WHITE-LIGHT-EMITTING ORGANIC ELECTROLUMINESCENT DEVICE USING LANTHANIDE COMPLEXES

White-light-emitting organic electroluminescent devices with multilaye r structures were fabricated using lanthanide metal complexes as the e mitter layers. A device with a structure of glass substrate/indium-tin oxide/tetraphenyldiamine derivative (TPD)/terbium complex (tris(acety lacetonato) (monophenanthroline)Tb(III))/ europium complex (tris(diben zoylmethanato) (monophenanthroline)Eu(III))/aluminum complex (Alq)Mg:A g exhibited white electroluminescence. The spectrum consisted of three discrete peaks at 410-420 nm, 545 nm, and 615 nm, from TPD, Tb comple x, and Eu complex, respectively.