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White and Unsaturated Color Organic Light Emitting Diodes
Published online by Cambridge University Press: 10 February 2011
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.
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- Copyright © Materials Research Society 1996