Operating stability of light-emitting polymer diodes based on poly(p-phenylene vinylene)
- 7 July 1997
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 71 (1), 34-36
- https://doi.org/10.1063/1.119483
Abstract
We have developed modified poly(p-phenylene vinylene) (PPV) to improve its performance in organic electroluminescent devices. Encapsulated single-layer devices with this PPV on indium–tin oxide and a calcium cathode have been operated in air for >7000 h at 20 °C and >1100 h at 80 °C without noticeable degradation. Devices fabricated with this PPV, a conducting polymer layer as anode, and a sputtered low work-function alloy as cathode have efficiencies of over 2 lm/W, brightnesses of >600 Cd/m2 at 4 V, and lifetimes of >1400 h driven at ∼100 Cd/m2 initial brightness.Keywords
This publication has 24 references indexed in Scilit:
- Conjugated polymer electroluminescence: technical aspects from basic devices to commercial productsPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 1997
- A classical electrostatic model for tetragonal single crystals of barium titanatePhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 1997
- Singlet Intrachain Exciton Generation and Decay in Poly(-phenylenevinylene)Physical Review Letters, 1996
- MetaVInsulatorPolymer - LEDs Based on PPVMolecular Crystals and Liquid Crystals, 1996
- Photo-oxidation of polymers used in electroluminescent devicesSynthetic Metals, 1995
- Reliability and degradation of organic light emitting devicesApplied Physics Letters, 1994
- Conjugated polymer light-emitting diodes on silicon substratesApplied Physics Letters, 1994
- Observation of degradation processes of Al electrodes in organic electroluminescence devices by electroluminescence microscopy, atomic force microscopy, scanning electron microscopy, and Auger electron spectroscopyJournal of Applied Physics, 1994
- Polyaniline as a transparent electrode for polymer light-emitting diodes: Lower operating voltage and higher efficiencyApplied Physics Letters, 1994
- Light-emitting diodes based on conjugated polymersNature, 1990