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Admittance Spectroscopy on Polymer Light-Emitting Diodes

Published online by Cambridge University Press:  21 March 2011

P.W.M. Blom ,
H.C.F. Martens ,
H.B. Brom  and
J.N. Huiberts
P.W.M. Blom
Affiliation:
Materials Science Centre, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
H.C.F. Martens
Affiliation:
Kamerlingh Onnes Laboratory, Leiden University, P.O. Box 9504, 2300 RA Leiden, The Netherlands
H.B. Brom
Affiliation:
Kamerlingh Onnes Laboratory, Leiden University, P.O. Box 9504, 2300 RA Leiden, The Netherlands
J.N. Huiberts
Affiliation:
Philips Research Laboratories, Prof. Holstlaan 4, 5656 AA Eindhoven, The Netherlands
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Abstract

From admittance spectroscopy measurements on poly(p-phenylene vinylene) based light-emitting diodes various relaxation processes can be observed. At low bias inductive contributions due to the transit of charge carriers dominate, at high bias capacitive contributions as a result of charge redistribution appears. These processes reveal a transition from space-charge limited to recombination limited behavior, as is also indicated by the current-voltage characteristics.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 665: Symposium C – Electronic, Optical and Optoelectronic Polymers and Oligomers , 2001 , C3.3
Copyright
Copyright © Materials Research Society 2001

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References

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