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Publication
Applied Physics Letters
Paper
Lithium-aluminum contacts for organic light-emitting devices
Abstract
Organic light-emitting devices have been prepared with multilayer Al-Li-Al cathodes in an ultrahigh vacuum molecular beam deposition system. The optimum device characteristics are obtained when there is a single Al layer separating the Li layer from the organic materials. Ab initio molecular dynamics calculations of the Al-Li interaction clarify the role of Al as a blocking layer to Li diffusion into the organic films as well as the behavior of the device when the thickness of this Al interfacial layer is changed. © 1997 American Institute of Physics.