Anomalous current-voltage characteristics of polymer light-emitting diodes
- 8 March 2002
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 65 (11) , 115211-1152115
- https://doi.org/10.1103/physrevb.65.115211
Abstract
Light-emitting diodes based on an alternating copolymer containing triphenylamine and phenylene units (TPA-PPA) were prepared, and electrically and optically characterized. The diode with a structure of indium tin oxide/TPA-PPV/Al exhibited a “current anomaly” phenomenon. We demonstrated that the “current anomaly” is caused by a reverse internal electric field owing to the reabsorption of electroluminescent light rather than the changes in the aluminum-doping concentration during operation.Keywords
This publication has 22 references indexed in Scilit:
- A new high efficiency light emitting materialSynthetic Metals, 1999
- Light-emitting diodes based on an alternating copolymer containing triphenylamine and phenylene unitsApplied Physics Letters, 1999
- Operating stability of light-emitting polymer diodes based on poly(p-phenylene vinylene)Applied Physics Letters, 1997
- Blue photo- and electroluminescence from poly(benzoyl-1,4-phenylene)Applied Physics Letters, 1997
- Photoluminescence efficiency and absorption of aluminum-tris-quinolate (Alq3) thin filmsChemical Physics Letters, 1996
- Poly(2,5-diheptyl-1,4-phenylene-alt-2,5-thienylene): a new material for blue-light-emitting diodesSynthetic Metals, 1995
- Measurement of absolute photoluminescence quantum efficiencies in conjugated polymersChemical Physics Letters, 1995
- Light emission in reverse bias operation from poly(3-octylthiophene)-based light emitting diodesApplied Physics Letters, 1995
- Light-emitting diodes based on conjugated polymersNature, 1990
- Poly‐p‐xylyliden. Synthesen und beziehungen zwischen struktur und elektrophysikalischen eigenschaftenDie Makromolekulare Chemie, 1970