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Organic electroluminescent devices with improved stability

Applied Physics Letters · 1996 · Vol. 69(15) · pp. 2160–2162

Steven A. Van Slyke✉(Kodak (United States))C. H. Chen(Carestream (United States))Chak Wah Tang(Carestream (United States))

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Abstract

Highly stable organic electroluminescent devices based on vapor-deposited Alq thin films have been achieved. The improvement in stability is derived from several factors including: (1) a multilayer thin-film structure with a CuPc stabilized hole-injection contact, (2) a hole-transport diamine layer using a naphthyl-substituted benzidine derivative, and (3) an ac drive wave form. These emissive devices have shown an operational half-lifetime of about 4000 h from an initial luminance of 510 cd/m2.

Organic Light-Emitting Diodes Research Synthesis and properties of polymers GaN-based semiconductor devices and materialsElectroluminescenceMaterials scienceBenzidineThin filmOptoelectronicsLayer (electronics)OLEDOrganic semiconductorLuminanceDiamine

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