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Temperature and Field Dependence in Polymer Light Emitting Diodes

Published online by Cambridge University Press:  10 February 2011

L. D. Bozano ,
S.A. Carter ,
J.C. Scott ,
G.G. Malliaras  and
P.J. Brock
L. D. Bozano
Affiliation:
Physics Department, University of California, Santa Cruz, CA 95064
S.A. Carter
Affiliation:
Physics Department, University of California, Santa Cruz, CA 95064sacarter@cats.ucsc
J.C. Scott
Affiliation:
IBM Almaden Research Center, San Jose, CA 95120
G.G. Malliaras
Affiliation:
Department of Material Science and Engineering, Cornell University, Ithaca, NY 14853
P.J. Brock
Affiliation:
IBM Almaden Research Center, San Jose, CA 95120
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Abstract

We investigate the electrical properties of Polymer Light Emitting Diodes (LED's). The experimental data consists of steady state current-voltage characteristics and radiance as a function of temperature.

The basic LED structure is Anode/MEH-PPV (2-methoxy,5-(2'-ethyl-hexyloxy)-l,4-phenylene vinylene)/Cathode, with a polymer film 120-140 nm thick. We use different anode/cathode pairs to study transport and light emission properties. Measurements of external quantum efficiency of bipolar and monopolar devices are presented from 200 K to 300 K. The electron and hole mobilities are derived in the trap-free limit and at high voltages.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 558: Symposium B – Flat-Panel Displays and Sensors-Principles, Materials… , 1999 , 453
Copyright
Copyright © Materials Research Society 2000

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References

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