:4153-4156
- Publication Year :
- 2005
- Publisher :
- IOP Publishing, 2005.
-
Abstract
- Experiments of inserting an ultra thin layer of DCJTB at three different levels in a blue emitter layer of a blue device, ITO/CuPc/NPB/TBADN/Alq/LiF/Al, were carried out. The spectra of these devices indicate that the recombination zone is chiefly located near the NPB/TBADN interface, implying that TBADN is capable of electron transport. The inserted DCJTB at TBADN/Alq interface has no contribution to emission, leaving only the blue emission from TBADN, even at high voltage. However, it improved the stability of the device; the half lifetime was prolonged twice more and the rise of applied voltage during ageing was suppressed from 3 V to 0.4 V.
- Subjects :
- Electron mobility
Acoustics and Ultrasonics
business.industry
Chemistry
Thin layer
High voltage
Condensed Matter Physics
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
law.invention
law
OLED
Optoelectronics
Thin film
business
Layer (electronics)
Common emitter
Light-emitting diode
Subjects
Details
- ISSN :
- 13616463 and 00223727
- Volume :
- 38
- Database :
- OpenAIRE
- Journal :
- Journal of Physics D: Applied Physics
- Accession number :
- edsair.doi...........c5664c8e93ed8cda1796615e14d9c77b