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White and Unsaturated Color Organic Light Emitting Diodes

Published online by Cambridge University Press:  10 February 2011

A. Dodabalapur
Affiliation:
AT&T Bell Laboratories, 600 Mountain Avenue, Murray Hill - NJ 07974.
M. Strukelj
Affiliation:
AT&T Bell Laboratories, 600 Mountain Avenue, Murray Hill - NJ 07974.
R. H. Jordan
Affiliation:
AT&T Bell Laboratories, 600 Mountain Avenue, Murray Hill - NJ 07974.
L. J. Rothberg
Affiliation:
AT&T Bell Laboratories, 600 Mountain Avenue, Murray Hill - NJ 07974.
T. M. Miller
Affiliation:
AT&T Bell Laboratories, 600 Mountain Avenue, Murray Hill - NJ 07974.
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Abstract

We describe the principles of operation and device characteristics of novel organic light emitting diodes in which the emission originates in a number of optically active layers. The effective emission color can be controlled by adjusting the thicknesses of the individual layers, and in this manner white and other unsaturated color LEDs with external quantum efficiency > 0.5% have been fabricated. The maximum luminance that has been achieved is ∼4,700 Cd/m2.

Type
Research Article
Copyright
Copyright © Materials Research Society 1996

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References

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