About cookies on this site Our websites require some cookies to function properly (required). In addition, other cookies may be used with your consent to analyze site usage, improve the user experience and for advertising. For more information, please review your options. By visiting our website, you agree to our processing of information as described in IBM’sprivacy statement. To provide a smooth navigation, your cookie preferences will be shared across the IBM web domains listed here.
Publication
EURODISPLAY 1997
Conference paper
Lithium-aluminum cathodes for organic light-emitting devices
Abstract
We have examined the performance characteristics of organic light-emitting devices prepared with multilayer Al-Li-Al cathodes in an ultrahigh vacuum molecular beam deposition system. The optimum device characteristics are obtained when one or two atomic layers of Al are deposited on the organic materials prior to Li deposition. Ab initio molecular dynamics calculations of the Li-Al interaction as well as the interaction of Li and Al with Alq3 clarify the role of Al in preventing Li diffusion into the organic films and the electro-optical behavior of the device as the thickness of the Al interfacial layer is changed.